add at32f435_437 first version

2026-02-08 20:05:29 +08:00 · 2022-04-08 15:31:35 +08:00
parent c2b8df673b
commit 0449ade73b
564 changed files with 288054 additions and 0 deletions
--- a/bsp/at32/at32f435-start/.config
+++ b/bsp/at32/at32f435-start/.config
@@ -0,0 +1,432 @@
+#
+# Automatically generated file; DO NOT EDIT.
+# RT-Thread Configuration
+#
+
+#
+# RT-Thread Kernel
+#
+CONFIG_RT_NAME_MAX=8
+# CONFIG_RT_USING_ARCH_DATA_TYPE is not set
+# CONFIG_RT_USING_SMP is not set
+CONFIG_RT_ALIGN_SIZE=4
+# CONFIG_RT_THREAD_PRIORITY_8 is not set
+CONFIG_RT_THREAD_PRIORITY_32=y
+# CONFIG_RT_THREAD_PRIORITY_256 is not set
+CONFIG_RT_THREAD_PRIORITY_MAX=32
+CONFIG_RT_TICK_PER_SECOND=1000
+CONFIG_RT_USING_OVERFLOW_CHECK=y
+CONFIG_RT_USING_HOOK=y
+CONFIG_RT_HOOK_USING_FUNC_PTR=y
+CONFIG_RT_USING_IDLE_HOOK=y
+CONFIG_RT_IDLE_HOOK_LIST_SIZE=4
+CONFIG_IDLE_THREAD_STACK_SIZE=256
+CONFIG_RT_USING_TIMER_SOFT=y
+CONFIG_RT_TIMER_THREAD_PRIO=4
+CONFIG_RT_TIMER_THREAD_STACK_SIZE=512
+
+#
+# kservice optimization
+#
+# CONFIG_RT_KSERVICE_USING_STDLIB is not set
+# CONFIG_RT_KSERVICE_USING_TINY_SIZE is not set
+# CONFIG_RT_USING_TINY_FFS is not set
+# CONFIG_RT_PRINTF_LONGLONG is not set
+CONFIG_RT_DEBUG=y
+CONFIG_RT_DEBUG_COLOR=y
+# CONFIG_RT_DEBUG_INIT_CONFIG is not set
+# CONFIG_RT_DEBUG_THREAD_CONFIG is not set
+# CONFIG_RT_DEBUG_SCHEDULER_CONFIG is not set
+# CONFIG_RT_DEBUG_IPC_CONFIG is not set
+# CONFIG_RT_DEBUG_TIMER_CONFIG is not set
+# CONFIG_RT_DEBUG_IRQ_CONFIG is not set
+# CONFIG_RT_DEBUG_MEM_CONFIG is not set
+# CONFIG_RT_DEBUG_SLAB_CONFIG is not set
+# CONFIG_RT_DEBUG_MEMHEAP_CONFIG is not set
+# CONFIG_RT_DEBUG_MODULE_CONFIG is not set
+
+#
+# Inter-Thread communication
+#
+CONFIG_RT_USING_SEMAPHORE=y
+CONFIG_RT_USING_MUTEX=y
+CONFIG_RT_USING_EVENT=y
+CONFIG_RT_USING_MAILBOX=y
+CONFIG_RT_USING_MESSAGEQUEUE=y
+# CONFIG_RT_USING_SIGNALS is not set
+
+#
+# Memory Management
+#
+CONFIG_RT_USING_MEMPOOL=y
+CONFIG_RT_USING_SMALL_MEM=y
+# CONFIG_RT_USING_SLAB is not set
+CONFIG_RT_USING_MEMHEAP=y
+CONFIG_RT_MEMHEAP_FAST_MODE=y
+# CONFIG_RT_MEMHEAP_BSET_MODE is not set
+# CONFIG_RT_USING_SMALL_MEM_AS_HEAP is not set
+CONFIG_RT_USING_MEMHEAP_AS_HEAP=y
+CONFIG_RT_USING_MEMHEAP_AUTO_BINDING=y
+# CONFIG_RT_USING_SLAB_AS_HEAP is not set
+# CONFIG_RT_USING_USERHEAP is not set
+# CONFIG_RT_USING_NOHEAP is not set
+# CONFIG_RT_USING_MEMTRACE is not set
+# CONFIG_RT_USING_HEAP_ISR is not set
+CONFIG_RT_USING_HEAP=y
+
+#
+# Kernel Device Object
+#
+CONFIG_RT_USING_DEVICE=y
+# CONFIG_RT_USING_DEVICE_OPS is not set
+# CONFIG_RT_USING_INTERRUPT_INFO is not set
+CONFIG_RT_USING_CONSOLE=y
+CONFIG_RT_CONSOLEBUF_SIZE=128
+CONFIG_RT_CONSOLE_DEVICE_NAME="uart1"
+CONFIG_RT_VER_NUM=0x40100
+CONFIG_ARCH_ARM=y
+CONFIG_RT_USING_CPU_FFS=y
+CONFIG_ARCH_ARM_CORTEX_M=y
+CONFIG_ARCH_ARM_CORTEX_M4=y
+# CONFIG_ARCH_CPU_STACK_GROWS_UPWARD is not set
+
+#
+# RT-Thread Components
+#
+CONFIG_RT_USING_COMPONENTS_INIT=y
+CONFIG_RT_USING_USER_MAIN=y
+CONFIG_RT_MAIN_THREAD_STACK_SIZE=2048
+CONFIG_RT_MAIN_THREAD_PRIORITY=10
+# CONFIG_RT_USING_LEGACY is not set
+
+#
+# C++ features
+#
+# CONFIG_RT_USING_CPLUSPLUS is not set
+
+#
+# Command shell
+#
+CONFIG_RT_USING_FINSH=y
+CONFIG_RT_USING_MSH=y
+CONFIG_FINSH_USING_MSH=y
+CONFIG_FINSH_THREAD_NAME="tshell"
+CONFIG_FINSH_THREAD_PRIORITY=20
+CONFIG_FINSH_THREAD_STACK_SIZE=4096
+CONFIG_FINSH_USING_HISTORY=y
+CONFIG_FINSH_HISTORY_LINES=5
+CONFIG_FINSH_USING_SYMTAB=y
+CONFIG_FINSH_CMD_SIZE=80
+CONFIG_MSH_USING_BUILT_IN_COMMANDS=y
+CONFIG_FINSH_USING_DESCRIPTION=y
+# CONFIG_FINSH_ECHO_DISABLE_DEFAULT is not set
+# CONFIG_FINSH_USING_AUTH is not set
+CONFIG_FINSH_ARG_MAX=10
+
+#
+# Device virtual file system
+#
+# CONFIG_RT_USING_DFS is not set
+
+#
+# Device Drivers
+#
+CONFIG_RT_USING_DEVICE_IPC=y
+# CONFIG_RT_USING_SYSTEM_WORKQUEUE is not set
+CONFIG_RT_USING_SERIAL=y
+CONFIG_RT_USING_SERIAL_V1=y
+# CONFIG_RT_USING_SERIAL_V2 is not set
+# CONFIG_RT_SERIAL_USING_DMA is not set
+CONFIG_RT_SERIAL_RB_BUFSZ=64
+# CONFIG_RT_USING_CAN is not set
+# CONFIG_RT_USING_HWTIMER is not set
+# CONFIG_RT_USING_CPUTIME is not set
+# CONFIG_RT_USING_I2C is not set
+# CONFIG_RT_USING_PHY is not set
+CONFIG_RT_USING_PIN=y
+# CONFIG_RT_USING_ADC is not set
+# CONFIG_RT_USING_DAC is not set
+# CONFIG_RT_USING_PWM is not set
+# CONFIG_RT_USING_MTD_NOR is not set
+# CONFIG_RT_USING_MTD_NAND is not set
+# CONFIG_RT_USING_PM is not set
+# CONFIG_RT_USING_RTC is not set
+# CONFIG_RT_USING_SDIO is not set
+# CONFIG_RT_USING_SPI is not set
+# CONFIG_RT_USING_WDT is not set
+# CONFIG_RT_USING_AUDIO is not set
+# CONFIG_RT_USING_SENSOR is not set
+# CONFIG_RT_USING_TOUCH is not set
+# CONFIG_RT_USING_HWCRYPTO is not set
+# CONFIG_RT_USING_PULSE_ENCODER is not set
+# CONFIG_RT_USING_INPUT_CAPTURE is not set
+# CONFIG_RT_USING_WIFI is not set
+
+#
+# Using USB
+#
+# CONFIG_RT_USING_USB is not set
+# CONFIG_RT_USING_USB_HOST is not set
+# CONFIG_RT_USING_USB_DEVICE is not set
+
+#
+# POSIX layer and C standard library
+#
+CONFIG_RT_LIBC_DEFAULT_TIMEZONE=8
+
+#
+# POSIX (Portable Operating System Interface) layer
+#
+# CONFIG_RT_USING_POSIX_FS is not set
+# CONFIG_RT_USING_POSIX_DELAY is not set
+# CONFIG_RT_USING_POSIX_CLOCK is not set
+# CONFIG_RT_USING_POSIX_TIMER is not set
+# CONFIG_RT_USING_PTHREADS is not set
+# CONFIG_RT_USING_MODULE is not set
+
+#
+# Interprocess Communication (IPC)
+#
+# CONFIG_RT_USING_POSIX_PIPE is not set
+# CONFIG_RT_USING_POSIX_MESSAGE_QUEUE is not set
+# CONFIG_RT_USING_POSIX_MESSAGE_SEMAPHORE is not set
+
+#
+# Socket is in the 'Network' category
+#
+
+#
+# Network
+#
+# CONFIG_RT_USING_SAL is not set
+# CONFIG_RT_USING_NETDEV is not set
+# CONFIG_RT_USING_LWIP is not set
+# CONFIG_RT_USING_AT is not set
+
+#
+# VBUS(Virtual Software BUS)
+#
+# CONFIG_RT_USING_VBUS is not set
+
+#
+# Utilities
+#
+# CONFIG_RT_USING_RYM is not set
+# CONFIG_RT_USING_ULOG is not set
+# CONFIG_RT_USING_UTEST is not set
+# CONFIG_RT_USING_VAR_EXPORT is not set
+# CONFIG_RT_USING_RT_LINK is not set
+# CONFIG_RT_USING_LWP is not set
+
+#
+# RT-Thread Utestcases
+#
+# CONFIG_RT_USING_UTESTCASES is not set
+
+#
+# RT-Thread online packages
+#
+
+#
+# IoT - internet of things
+#
+# CONFIG_PKG_USING_PAHOMQTT is not set
+# CONFIG_PKG_USING_WEBCLIENT is not set
+# CONFIG_PKG_USING_WEBNET is not set
+# CONFIG_PKG_USING_MONGOOSE is not set
+# CONFIG_PKG_USING_WEBTERMINAL is not set
+# CONFIG_PKG_USING_CJSON is not set
+# CONFIG_PKG_USING_JSMN is not set
+# CONFIG_PKG_USING_LIBMODBUS is not set
+# CONFIG_PKG_USING_FREEMODBUS is not set
+# CONFIG_PKG_USING_LJSON is not set
+# CONFIG_PKG_USING_EZXML is not set
+# CONFIG_PKG_USING_NANOPB is not set
+
+#
+# Wi-Fi
+#
+
+#
+# Marvell WiFi
+#
+# CONFIG_PKG_USING_WLANMARVELL is not set
+
+#
+# Wiced WiFi
+#
+# CONFIG_PKG_USING_WLAN_WICED is not set
+# CONFIG_PKG_USING_RW007 is not set
+# CONFIG_PKG_USING_COAP is not set
+# CONFIG_PKG_USING_NOPOLL is not set
+# CONFIG_PKG_USING_NETUTILS is not set
+# CONFIG_PKG_USING_AT_DEVICE is not set
+# CONFIG_PKG_USING_ATSRV_SOCKET is not set
+# CONFIG_PKG_USING_WIZNET is not set
+
+#
+# IoT Cloud
+#
+# CONFIG_PKG_USING_ONENET is not set
+# CONFIG_PKG_USING_GAGENT_CLOUD is not set
+# CONFIG_PKG_USING_ALI_IOTKIT is not set
+# CONFIG_PKG_USING_AZURE is not set
+# CONFIG_PKG_USING_TENCENT_IOTHUB is not set
+# CONFIG_PKG_USING_NIMBLE is not set
+# CONFIG_PKG_USING_OTA_DOWNLOADER is not set
+# CONFIG_PKG_USING_IPMSG is not set
+# CONFIG_PKG_USING_LSSDP is not set
+# CONFIG_PKG_USING_AIRKISS_OPEN is not set
+# CONFIG_PKG_USING_LIBRWS is not set
+# CONFIG_PKG_USING_TCPSERVER is not set
+# CONFIG_PKG_USING_PROTOBUF_C is not set
+# CONFIG_PKG_USING_ONNX_PARSER is not set
+# CONFIG_PKG_USING_ONNX_BACKEND is not set
+
+#
+# security packages
+#
+# CONFIG_PKG_USING_MBEDTLS is not set
+# CONFIG_PKG_USING_libsodium is not set
+# CONFIG_PKG_USING_TINYCRYPT is not set
+
+#
+# language packages
+#
+# CONFIG_PKG_USING_LUA is not set
+# CONFIG_PKG_USING_JERRYSCRIPT is not set
+# CONFIG_PKG_USING_MICROPYTHON is not set
+
+#
+# multimedia packages
+#
+# CONFIG_PKG_USING_OPENMV is not set
+# CONFIG_PKG_USING_MUPDF is not set
+# CONFIG_PKG_USING_STEMWIN is not set
+# CONFIG_PKG_USING_WAVPLAYER is not set
+# CONFIG_PKG_USING_TJPGD is not set
+
+#
+# tools packages
+#
+# CONFIG_PKG_USING_CMBACKTRACE is not set
+# CONFIG_PKG_USING_EASYFLASH is not set
+# CONFIG_PKG_USING_EASYLOGGER is not set
+# CONFIG_PKG_USING_SYSTEMVIEW is not set
+# CONFIG_PKG_USING_RDB is not set
+# CONFIG_PKG_USING_QRCODE is not set
+# CONFIG_PKG_USING_ULOG_EASYFLASH is not set
+# CONFIG_PKG_USING_ADBD is not set
+
+#
+# system packages
+#
+# CONFIG_PKG_USING_GUIENGINE is not set
+# CONFIG_PKG_USING_PERSIMMON is not set
+# CONFIG_PKG_USING_CAIRO is not set
+# CONFIG_PKG_USING_PIXMAN is not set
+# CONFIG_PKG_USING_LWEXT4 is not set
+# CONFIG_PKG_USING_PARTITION is not set
+# CONFIG_PKG_USING_FAL is not set
+# CONFIG_PKG_USING_SQLITE is not set
+# CONFIG_PKG_USING_RTI is not set
+# CONFIG_PKG_USING_LITTLEVGL2RTT is not set
+# CONFIG_PKG_USING_CMSIS is not set
+# CONFIG_PKG_USING_DFS_YAFFS is not set
+# CONFIG_PKG_USING_LITTLEFS is not set
+# CONFIG_PKG_USING_THREAD_POOL is not set
+# CONFIG_PKG_USING_ROBOTS is not set
+
+#
+# peripheral libraries and drivers
+#
+# CONFIG_PKG_USING_SENSORS_DRIVERS is not set
+# CONFIG_PKG_USING_REALTEK_AMEBA is not set
+# CONFIG_PKG_USING_SHT2X is not set
+# CONFIG_PKG_USING_STM32_SDIO is not set
+# CONFIG_PKG_USING_ICM20608 is not set
+# CONFIG_PKG_USING_U8G2 is not set
+# CONFIG_PKG_USING_BUTTON is not set
+# CONFIG_PKG_USING_PCF8574 is not set
+# CONFIG_PKG_USING_SX12XX is not set
+# CONFIG_PKG_USING_SIGNAL_LED is not set
+# CONFIG_PKG_USING_LEDBLINK is not set
+# CONFIG_PKG_USING_WM_LIBRARIES is not set
+# CONFIG_PKG_USING_KENDRYTE_SDK is not set
+# CONFIG_PKG_USING_INFRARED is not set
+# CONFIG_PKG_USING_ROSSERIAL is not set
+# CONFIG_PKG_USING_AT24CXX is not set
+# CONFIG_PKG_USING_MOTIONDRIVER2RTT is not set
+# CONFIG_PKG_USING_AD7746 is not set
+# CONFIG_PKG_USING_PCA9685 is not set
+# CONFIG_PKG_USING_I2C_TOOLS is not set
+# CONFIG_PKG_USING_NRF24L01 is not set
+# CONFIG_PKG_USING_TOUCH_DRIVERS is not set
+# CONFIG_PKG_USING_LCD_DRIVERS is not set
+# CONFIG_PKG_USING_MAX17048 is not set
+
+#
+# miscellaneous packages
+#
+# CONFIG_PKG_USING_LIBCSV is not set
+# CONFIG_PKG_USING_OPTPARSE is not set
+# CONFIG_PKG_USING_FASTLZ is not set
+# CONFIG_PKG_USING_MINILZO is not set
+# CONFIG_PKG_USING_QUICKLZ is not set
+# CONFIG_PKG_USING_MULTIBUTTON is not set
+# CONFIG_PKG_USING_FLEXIBLE_BUTTON is not set
+# CONFIG_PKG_USING_CANFESTIVAL is not set
+# CONFIG_PKG_USING_ZLIB is not set
+# CONFIG_PKG_USING_DSTR is not set
+# CONFIG_PKG_USING_TINYFRAME is not set
+# CONFIG_PKG_USING_KENDRYTE_DEMO is not set
+# CONFIG_PKG_USING_DIGITALCTRL is not set
+# CONFIG_PKG_USING_UPACKER is not set
+# CONFIG_PKG_USING_UPARAM is not set
+
+#
+# samples: kernel and components samples
+#
+# CONFIG_PKG_USING_KERNEL_SAMPLES is not set
+# CONFIG_PKG_USING_FILESYSTEM_SAMPLES is not set
+# CONFIG_PKG_USING_NETWORK_SAMPLES is not set
+# CONFIG_PKG_USING_PERIPHERAL_SAMPLES is not set
+# CONFIG_PKG_USING_HELLO is not set
+# CONFIG_PKG_USING_VI is not set
+# CONFIG_PKG_USING_NNOM is not set
+# CONFIG_PKG_USING_LIBANN is not set
+# CONFIG_PKG_USING_ELAPACK is not set
+# CONFIG_PKG_USING_ARMv7M_DWT is not set
+# CONFIG_PKG_USING_VT100 is not set
+CONFIG_SOC_FAMILY_AT32=y
+CONFIG_SOC_SERIES_AT32F435=y
+
+#
+# Hardware Drivers Config
+#
+CONFIG_SOC_AT32F435ZMT7=y
+
+#
+# Onboard Peripheral Drivers
+#
+CONFIG_BSP_USING_SERIAL=y
+
+#
+# On-chip Peripheral Drivers
+#
+# CONFIG_BSP_USING_SDRAM is not set
+CONFIG_BSP_USING_GPIO=y
+# CONFIG_BSP_USING_ON_CHIP_FLASH is not set
+# CONFIG_BSP_USING_QSPI is not set
+# CONFIG_BSP_USING_RTC is not set
+CONFIG_BSP_USING_UART=y
+CONFIG_BSP_USING_UART1=y
+CONFIG_BSP_USING_UART2=y
+CONFIG_BSP_USING_UART3=y
+# CONFIG_BSP_USING_PWM is not set
+# CONFIG_BSP_USING_HWTIMER is not set
+# CONFIG_BSP_USING_SPI is not set
+# CONFIG_BSP_USING_I2C is not set
+# CONFIG_BSP_USING_ADC is not set
+# CONFIG_BSP_USING_CAN is not set
+# CONFIG_BSP_USING_SDIO is not set
--- a/bsp/at32/at32f435-start/Kconfig
+++ b/bsp/at32/at32f435-start/Kconfig
@@ -0,0 +1,21 @@
+mainmenu "RT-Thread Configuration"
+
+config BSP_DIR
+    string
+    option env="BSP_ROOT"
+    default "."
+
+config RTT_DIR
+    string
+    option env="RTT_ROOT"
+    default "../../.."
+
+config PKGS_DIR
+    string
+    option env="PKGS_ROOT"
+    default "packages"
+
+source "$RTT_DIR/Kconfig"
+source "$PKGS_DIR/Kconfig"
+source "../libraries/Kconfig"
+source "board/Kconfig"
--- a/bsp/at32/at32f435-start/README.md
+++ b/bsp/at32/at32f435-start/README.md
@@ -0,0 +1,152 @@
+# AT32F435 AT-START 开发板 BSP 说明
+
+## 简介
+
+AT32F435 AT-START是雅特力推出的一款AT32F435系列的评估板，其搭载的MCU主要资源参数如下：
+
+| 硬件      | 描述           |
+| --------- | ---------------|
+| 芯片型号  | AT32F435ZMT7   |
+| CPU       | ARM Cortex M4  |
+| 主频      | 288M           |
+| 片内SRAM  | 384K可扩展512K |
+| 片内FLASH | 4032K          |
+
+## 编译说明
+
+AT32F437-START板级包支持MDK4﹑MDK5﹑IAR开发环境和GCC编译器，以下是具体版本信息：
+
+| IDE/编译器 | 已测试版本                   |
+| ---------- | ---------------------------- |
+| MDK4       | MDK4.74                      |
+| MDK5       | MDK531                       |
+| IAR        | IAR8.20                      |
+| GCC        | GCC 5.4.1 20160919 (release) |
+
+## 板载资源
+
+- MCU：AT32F435ZMT7，主频 288MHz，4032K FLASH ，384K可扩展到512K RAM
+- 常用外设
+  - LED：3个，（红色PD13、白色PD14、绿色PD15）
+  - 按键：1个，KEY_USER（兼具唤醒功能，PA0)
+- 常用接口：插针串口J8
+- 调试接口，JLINK、板载的 AT-LINK SWD 下载
+
+## 外设支持
+
+本 BSP 目前对外设驱动的支持情况如下：
+
+| 驱动      | 支持情况 |            备注            |
+| --------- | -------- | :------------------------: |
+| UART      | 支持     | USART1/2/3                 |
+| GPIO      | 支持     | PA0...PH7                  |
+| IIC       | 支持     | GPIO模拟I2C                |
+| SPI       | 支持     | SPI1/2                     |
+| ADC       | 支持     | ADC1/2                     |
+| PWM       | 支持     | TMR1/2                     |
+| HWTIMER   | 支持     | TMR3/4/5                   |
+| SDIO      | 支持     | SDIO1                      |
+| CAN       | 支持     | CAN1/2                     |
+| QSPI      | 支持     | QSPI1/2                    |
+| WDT       | 支持     |                            |
+| RTC       | 支持     |                            |
+| FLASH     | 支持     |                            |
+| SDRAM     | 支持     |                            |
+
+### IO在板级支持包中的映射情况
+
+| IO号 |   板级包中的定义  |
+| ---- | ----------------- |
+| PD13 | LED2              |
+| PD14 | LED3              |
+| PD15 | LED4              |
+| PA9  | USART1_TX         |
+| PA10 | USART1_RX         |
+| PA2  | USART2_TX         |
+| PA3  | USART2_RX         |
+| PB10 | USART3_TX         |
+| PB11 | USART3_RX         |
+| PA4  | SPI1_NSS          |
+| PA5  | SPI1_SCK          |
+| PA6  | SPI1_MISO         |
+| PA7  | SPI1_MOSI         |
+| PB12 | SPI2_NSS          |
+| PB13 | SPI2_SCK          |
+| PB14 | SPI2_MISO         |
+| PB15 | SPI2_MOSI         |
+| PB6  | I2C1_SCL          |
+| PB7  | I2C1_SDA          |
+| PC8  | SDIO1_D0          |
+| PC9  | SDIO1_D1          |
+| PC10 | SDIO1_D2          |
+| PC11 | SDIO1_D3          |
+| PC12 | SDIO1_CK          |
+| PD2  | SDIO1_CMD         |
+| PA8  | PWM_TMR1_CH1      |
+| PA11 | PWM_TMR1_CH4      |
+| PA0  | PWM_TMR2_CH1      |
+| PA1  | PWM_TMR2_CH2      |
+| PC0  | ADC1/2_IN10       |
+| PC1  | ADC1/2_IN11       |
+| PC2  | ADC1/2_IN12       |
+| PC3  | ADC1/2_IN13       |
+| PC4  | ADC1/2_IN14       |
+| PC5  | ADC1/2_IN15       |
+| PB8  | CAN1_RX           |
+| PB9  | CAN1_TX           |
+| PB5  | CAN2_RX           |
+| PB6  | CAN2_TX           |
+| PF8  | QSPI1_IO0         |
+| PF9  | QSPI1_IO1         |
+| PF7  | QSPI1_IO2         |
+| PF6  | QSPI1_IO3         |
+| PF10 | QSPI1_SCK         |
+| PG6  | QSPI1_CS          |
+| PE7  | QSPI2_IO0         |
+| PE8  | QSPI2_IO1         |
+| PE9  | QSPI2_IO2         |
+| PE10 | QSPI2_IO3         |
+| PG13 | QSPI2_SCK         |
+| PG8  | QSPI2_CS          |
+
+## 使用说明
+
+    本章节是为刚接触 RT-Thread 的新手准备的使用说明，遵循简单的步骤即可将 RT-Thread 操作系统运行在该开发板上，看到实验效果 。
+
+### 快速上手
+
+本 BSP 为开发者提供 MDK4、MDK5 和 IAR 工程，并且支持 GCC 开发环境。下面以 MDK5 开发环境为例，介绍如何将系统运行起来。
+
+#### 硬件连接
+
+使用数据线连接开发板到 PC，打开电源开关。
+
+#### 编译下载
+
+双击 project.uvprojx 文件，打开 MDK5 工程，编译并下载程序到开发板。
+
+> 工程默认配置使用AT-LINK SWD下载程序，在通过AT-LINK SWD连接开发板的基础上，点击下载按钮即可下载程序到开发板
+
+#### 运行结果
+
+下载程序成功之后，系统会自动运行，观察开发板上 LED 的运行效果，LED2/3/4 会周期性闪烁。
+
+连接开发板对应串口到 PC , 在终端工具里打开相应的串口（115200-8-1-N），复位设备后，在串口上可以看到 RT-Thread 的输出信息:
+
+```bash
+ \ | /
+- RT -     Thread Operating System
+ / | \     4.1.0 build Apr  7 2022
+ 2006 - 2022 Copyright by RT-Thread team
+msh />
+```
+
+## 注意事项
+
+可在雅特力官方网站进行所需资料下载，如Keil_v5/Keil_v4/IAR等pack安装包和AT-START开发板原理图等（www.arterytek.com）
+
+## 联系人信息
+
+维护人:
+
+- [sheltonyu]
--- a/bsp/at32/at32f435-start/SConscript
+++ b/bsp/at32/at32f435-start/SConscript
@@ -0,0 +1,14 @@
+# for module compiling
+import os
+Import('RTT_ROOT')
+
+cwd = str(Dir('#'))
+objs = []
+list = os.listdir(cwd)
+
+for d in list:
+    path = os.path.join(cwd, d)
+    if os.path.isfile(os.path.join(path, 'SConscript')):
+        objs = objs + SConscript(os.path.join(d, 'SConscript'))
+
+Return('objs')
--- a/bsp/at32/at32f435-start/SConstruct
+++ b/bsp/at32/at32f435-start/SConstruct
@@ -0,0 +1,56 @@
+import os
+import sys
+import rtconfig
+
+if os.getenv('RTT_ROOT'):
+    RTT_ROOT = os.getenv('RTT_ROOT')
+else:
+    RTT_ROOT = os.path.normpath(os.getcwd() + '/../../..')
+
+sys.path = sys.path + [os.path.join(RTT_ROOT, 'tools')]
+try:
+    from building import *
+except:
+    print('Cannot found RT-Thread root directory, please check RTT_ROOT')
+    print(RTT_ROOT)
+    exit(-1)
+
+TARGET = 'rtthread.' + rtconfig.TARGET_EXT
+
+DefaultEnvironment(tools=[])
+env = Environment(tools = ['mingw'],
+    AS = rtconfig.AS, ASFLAGS = rtconfig.AFLAGS,
+    CC = rtconfig.CC, CFLAGS = rtconfig.CFLAGS,
+    AR = rtconfig.AR, ARFLAGS = '-rc',
+    LINK = rtconfig.LINK, LINKFLAGS = rtconfig.LFLAGS)
+env.PrependENVPath('PATH', rtconfig.EXEC_PATH)
+
+if rtconfig.PLATFORM == 'iar':
+    env.Replace(CCCOM = ['$CC $CFLAGS $CPPFLAGS $_CPPDEFFLAGS $_CPPINCFLAGS -o $TARGET $SOURCES'])
+    env.Replace(ARFLAGS = [''])
+    env.Replace(LINKCOM = env["LINKCOM"] + ' --map project.map')
+
+Export('RTT_ROOT')
+Export('rtconfig')
+
+SDK_ROOT = os.path.abspath('./')
+
+if os.path.exists(SDK_ROOT + '/libraries'):
+    libraries_path_prefix = SDK_ROOT + '/libraries'
+else:
+    libraries_path_prefix = os.path.dirname(SDK_ROOT) + '/libraries'
+
+SDK_LIB = libraries_path_prefix
+Export('SDK_LIB')
+
+# prepare building environment
+objs = PrepareBuilding(env, RTT_ROOT, has_libcpu=False)
+
+at32_library = 'f435_437'
+rtconfig.BSP_LIBRARY_TYPE = at32_library
+
+# include libraries
+objs.extend(SConscript(os.path.join(libraries_path_prefix, at32_library, 'SConscript')))
+
+# make a building
+DoBuilding(TARGET, objs)
--- a/bsp/at32/at32f435-start/applications/SConscript
+++ b/bsp/at32/at32f435-start/applications/SConscript
@@ -0,0 +1,17 @@
+# RT-Thread building script for component
+Import('RTT_ROOT')
+Import('rtconfig')
+from building import *
+
+cwd = GetCurrentDir()
+
+# add the general drivers.
+src = Split("""
+main.c
+""")
+
+CPPPATH = [cwd, str(Dir('#'))]
+
+group = DefineGroup('Applications', src, depend = [''], CPPPATH = CPPPATH)
+
+Return('group')
--- a/bsp/at32/at32f435-start/applications/main.c
+++ b/bsp/at32/at32f435-start/applications/main.c
@@ -0,0 +1,48 @@
+/*
+ * Copyright (c) 2006-2021, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2022-03-28     shelton      first version
+ */
+
+#include <rtthread.h>
+#include <rtdevice.h>
+#include "board.h"
+#include "drv_gpio.h"
+
+/* defined the led2 pin: pd13 */
+#define LED2_PIN    GET_PIN(D, 13)
+/* defined the led3 pin: pd14 */
+#define LED3_PIN    GET_PIN(D, 14)
+/* defined the led4 pin: pd15 */
+#define LED4_PIN    GET_PIN(D, 15)
+
+int main(void)
+{
+    rt_uint32_t speed = 200;
+    /* set led2 pin mode to output */
+    rt_pin_mode(LED2_PIN, PIN_MODE_OUTPUT);
+    /* set led3 pin mode to output */
+    rt_pin_mode(LED3_PIN, PIN_MODE_OUTPUT);
+    /* set led4 pin mode to output */
+    rt_pin_mode(LED4_PIN, PIN_MODE_OUTPUT);
+
+    while (1)
+    {
+        rt_pin_write(LED2_PIN, PIN_LOW);
+        rt_thread_mdelay(speed);
+        rt_pin_write(LED3_PIN, PIN_LOW);
+        rt_thread_mdelay(speed);
+        rt_pin_write(LED4_PIN, PIN_LOW);
+        rt_thread_mdelay(speed);
+        rt_pin_write(LED2_PIN, PIN_HIGH);
+        rt_thread_mdelay(speed);
+        rt_pin_write(LED3_PIN, PIN_HIGH);
+        rt_thread_mdelay(speed);
+        rt_pin_write(LED4_PIN, PIN_HIGH);
+        rt_thread_mdelay(speed);
+    }
+}
--- a/bsp/at32/at32f435-start/board/Kconfig
+++ b/bsp/at32/at32f435-start/board/Kconfig
@@ -0,0 +1,228 @@
+menu "Hardware Drivers Config"
+
+config SOC_AT32F435ZMT7
+    bool
+    select SOC_SERIES_AT32F435
+    select RT_USING_COMPONENTS_INIT
+    select RT_USING_USER_MAIN
+    default y
+
+menu "Onboard Peripheral Drivers"
+
+    config BSP_USING_SERIAL
+        bool "Enable USART (uart1)"
+        select BSP_USING_UART
+        select BSP_USING_UART1
+        default y
+
+endmenu
+
+menu "On-chip Peripheral Drivers"
+
+    config BSP_USING_SDRAM
+        bool "Enable SDRAM"
+        default n
+
+    config BSP_USING_GPIO
+        bool "Enable GPIO"
+        select RT_USING_PIN
+        default y
+
+    config BSP_USING_ON_CHIP_FLASH
+        bool "Enable on-chip FLASH"
+        default n 
+
+    menuconfig BSP_USING_QSPI
+        bool "Enable QSPI BUS"
+        default n
+        select RT_USING_QSPI
+        select RT_USING_SPI
+        if BSP_USING_QSPI
+            config BSP_USING_QSPI1
+                bool "Enable QSPI1"
+                default n
+
+            config BSP_USING_QSPI2
+                bool "Enable QSPI2"
+                default n
+        endif
+
+    menuconfig BSP_USING_RTC
+        bool "Enable RTC"
+        select RT_USING_RTC
+        default n
+        if BSP_USING_RTC
+            choice
+                prompt "Select clock source"
+                default BSP_RTC_USING_LEXT
+
+                config BSP_RTC_USING_LEXT
+                    bool "RTC USING LEXT"
+
+                config BSP_RTC_USING_LICK
+                    bool "RTC USING LICK"
+            endchoice
+        endif
+
+    menuconfig BSP_USING_UART
+        bool "Enable UART"
+        default y
+        select RT_USING_SERIAL
+        if BSP_USING_UART
+            config BSP_USING_UART1
+                bool "Enable UART1"
+                default y
+
+            config BSP_USING_UART2
+                bool "Enable UART2"
+                default n
+
+            config BSP_USING_UART3
+                bool "Enable UART3"
+                default n
+        endif
+
+    menuconfig BSP_USING_PWM
+        bool "Enable PWM"
+        default n
+        select RT_USING_PWM
+        if BSP_USING_PWM
+        menuconfig BSP_USING_PWM1
+            bool "Enable timer1 output pwm"
+            default n
+            if BSP_USING_PWM1
+                config BSP_USING_PWM1_CH1
+                    bool "Enable PWM1 channel1"
+                    default n
+
+                config BSP_USING_PWM1_CH4
+                    bool "Enable PWM1 channel4"
+                    default n
+            endif
+        menuconfig BSP_USING_PWM2
+            bool "Enable timer2 output pwm"
+            default n
+            if BSP_USING_PWM2
+                config BSP_USING_PWM2_CH1
+                    bool "Enable PWM2 channel1"
+                    default n
+
+                config BSP_USING_PWM2_CH2
+                    bool "Enable PWM2 channel2"
+                    default n
+            endif
+        endif
+
+    menuconfig BSP_USING_HWTIMER
+        bool "Enable HWTIMER"
+        default n
+        select RT_USING_HWTIMER
+        if BSP_USING_HWTIMER
+        config BSP_USING_HWTMR3
+            bool "Enable hardware timer3"
+            default n
+        config BSP_USING_HWTMR4
+            bool "Enable hardware timer4"
+            default n
+        config BSP_USING_HWTMR5
+            bool "Enable hardware timer5"
+            default n
+        endif
+
+    menuconfig BSP_USING_SPI
+        bool "Enable SPI BUS"
+        default n
+        select RT_USING_SPI
+        if BSP_USING_SPI
+            config BSP_USING_SPI1
+                bool "Enable SPI1 BUS"
+                default n
+
+            config BSP_USING_SPI2
+                bool "Enable SPI2 BUS"
+                default n
+        endif
+
+    menuconfig BSP_USING_I2C
+        bool "Enable I2C BUS (software simulation)"
+        default n
+        select RT_USING_I2C
+        select RT_USING_I2C_BITOPS
+        select RT_USING_PIN
+        if BSP_USING_I2C
+            config BSP_USING_I2C1
+                bool "Enable I2C1 BUS"
+                if BSP_USING_I2C1
+                    config BSP_I2C1_SCL_PIN
+                        int "i2c1 scl pin number"
+                        range 0 63
+                        default 22
+                    config BSP_I2C1_SDA_PIN
+                        int "I2C1 sda pin number"
+                        range 0 63
+                        default 23
+                endif
+            config BSP_USING_I2C2
+                bool "Enable I2C2 BUS"
+                if BSP_USING_I2C2
+                    config BSP_I2C2_SCL_PIN
+                        int "i2c2 scl pin number"
+                        range 0 63
+                        default 26
+                    config BSP_I2C2_SDA_PIN
+                        int "I2C2 sda pin number"
+                        range 0 63
+                        default 27
+                endif
+            config BSP_USING_I2C3
+                bool "Enable I2C3 BUS"
+                if BSP_USING_I2C3
+                    config BSP_I2C3_SCL_PIN
+                        int "i2c3 scl pin number"
+                        range 0 63
+                        default 8
+                    config BSP_I2C3_SDA_PIN
+                        int "I2C3 sda pin number"
+                        range 0 63
+                        default 41
+                endif
+        endif
+
+    menuconfig BSP_USING_ADC
+        bool "Enable ADC"
+        default n
+        select RT_USING_ADC
+        if BSP_USING_ADC
+            config BSP_USING_ADC1
+                bool "Enable ADC1"
+                default n
+            config BSP_USING_ADC2
+                bool "Enable ADC2"
+                default n
+        endif
+
+    menuconfig BSP_USING_CAN
+        bool "Enable CAN"
+        default n
+        select RT_USING_CAN
+        if BSP_USING_CAN
+            config BSP_USING_CAN1
+                bool "using CAN1"
+                default n
+            config BSP_USING_CAN2
+                bool "using CAN2"
+                default n
+        endif
+
+    menuconfig BSP_USING_SDIO
+        bool "Enable SDIO"
+        default n
+        select RT_USING_SDIO
+        if BSP_USING_SDIO
+            config BSP_USING_SDIO1
+                bool "Enable SDIO1"
+                default n
+        endif
+endmenu
+
+endmenu
--- a/bsp/at32/at32f435-start/board/SConscript
+++ b/bsp/at32/at32f435-start/board/SConscript
@@ -0,0 +1,29 @@
+import os
+import rtconfig
+from building import *
+
+Import('SDK_LIB')
+
+cwd = GetCurrentDir()
+
+# add general drivers
+src = Split('''
+src/board.c
+src/at32_msp.c
+''')
+
+path = [cwd]
+path += [cwd + '/inc']
+
+startup_path_prefix = SDK_LIB
+
+if rtconfig.CROSS_TOOL == 'gcc':
+    src += [startup_path_prefix + '/f435_437/firmware/cmsis/cm4/device_support/startup/gcc/startup_at32f435_437.s']
+elif rtconfig.CROSS_TOOL == 'keil':
+    src += [startup_path_prefix + '/f435_437/firmware/cmsis/cm4/device_support/startup/mdk/startup_at32f435_437.s']
+elif rtconfig.CROSS_TOOL == 'iar':
+    src += [startup_path_prefix + '/f435_437/firmware/cmsis/cm4/device_support/startup/iar/startup_at32f435_437.s']
+    
+CPPDEFINES = ['AT32F435ZMT7']
+group = DefineGroup('Drivers', src, depend = [''], CPPPATH = path, CPPDEFINES = CPPDEFINES)
+Return('group')
--- a/bsp/at32/at32f435-start/board/inc/at32_msp.h
+++ b/bsp/at32/at32f435-start/board/inc/at32_msp.h
@@ -0,0 +1,25 @@
+/*
+ * Copyright (c) 2006-2018, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2022-03-31     shelton      first version
+ */
+
+#ifndef __AT32_MSP_H__
+#define __AT32_MSP_H__
+
+void at32_msp_usart_init(void *instance);
+void at32_msp_spi_init(void *instance);
+void at32_msp_tmr_init(void *instance);
+void at32_msp_i2c_init(void *instance);
+void at32_msp_sdio_init(void *instance);
+void at32_msp_adc_init(void *instance);
+void at32_msp_hwtmr_init(void *instance);
+void at32_msp_can_init(void *instance);
+void at32_msp_qspi_init(void *instance);
+void at32_msp_sdram_init(void *instance);
+
+#endif /* __AT32_MSP_H__ */
--- a/bsp/at32/at32f435-start/board/inc/at32f435_437_conf.h
+++ b/bsp/at32/at32f435-start/board/inc/at32f435_437_conf.h
@@ -0,0 +1,174 @@
+/**
+  **************************************************************************
+  * @file     at32f435_437_conf.h
+  * @version  v2.0.6
+  * @date     2022-03-11
+  * @brief    at32f435_437 config header file
+  **************************************************************************
+  *                       Copyright notice & Disclaimer
+  *
+  * The software Board Support Package (BSP) that is made available to
+  * download from Artery official website is the copyrighted work of Artery.
+  * Artery authorizes customers to use, copy, and distribute the BSP
+  * software and its related documentation for the purpose of design and
+  * development in conjunction with Artery microcontrollers. Use of the
+  * software is governed by this copyright notice and the following disclaimer.
+  *
+  * THIS SOFTWARE IS PROVIDED ON "AS IS" BASIS WITHOUT WARRANTIES,
+  * GUARANTEES OR REPRESENTATIONS OF ANY KIND. ARTERY EXPRESSLY DISCLAIMS,
+  * TO THE FULLEST EXTENT PERMITTED BY LAW, ALL EXPRESS, IMPLIED OR
+  * STATUTORY OR OTHER WARRANTIES, GUARANTEES OR REPRESENTATIONS,
+  * INCLUDING BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY,
+  * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT.
+  *
+  **************************************************************************
+  */
+
+/* define to prevent recursive inclusion -------------------------------------*/
+#ifndef __AT32F435_437_CONF_H
+#define __AT32F435_437_CONF_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+  * @brief in the following line adjust the value of high speed exernal crystal (hext)
+  * used in your application
+  *
+  * tip: to avoid modifying this file each time you need to use different hext, you
+  *      can define the hext value in your toolchain compiler preprocessor.
+  *
+  */
+#if !defined  HEXT_VALUE
+#define HEXT_VALUE                       ((uint32_t)8000000) /*!< value of the high speed exernal crystal in hz */
+#endif
+
+/**
+  * @brief in the following line adjust the high speed exernal crystal (hext) startup
+  * timeout value
+  */
+#define HEXT_STARTUP_TIMEOUT             ((uint16_t)0x3000) /*!< time out for hext start up */
+#define HICK_VALUE                       ((uint32_t)8000000) /*!< value of the high speed internal clock in hz */
+
+/* module define -------------------------------------------------------------*/
+#define CRM_MODULE_ENABLED
+#define TMR_MODULE_ENABLED
+#define ERTC_MODULE_ENABLED
+#define GPIO_MODULE_ENABLED
+#define I2C_MODULE_ENABLED
+#define USART_MODULE_ENABLED
+#define PWC_MODULE_ENABLED
+#define CAN_MODULE_ENABLED
+#define ADC_MODULE_ENABLED
+#define DAC_MODULE_ENABLED
+#define SPI_MODULE_ENABLED
+#define EDMA_MODULE_ENABLED
+#define DMA_MODULE_ENABLED
+#define DEBUG_MODULE_ENABLED
+#define FLASH_MODULE_ENABLED
+#define CRC_MODULE_ENABLED
+#define WWDT_MODULE_ENABLED
+#define WDT_MODULE_ENABLED
+#define EXINT_MODULE_ENABLED
+#define SDIO_MODULE_ENABLED
+#define XMC_MODULE_ENABLED
+#define USB_MODULE_ENABLED
+#define ACC_MODULE_ENABLED
+#define MISC_MODULE_ENABLED
+#define QSPI_MODULE_ENABLED
+#define DVP_MODULE_ENABLED
+#define SCFG_MODULE_ENABLED
+#define EMAC_MODULE_ENABLED
+
+/* includes ------------------------------------------------------------------*/
+#ifdef CRM_MODULE_ENABLED
+#include "at32f435_437_crm.h"
+#endif
+#ifdef TMR_MODULE_ENABLED
+#include "at32f435_437_tmr.h"
+#endif
+#ifdef ERTC_MODULE_ENABLED
+#include "at32f435_437_ertc.h"
+#endif
+#ifdef GPIO_MODULE_ENABLED
+#include "at32f435_437_gpio.h"
+#endif
+#ifdef I2C_MODULE_ENABLED
+#include "at32f435_437_i2c.h"
+#endif
+#ifdef USART_MODULE_ENABLED
+#include "at32f435_437_usart.h"
+#endif
+#ifdef PWC_MODULE_ENABLED
+#include "at32f435_437_pwc.h"
+#endif
+#ifdef CAN_MODULE_ENABLED
+#include "at32f435_437_can.h"
+#endif
+#ifdef ADC_MODULE_ENABLED
+#include "at32f435_437_adc.h"
+#endif
+#ifdef DAC_MODULE_ENABLED
+#include "at32f435_437_dac.h"
+#endif
+#ifdef SPI_MODULE_ENABLED
+#include "at32f435_437_spi.h"
+#endif
+#ifdef DMA_MODULE_ENABLED
+#include "at32f435_437_dma.h"
+#endif
+#ifdef DEBUG_MODULE_ENABLED
+#include "at32f435_437_debug.h"
+#endif
+#ifdef FLASH_MODULE_ENABLED
+#include "at32f435_437_flash.h"
+#endif
+#ifdef CRC_MODULE_ENABLED
+#include "at32f435_437_crc.h"
+#endif
+#ifdef WWDT_MODULE_ENABLED
+#include "at32f435_437_wwdt.h"
+#endif
+#ifdef WDT_MODULE_ENABLED
+#include "at32f435_437_wdt.h"
+#endif
+#ifdef EXINT_MODULE_ENABLED
+#include "at32f435_437_exint.h"
+#endif
+#ifdef SDIO_MODULE_ENABLED
+#include "at32f435_437_sdio.h"
+#endif
+#ifdef XMC_MODULE_ENABLED
+#include "at32f435_437_xmc.h"
+#endif
+#ifdef ACC_MODULE_ENABLED
+#include "at32f435_437_acc.h"
+#endif
+#ifdef MISC_MODULE_ENABLED
+#include "at32f435_437_misc.h"
+#endif
+#ifdef EDMA_MODULE_ENABLED
+#include "at32f435_437_edma.h"
+#endif
+#ifdef QSPI_MODULE_ENABLED
+#include "at32f435_437_qspi.h"
+#endif
+#ifdef SCFG_MODULE_ENABLED
+#include "at32f435_437_scfg.h"
+#endif
+#ifdef EMAC_MODULE_ENABLED
+#include "at32f435_437_emac.h"
+#endif
+#ifdef DVP_MODULE_ENABLED
+#include "at32f435_437_dvp.h"
+#endif
+#ifdef USB_MODULE_ENABLED
+#include "at32f435_437_usb.h"
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
--- a/bsp/at32/at32f435-start/board/inc/board.h
+++ b/bsp/at32/at32f435-start/board/inc/board.h
@@ -0,0 +1,52 @@
+/*
+ * Copyright (c) 2006-2021, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2022-03-28     shelton      first version
+ */
+
+#ifndef __BOARD_H__
+#define __BOARD_H__
+
+#include <rtthread.h>
+#include "at32f435_437.h"
+#include "at32_msp.h"
+#include "drv_common.h"
+#include "drv_gpio.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define AT32_FLASH_START_ADRESS         ((uint32_t)0x08000000)
+#define FLASH_PAGE_SIZE                 (4 * 1024)
+#define AT32_FLASH_SIZE                 (4032 * 1024)
+#define AT32_FLASH_END_ADDRESS          ((uint32_t)(AT32_FLASH_START_ADRESS + AT32_FLASH_SIZE))
+
+/* internal sram memory size[kbytes] <384>, default: 384*/
+#define AT32_SRAM_SIZE                  384
+#define AT32_SRAM_END                   (0x20000000 + AT32_SRAM_SIZE * 1024)
+
+#if defined(__ARMCC_VERSION)
+extern int Image$$RW_IRAM1$$ZI$$Limit;
+#define HEAP_BEGIN                      ((void *)&Image$$RW_IRAM1$$ZI$$Limit)
+#elif __ICCARM__
+#pragma section="CSTACK"
+#define HEAP_BEGIN                      (__segment_end("CSTACK"))
+#else
+extern int __bss_end;
+#define HEAP_BEGIN                      ((void *)&__bss_end)
+#endif
+
+#define HEAP_END                        AT32_SRAM_END
+
+void system_clock_config(void);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __BOARD_H__ */
--- a/bsp/at32/at32f435-start/board/linker_scripts/link.icf
+++ b/bsp/at32/at32f435-start/board/linker_scripts/link.icf
@@ -0,0 +1,28 @@
+/*###ICF### Section handled by ICF editor, don't touch! ****/
+/*-Editor annotation file-*/
+/* IcfEditorFile="$TOOLKIT_DIR$\config\ide\IcfEditor\cortex_v1_0.xml" */
+/*-Specials-*/
+define symbol __ICFEDIT_intvec_start__ = 0x08000000;
+/*-Memory Regions-*/
+define symbol __ICFEDIT_region_ROM_start__ = 0x08000000;
+define symbol __ICFEDIT_region_ROM_end__   = 0x083EFFFF;
+define symbol __ICFEDIT_region_RAM_start__ = 0x20000000;
+define symbol __ICFEDIT_region_RAM_end__   = 0x2005FFFF;
+/*-Sizes-*/
+define symbol __ICFEDIT_size_cstack__ = 0x0400;
+define symbol __ICFEDIT_size_heap__   = 0x0000;
+/**** End of ICF editor section. ###ICF###*/
+
+define memory mem with size = 4G;
+define region ROM_region      = mem:[from __ICFEDIT_region_ROM_start__   to __ICFEDIT_region_ROM_end__];
+define region RAM_region      = mem:[from __ICFEDIT_region_RAM_start__   to __ICFEDIT_region_RAM_end__];
+
+define block CSTACK    with alignment = 8, size = __ICFEDIT_size_cstack__   { };
+
+initialize by copy { readwrite };
+do not initialize  { section .noinit };
+
+place at address mem:__ICFEDIT_intvec_start__ { readonly section .intvec };
+
+place in ROM_region   { readonly };
+place in RAM_region   { readwrite, last block CSTACK};
--- a/bsp/at32/at32f435-start/board/linker_scripts/link.lds
+++ b/bsp/at32/at32f435-start/board/linker_scripts/link.lds
@@ -0,0 +1,156 @@
+/*
+ * linker script for AT32 with GNU ld
+ */
+
+/* Program Entry, set to mark it as "used" and avoid gc */
+MEMORY
+{
+    ROM (rx) : ORIGIN = 0x08000000, LENGTH = 4032k /* 4032KB flash */
+    RAM (rw) : ORIGIN = 0x20000000, LENGTH =  384k /* 384K sram */
+}
+ENTRY(Reset_Handler)
+_system_stack_size = 0x200;
+
+SECTIONS
+{
+    .text :
+    {
+        . = ALIGN(4);
+        _stext = .;
+        KEEP(*(.isr_vector))            /* Startup code */
+
+        . = ALIGN(4);
+        *(.text)                        /* remaining code */
+        *(.text.*)                      /* remaining code */
+        *(.rodata)                      /* read-only data (constants) */
+        *(.rodata*)
+        *(.glue_7)
+        *(.glue_7t)
+        *(.gnu.linkonce.t*)
+
+        /* section information for finsh shell */
+        . = ALIGN(4);
+        __fsymtab_start = .;
+        KEEP(*(FSymTab))
+        __fsymtab_end = .;
+
+        . = ALIGN(4);
+        __vsymtab_start = .;
+        KEEP(*(VSymTab))
+        __vsymtab_end = .;
+
+        /* section information for initial. */
+        . = ALIGN(4);
+        __rt_init_start = .;
+        KEEP(*(SORT(.rti_fn*)))
+        __rt_init_end = .;
+
+        . = ALIGN(4);
+
+        PROVIDE(__ctors_start__ = .);
+        KEEP (*(SORT(.init_array.*)))
+        KEEP (*(.init_array))
+        PROVIDE(__ctors_end__ = .);
+
+        . = ALIGN(4); 
+
+        _etext = .;
+    } > ROM = 0
+
+    /* .ARM.exidx is sorted, so has to go in its own output section.  */
+    __exidx_start = .;
+    .ARM.exidx :
+    {
+        *(.ARM.exidx* .gnu.linkonce.armexidx.*)
+
+        /* This is used by the startup in order to initialize the .data secion */
+        _sidata = .;
+    } > ROM
+    __exidx_end = .;
+
+    /* .data section which is used for initialized data */
+
+    .data : AT (_sidata)
+    {
+        . = ALIGN(4);
+        /* This is used by the startup in order to initialize the .data secion */
+        _sdata = . ;
+
+        *(.data)
+        *(.data.*)
+        *(.gnu.linkonce.d*)
+
+        PROVIDE(__dtors_start__ = .);
+        KEEP(*(SORT(.dtors.*)))
+        KEEP(*(.dtors))
+        PROVIDE(__dtors_end__ = .);
+        
+        . = ALIGN(4);
+        /* This is used by the startup in order to initialize the .data secion */
+        _edata = . ;
+    } >RAM
+
+    .stack : 
+    {
+        . = ALIGN(4);
+        _sstack = .;
+        . = . + _system_stack_size;
+        . = ALIGN(4);
+        _estack = .;
+    } >RAM
+
+    __bss_start = .;
+    .bss :
+    {
+        . = ALIGN(4);
+        /* This is used by the startup in order to initialize the .bss secion */
+        _sbss = .;
+
+        *(.bss)
+        *(.bss.*)
+        *(COMMON)
+
+        . = ALIGN(4);
+        /* This is used by the startup in order to initialize the .bss secion */
+        _ebss = . ;
+        
+        *(.bss.init)
+    } > RAM
+    __bss_end = .;
+
+    _end = .;
+
+    /* Stabs debugging sections.  */
+    .stab          0 : { *(.stab) }
+    .stabstr       0 : { *(.stabstr) }
+    .stab.excl     0 : { *(.stab.excl) }
+    .stab.exclstr  0 : { *(.stab.exclstr) }
+    .stab.index    0 : { *(.stab.index) }
+    .stab.indexstr 0 : { *(.stab.indexstr) }
+    .comment       0 : { *(.comment) }
+    /* DWARF debug sections.
+     * Symbols in the DWARF debugging sections are relative to the beginning
+     * of the section so we begin them at 0.  */
+    /* DWARF 1 */
+    .debug          0 : { *(.debug) }
+    .line           0 : { *(.line) }
+    /* GNU DWARF 1 extensions */
+    .debug_srcinfo  0 : { *(.debug_srcinfo) }
+    .debug_sfnames  0 : { *(.debug_sfnames) }
+    /* DWARF 1.1 and DWARF 2 */
+    .debug_aranges  0 : { *(.debug_aranges) }
+    .debug_pubnames 0 : { *(.debug_pubnames) }
+    /* DWARF 2 */
+    .debug_info     0 : { *(.debug_info .gnu.linkonce.wi.*) }
+    .debug_abbrev   0 : { *(.debug_abbrev) }
+    .debug_line     0 : { *(.debug_line) }
+    .debug_frame    0 : { *(.debug_frame) }
+    .debug_str      0 : { *(.debug_str) }
+    .debug_loc      0 : { *(.debug_loc) }
+    .debug_macinfo  0 : { *(.debug_macinfo) }
+    /* SGI/MIPS DWARF 2 extensions */
+    .debug_weaknames 0 : { *(.debug_weaknames) }
+    .debug_funcnames 0 : { *(.debug_funcnames) }
+    .debug_typenames 0 : { *(.debug_typenames) }
+    .debug_varnames  0 : { *(.debug_varnames) }
+}
--- a/bsp/at32/at32f435-start/board/linker_scripts/link.sct
+++ b/bsp/at32/at32f435-start/board/linker_scripts/link.sct
@@ -0,0 +1,15 @@
+; *************************************************************
+; *** Scatter-Loading Description File generated by uVision ***
+; *************************************************************
+
+LR_IROM1 0x08000000 0x00400000  {    ; load region size_region
+  ER_IROM1 0x08000000 0x00400000  {  ; load address = execution address
+   *.o (RESET, +First)
+   *(InRoot$$Sections)
+   .ANY (+RO)
+  }
+  RW_IRAM1 0x20000000 0x00060000  {  ; RW data
+   .ANY (+RW +ZI)
+  }
+}
+
--- a/bsp/at32/at32f435-start/board/src/at32_msp.c
+++ b/bsp/at32/at32f435-start/board/src/at32_msp.c
@@ -0,0 +1,479 @@
+/*
+ * Copyright (c) 2006-2018, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2022-03-28     shelton      first version
+ */
+
+#include <rtthread.h>
+#include "at32f435_437.h"
+#include "at32_msp.h"
+
+#ifdef BSP_USING_UART
+void at32_msp_usart_init(void *instance)
+{
+    gpio_init_type gpio_init_struct;
+    usart_type *usart_x = (usart_type *)instance;
+
+    gpio_default_para_init(&gpio_init_struct);
+    gpio_init_struct.gpio_drive_strength = GPIO_DRIVE_STRENGTH_STRONGER;
+#ifdef BSP_USING_UART1
+    if(usart_x == USART1)
+    {
+        crm_periph_clock_enable(CRM_USART1_PERIPH_CLOCK, TRUE);
+        crm_periph_clock_enable(CRM_GPIOA_PERIPH_CLOCK, TRUE);
+
+        gpio_init_struct.gpio_mode = GPIO_MODE_MUX;
+        gpio_init_struct.gpio_out_type = GPIO_OUTPUT_PUSH_PULL;
+        gpio_init_struct.gpio_pull = GPIO_PULL_NONE;
+        gpio_init_struct.gpio_pins = GPIO_PINS_9 | GPIO_PINS_10;
+        gpio_init(GPIOA, &gpio_init_struct);
+
+        gpio_pin_mux_config(GPIOA, GPIO_PINS_SOURCE9, GPIO_MUX_7);
+        gpio_pin_mux_config(GPIOA, GPIO_PINS_SOURCE10, GPIO_MUX_7);
+    }
+#endif
+#ifdef BSP_USING_UART2
+    if(usart_x == USART2)
+    {
+        crm_periph_clock_enable(CRM_USART2_PERIPH_CLOCK, TRUE);
+        crm_periph_clock_enable(CRM_GPIOA_PERIPH_CLOCK, TRUE);
+
+        gpio_init_struct.gpio_mode = GPIO_MODE_MUX;
+        gpio_init_struct.gpio_out_type = GPIO_OUTPUT_PUSH_PULL;
+        gpio_init_struct.gpio_pull = GPIO_PULL_NONE;
+        gpio_init_struct.gpio_pins = GPIO_PINS_2 | GPIO_PINS_3;
+        gpio_init(GPIOA, &gpio_init_struct);
+
+        gpio_pin_mux_config(GPIOA, GPIO_PINS_SOURCE2, GPIO_MUX_7);
+        gpio_pin_mux_config(GPIOA, GPIO_PINS_SOURCE3, GPIO_MUX_7);
+    }
+#endif
+#ifdef BSP_USING_UART3
+    if(usart_x == USART3)
+    {
+        crm_periph_clock_enable(CRM_USART3_PERIPH_CLOCK, TRUE);
+        crm_periph_clock_enable(CRM_GPIOB_PERIPH_CLOCK, TRUE);
+
+        gpio_init_struct.gpio_mode = GPIO_MODE_MUX;
+        gpio_init_struct.gpio_out_type = GPIO_OUTPUT_PUSH_PULL;
+        gpio_init_struct.gpio_pull = GPIO_PULL_NONE;
+        gpio_init_struct.gpio_pins = GPIO_PINS_10 | GPIO_PINS_11;
+        gpio_init(GPIOB, &gpio_init_struct);
+
+        gpio_pin_mux_config(GPIOB, GPIO_PINS_SOURCE10, GPIO_MUX_7);
+        gpio_pin_mux_config(GPIOB, GPIO_PINS_SOURCE11, GPIO_MUX_7);
+    }
+#endif
+    /* add others */
+}
+#endif /* BSP_USING_SERIAL */
+
+#ifdef BSP_USING_SPI
+void at32_msp_spi_init(void *instance)
+{
+    gpio_init_type gpio_init_struct;
+    spi_type *spi_x = (spi_type *)instance;
+
+    gpio_default_para_init(&gpio_init_struct);
+    gpio_init_struct.gpio_drive_strength = GPIO_DRIVE_STRENGTH_STRONGER;
+#ifdef BSP_USING_SPI1
+    if(spi_x == SPI1)
+    {
+        crm_periph_clock_enable(CRM_SPI1_PERIPH_CLOCK, TRUE);
+        crm_periph_clock_enable(CRM_GPIOA_PERIPH_CLOCK, TRUE);
+
+        gpio_init_struct.gpio_mode = GPIO_MODE_OUTPUT;
+        gpio_init_struct.gpio_out_type = GPIO_OUTPUT_PUSH_PULL;
+        gpio_init_struct.gpio_pull = GPIO_PULL_NONE;
+        gpio_init_struct.gpio_pins = GPIO_PINS_4;
+        gpio_init(GPIOA, &gpio_init_struct);
+
+        gpio_init_struct.gpio_mode = GPIO_MODE_MUX;
+        gpio_init_struct.gpio_pins = GPIO_PINS_5 | GPIO_PINS_6 | GPIO_PINS_7;
+        gpio_init(GPIOA, &gpio_init_struct);
+
+        gpio_pin_mux_config(GPIOA, GPIO_PINS_SOURCE5, GPIO_MUX_5);
+        gpio_pin_mux_config(GPIOA, GPIO_PINS_SOURCE6, GPIO_MUX_5);
+        gpio_pin_mux_config(GPIOA, GPIO_PINS_SOURCE7, GPIO_MUX_5);
+    }
+#endif
+#ifdef BSP_USING_SPI2
+    if(spi_x == SPI2)
+    {
+        crm_periph_clock_enable(CRM_SPI2_PERIPH_CLOCK, TRUE);
+        crm_periph_clock_enable(CRM_GPIOB_PERIPH_CLOCK, TRUE);
+
+        gpio_init_struct.gpio_mode = GPIO_MODE_OUTPUT;
+        gpio_init_struct.gpio_out_type = GPIO_OUTPUT_PUSH_PULL;
+        gpio_init_struct.gpio_pull = GPIO_PULL_NONE;
+        gpio_init_struct.gpio_pins = GPIO_PINS_12;
+        gpio_init(GPIOB, &gpio_init_struct);
+
+        gpio_init_struct.gpio_mode = GPIO_MODE_MUX;
+        gpio_init_struct.gpio_pins = GPIO_PINS_13 | GPIO_PINS_14 | GPIO_PINS_15;
+        gpio_init(GPIOB, &gpio_init_struct);
+
+        gpio_pin_mux_config(GPIOB, GPIO_PINS_SOURCE13, GPIO_MUX_5);
+        gpio_pin_mux_config(GPIOB, GPIO_PINS_SOURCE14, GPIO_MUX_5);
+        gpio_pin_mux_config(GPIOB, GPIO_PINS_SOURCE15, GPIO_MUX_5);
+    }
+#endif
+    /* add others */
+}
+#endif /* BSP_USING_SPI */
+
+#ifdef BSP_USING_SDIO
+void at32_msp_sdio_init(void *instance)
+{
+    gpio_init_type gpio_init_struct;
+    sdio_type *sdio_x = (sdio_type *)instance;
+
+    gpio_default_para_init(&gpio_init_struct);
+    gpio_init_struct.gpio_drive_strength = GPIO_DRIVE_STRENGTH_STRONGER;
+    if(sdio_x == SDIO1)
+    {
+        /* if used dma ... */
+        crm_periph_clock_enable(CRM_DMA2_PERIPH_CLOCK, TRUE);
+        crm_periph_clock_enable(CRM_SDIO1_PERIPH_CLOCK, TRUE);
+        crm_periph_clock_enable(CRM_GPIOC_PERIPH_CLOCK, TRUE);
+        crm_periph_clock_enable(CRM_GPIOD_PERIPH_CLOCK, TRUE);
+
+        gpio_init_struct.gpio_mode = GPIO_MODE_MUX;
+        gpio_init_struct.gpio_out_type = GPIO_OUTPUT_PUSH_PULL;
+        gpio_init_struct.gpio_pull = GPIO_PULL_NONE;
+        gpio_init_struct.gpio_pins = GPIO_PINS_8 | GPIO_PINS_9 | GPIO_PINS_10 | GPIO_PINS_11 | GPIO_PINS_12;
+        gpio_init(GPIOC, &gpio_init_struct);
+
+        gpio_pin_mux_config(GPIOC, GPIO_PINS_SOURCE8, GPIO_MUX_12);
+        gpio_pin_mux_config(GPIOC, GPIO_PINS_SOURCE9, GPIO_MUX_12);
+        gpio_pin_mux_config(GPIOC, GPIO_PINS_SOURCE10, GPIO_MUX_12);
+        gpio_pin_mux_config(GPIOC, GPIO_PINS_SOURCE11, GPIO_MUX_12);
+        gpio_pin_mux_config(GPIOC, GPIO_PINS_SOURCE12, GPIO_MUX_12);
+
+        gpio_init_struct.gpio_pins = GPIO_PINS_2;
+        gpio_init(GPIOD, &gpio_init_struct);
+
+        gpio_pin_mux_config(GPIOD, GPIO_PINS_SOURCE2, GPIO_MUX_12);
+    }
+}
+#endif /* BSP_USING_SDIO */
+
+#ifdef BSP_USING_PWM
+void at32_msp_tmr_init(void *instance)
+{
+    gpio_init_type gpio_init_struct;
+    tmr_type *tmr_x = (tmr_type *)instance;
+
+    gpio_default_para_init(&gpio_init_struct);
+    gpio_init_struct.gpio_drive_strength = GPIO_DRIVE_STRENGTH_STRONGER;
+    if(tmr_x == TMR1)
+    {
+        /* tmr1 clock enable */
+        crm_periph_clock_enable(CRM_TMR1_PERIPH_CLOCK, TRUE);
+        /* gpioa clock enable */
+        crm_periph_clock_enable(CRM_GPIOA_PERIPH_CLOCK, TRUE);
+
+        /* gpioa configuration: tmr1 channel1 and channel4 as alternate function push-pull */
+        gpio_init_struct.gpio_mode = GPIO_MODE_MUX;
+        gpio_init_struct.gpio_out_type = GPIO_OUTPUT_PUSH_PULL;
+        gpio_init_struct.gpio_pull = GPIO_PULL_NONE;
+        gpio_init_struct.gpio_pins = GPIO_PINS_8 | GPIO_PINS_11;
+        gpio_init(GPIOA, &gpio_init_struct);
+
+        gpio_pin_mux_config(GPIOA, GPIO_PINS_SOURCE8, GPIO_MUX_1);
+        gpio_pin_mux_config(GPIOA, GPIO_PINS_SOURCE11, GPIO_MUX_1);
+    }
+
+    if(tmr_x == TMR2)
+    {
+        /* tmr2 clock enable */
+        crm_periph_clock_enable(CRM_TMR2_PERIPH_CLOCK, TRUE);
+        /* gpioa clock enable */
+        crm_periph_clock_enable(CRM_GPIOA_PERIPH_CLOCK, TRUE);
+
+        /* gpioa configuration: tmr1 channel1 and channel2 as alternate function push-pull */
+        gpio_init_struct.gpio_mode = GPIO_MODE_MUX;
+        gpio_init_struct.gpio_out_type = GPIO_OUTPUT_PUSH_PULL;
+        gpio_init_struct.gpio_pull = GPIO_PULL_NONE;
+        gpio_init_struct.gpio_pins = GPIO_PINS_0 | GPIO_PINS_1;
+        gpio_init(GPIOA, &gpio_init_struct);
+
+        gpio_pin_mux_config(GPIOA, GPIO_PINS_SOURCE0, GPIO_MUX_1);
+        gpio_pin_mux_config(GPIOA, GPIO_PINS_SOURCE1, GPIO_MUX_1);
+    }
+    /* add others */
+}
+#endif /* BSP_USING_PWM */
+
+#ifdef BSP_USING_ADC
+void at32_msp_adc_init(void *instance)
+{
+    gpio_init_type gpio_init_struct;
+    adc_type *adc_x = (adc_type *)instance;
+
+    gpio_default_para_init(&gpio_init_struct);
+    gpio_init_struct.gpio_drive_strength = GPIO_DRIVE_STRENGTH_STRONGER;
+#ifdef BSP_USING_ADC1
+    if(adc_x == ADC1)
+    {
+        /* adc1 & gpio clock enable */
+        crm_periph_clock_enable(CRM_ADC1_PERIPH_CLOCK, TRUE);
+        crm_periph_clock_enable(CRM_GPIOC_PERIPH_CLOCK, TRUE);
+
+        /* configure adc channel as analog input */
+        gpio_init_struct.gpio_pins = GPIO_PINS_0 | GPIO_PINS_1 | GPIO_PINS_2 | GPIO_PINS_3 | GPIO_PINS_4 | GPIO_PINS_5;
+        gpio_init_struct.gpio_mode = GPIO_MODE_ANALOG;
+        gpio_init(GPIOC, &gpio_init_struct);
+    }
+#endif
+
+#ifdef BSP_USING_ADC2
+    if(adc_x == ADC2)
+    {
+        /* adc2 & gpio clock enable */
+        crm_periph_clock_enable(CRM_ADC2_PERIPH_CLOCK, TRUE);
+        crm_periph_clock_enable(CRM_GPIOC_PERIPH_CLOCK, TRUE);
+
+        /* configure adc channel as analog input */
+        gpio_init_struct.gpio_pins = GPIO_PINS_0 | GPIO_PINS_1 | GPIO_PINS_2 | GPIO_PINS_3 | GPIO_PINS_4 | GPIO_PINS_5;
+        gpio_init_struct.gpio_mode = GPIO_MODE_ANALOG;
+        gpio_init(GPIOC, &gpio_init_struct);
+    }
+#endif
+}
+#endif /* BSP_USING_ADC */
+
+#ifdef BSP_USING_HWTIMER
+void at32_msp_hwtmr_init(void *instance)
+{
+    tmr_type *tmr_x = (tmr_type *)instance;
+
+#ifdef BSP_USING_HWTMR3
+    if(tmr_x == TMR3)
+    {
+        /* tmr3 clock enable */
+        crm_periph_clock_enable(CRM_TMR3_PERIPH_CLOCK, TRUE);
+    }
+#endif
+
+#ifdef BSP_USING_HWTMR4
+    if(tmr_x == TMR4)
+    {
+        /* tmr4 clock enable */
+        crm_periph_clock_enable(CRM_TMR4_PERIPH_CLOCK, TRUE);
+    }
+#endif
+
+#ifdef BSP_USING_HWTMR5
+    if(tmr_x == TMR5)
+    {
+        /* tmr5 clock enable */
+        crm_periph_clock_enable(CRM_TMR5_PERIPH_CLOCK, TRUE);
+    }
+#endif
+}
+#endif
+
+#ifdef BSP_USING_CAN
+void at32_msp_can_init(void *instance)
+{
+    gpio_init_type gpio_init_struct;
+    can_type *can_x = (can_type *)instance;
+
+    gpio_default_para_init(&gpio_init_struct);
+    gpio_init_struct.gpio_drive_strength = GPIO_DRIVE_STRENGTH_STRONGER;
+#ifdef BSP_USING_CAN1
+    if(can_x == CAN1)
+    {
+        crm_periph_clock_enable(CRM_CAN1_PERIPH_CLOCK, TRUE);
+        crm_periph_clock_enable(CRM_GPIOB_PERIPH_CLOCK, TRUE);
+
+        gpio_init_struct.gpio_mode = GPIO_MODE_MUX;
+        gpio_init_struct.gpio_out_type = GPIO_OUTPUT_PUSH_PULL;
+        gpio_init_struct.gpio_pull = GPIO_PULL_NONE;
+        gpio_init_struct.gpio_pins = GPIO_PINS_8 | GPIO_PINS_9;
+        gpio_init(GPIOB, &gpio_init_struct);
+
+        gpio_pin_mux_config(GPIOB, GPIO_PINS_SOURCE8, GPIO_MUX_9);
+        gpio_pin_mux_config(GPIOB, GPIO_PINS_SOURCE9, GPIO_MUX_9);
+    }
+#endif
+#ifdef BSP_USING_CAN2
+    if(can_x == CAN2)
+    {
+        crm_periph_clock_enable(CRM_CAN2_PERIPH_CLOCK, TRUE);
+        crm_periph_clock_enable(CRM_GPIOB_PERIPH_CLOCK, TRUE);
+
+        gpio_init_struct.gpio_mode = GPIO_MODE_MUX;
+        gpio_init_struct.gpio_out_type = GPIO_OUTPUT_PUSH_PULL;
+        gpio_init_struct.gpio_pull = GPIO_PULL_NONE;
+        gpio_init_struct.gpio_pins = GPIO_PINS_5 | GPIO_PINS_6;
+        gpio_init(GPIOB, &gpio_init_struct);
+
+        gpio_pin_mux_config(GPIOB, GPIO_PINS_SOURCE5, GPIO_MUX_9);
+        gpio_pin_mux_config(GPIOB, GPIO_PINS_SOURCE6, GPIO_MUX_9);
+    }
+#endif
+}
+#endif /* BSP_USING_CAN */
+
+#ifdef BSP_USING_QSPI
+void at32_msp_qspi_init(void *instance)
+{
+    gpio_init_type gpio_init_struct;
+    qspi_type *qspi_x = (qspi_type *)instance;
+
+    gpio_default_para_init(&gpio_init_struct);
+    gpio_init_struct.gpio_drive_strength = GPIO_DRIVE_STRENGTH_STRONGER;
+#ifdef BSP_USING_QSPI1
+    if(qspi_x == QSPI1)
+    {
+        crm_periph_clock_enable(CRM_QSPI1_PERIPH_CLOCK, TRUE);
+        crm_periph_clock_enable(CRM_GPIOF_PERIPH_CLOCK, TRUE);
+        crm_periph_clock_enable(CRM_GPIOG_PERIPH_CLOCK, TRUE);
+
+        gpio_init_struct.gpio_mode = GPIO_MODE_MUX;
+        gpio_init_struct.gpio_out_type = GPIO_OUTPUT_PUSH_PULL;
+        gpio_init_struct.gpio_pull = GPIO_PULL_NONE;
+        gpio_init_struct.gpio_pins = GPIO_PINS_6 | GPIO_PINS_7 | GPIO_PINS_8 | GPIO_PINS_9 | GPIO_PINS_10;
+        gpio_init(GPIOF, &gpio_init_struct);
+
+        gpio_init_struct.gpio_pins = GPIO_PINS_6;
+        gpio_init(GPIOG, &gpio_init_struct);
+
+        gpio_pin_mux_config(GPIOF, GPIO_PINS_SOURCE6, GPIO_MUX_9);
+        gpio_pin_mux_config(GPIOF, GPIO_PINS_SOURCE7, GPIO_MUX_9);
+        gpio_pin_mux_config(GPIOF, GPIO_PINS_SOURCE8, GPIO_MUX_10);
+        gpio_pin_mux_config(GPIOF, GPIO_PINS_SOURCE9, GPIO_MUX_10);
+        gpio_pin_mux_config(GPIOF, GPIO_PINS_SOURCE10, GPIO_MUX_9);
+        gpio_pin_mux_config(GPIOG, GPIO_PINS_SOURCE6, GPIO_MUX_10);
+    }
+#endif
+#ifdef BSP_USING_QSPI2
+    if(qspi_x == QSPI2)
+    {
+        crm_periph_clock_enable(CRM_QSPI2_PERIPH_CLOCK, TRUE);
+        crm_periph_clock_enable(CRM_GPIOE_PERIPH_CLOCK, TRUE);
+        crm_periph_clock_enable(CRM_GPIOG_PERIPH_CLOCK, TRUE);
+
+        gpio_init_struct.gpio_mode = GPIO_MODE_MUX;
+        gpio_init_struct.gpio_out_type = GPIO_OUTPUT_PUSH_PULL;
+        gpio_init_struct.gpio_pull = GPIO_PULL_NONE;
+        gpio_init_struct.gpio_pins = GPIO_PINS_7 | GPIO_PINS_8 | GPIO_PINS_9 | GPIO_PINS_10;
+        gpio_init(GPIOE, &gpio_init_struct);
+
+        gpio_init_struct.gpio_pins = GPIO_PINS_8 | GPIO_PINS_13;
+        gpio_init(GPIOG, &gpio_init_struct);
+
+        gpio_pin_mux_config(GPIOE, GPIO_PINS_SOURCE7, GPIO_MUX_10);
+        gpio_pin_mux_config(GPIOE, GPIO_PINS_SOURCE8, GPIO_MUX_10);
+        gpio_pin_mux_config(GPIOE, GPIO_PINS_SOURCE9, GPIO_MUX_10);
+        gpio_pin_mux_config(GPIOE, GPIO_PINS_SOURCE10, GPIO_MUX_10);
+        gpio_pin_mux_config(GPIOG, GPIO_PINS_SOURCE8, GPIO_MUX_5);
+        gpio_pin_mux_config(GPIOG, GPIO_PINS_SOURCE13, GPIO_MUX_5);
+    }
+#endif
+}
+#endif /* BSP_USING_QSPI */
+
+#ifdef BSP_USING_SDRAM
+void at32_msp_sdram_init(void *instance)
+{
+    gpio_init_type gpio_init_struct;
+
+    gpio_default_para_init(&gpio_init_struct);
+
+    /* enable the gpio clock */
+    crm_periph_clock_enable(CRM_GPIOB_PERIPH_CLOCK, TRUE);
+    crm_periph_clock_enable(CRM_GPIOC_PERIPH_CLOCK, TRUE);
+    crm_periph_clock_enable(CRM_GPIOD_PERIPH_CLOCK, TRUE);
+    crm_periph_clock_enable(CRM_GPIOE_PERIPH_CLOCK, TRUE);
+    crm_periph_clock_enable(CRM_GPIOF_PERIPH_CLOCK, TRUE);
+    crm_periph_clock_enable(CRM_GPIOG_PERIPH_CLOCK, TRUE);
+
+    /* enable the xmc clock */
+    crm_periph_clock_enable(CRM_XMC_PERIPH_CLOCK, TRUE);
+
+    /* address lines configuration */
+    gpio_init_struct.gpio_mode = GPIO_MODE_MUX;
+    gpio_init_struct.gpio_out_type = GPIO_OUTPUT_PUSH_PULL;
+    gpio_init_struct.gpio_pull = GPIO_PULL_NONE;
+    gpio_init_struct.gpio_drive_strength = GPIO_DRIVE_STRENGTH_STRONGER;
+
+    gpio_init_struct.gpio_pins = GPIO_PINS_5 | GPIO_PINS_6;
+    gpio_init(GPIOB, &gpio_init_struct);
+
+    gpio_init_struct.gpio_pins = GPIO_PINS_0 | GPIO_PINS_2 | GPIO_PINS_3;
+    gpio_init(GPIOC, &gpio_init_struct);
+
+    gpio_init_struct.gpio_pins = GPIO_PINS_0 | GPIO_PINS_1 | GPIO_PINS_8 | GPIO_PINS_9 | GPIO_PINS_10 | GPIO_PINS_14 | GPIO_PINS_15;
+    gpio_init(GPIOD, &gpio_init_struct);
+
+    gpio_init_struct.gpio_pins = GPIO_PINS_0 | GPIO_PINS_1 | GPIO_PINS_7 | GPIO_PINS_8 | GPIO_PINS_10 |
+                                 GPIO_PINS_9 | GPIO_PINS_11 | GPIO_PINS_11 | GPIO_PINS_12 |
+                                 GPIO_PINS_13 | GPIO_PINS_14 | GPIO_PINS_15;
+    gpio_init(GPIOE, &gpio_init_struct);
+
+    gpio_init_struct.gpio_pins = GPIO_PINS_0 | GPIO_PINS_1 | GPIO_PINS_2 | GPIO_PINS_3 |
+                                 GPIO_PINS_4 | GPIO_PINS_5 | GPIO_PINS_11 | GPIO_PINS_12 |
+                                 GPIO_PINS_13 | GPIO_PINS_14 | GPIO_PINS_15;
+    gpio_init(GPIOF, &gpio_init_struct);
+
+    gpio_init_struct.gpio_pins = GPIO_PINS_0 | GPIO_PINS_1 | GPIO_PINS_2 | GPIO_PINS_4 |
+                                 GPIO_PINS_5 | GPIO_PINS_8 | GPIO_PINS_15;
+    gpio_init(GPIOG, &gpio_init_struct);
+
+    /* gpio mux configuration */
+    gpio_pin_mux_config(GPIOB, GPIO_PINS_SOURCE5, GPIO_MUX_12);
+    gpio_pin_mux_config(GPIOB, GPIO_PINS_SOURCE6, GPIO_MUX_12);
+
+    gpio_pin_mux_config(GPIOC, GPIO_PINS_SOURCE0, GPIO_MUX_12);
+    gpio_pin_mux_config(GPIOC, GPIO_PINS_SOURCE2, GPIO_MUX_12);
+    gpio_pin_mux_config(GPIOC, GPIO_PINS_SOURCE3, GPIO_MUX_12);
+
+    gpio_pin_mux_config(GPIOD, GPIO_PINS_SOURCE0, GPIO_MUX_12);
+    gpio_pin_mux_config(GPIOD, GPIO_PINS_SOURCE1, GPIO_MUX_12);
+    gpio_pin_mux_config(GPIOD, GPIO_PINS_SOURCE8, GPIO_MUX_12);
+    gpio_pin_mux_config(GPIOD, GPIO_PINS_SOURCE9, GPIO_MUX_12);
+    gpio_pin_mux_config(GPIOD, GPIO_PINS_SOURCE10, GPIO_MUX_12);
+    gpio_pin_mux_config(GPIOD, GPIO_PINS_SOURCE14, GPIO_MUX_12);
+    gpio_pin_mux_config(GPIOD, GPIO_PINS_SOURCE15, GPIO_MUX_12);
+
+    gpio_pin_mux_config(GPIOE, GPIO_PINS_SOURCE0, GPIO_MUX_12);
+    gpio_pin_mux_config(GPIOE, GPIO_PINS_SOURCE1, GPIO_MUX_12);
+    gpio_pin_mux_config(GPIOE, GPIO_PINS_SOURCE7, GPIO_MUX_12);
+    gpio_pin_mux_config(GPIOE, GPIO_PINS_SOURCE8, GPIO_MUX_12);
+    gpio_pin_mux_config(GPIOE, GPIO_PINS_SOURCE9, GPIO_MUX_12);
+    gpio_pin_mux_config(GPIOE, GPIO_PINS_SOURCE10, GPIO_MUX_12);
+    gpio_pin_mux_config(GPIOE, GPIO_PINS_SOURCE11, GPIO_MUX_12);
+    gpio_pin_mux_config(GPIOE, GPIO_PINS_SOURCE12, GPIO_MUX_12);
+    gpio_pin_mux_config(GPIOE, GPIO_PINS_SOURCE13, GPIO_MUX_12);
+    gpio_pin_mux_config(GPIOE, GPIO_PINS_SOURCE14, GPIO_MUX_12);
+    gpio_pin_mux_config(GPIOE, GPIO_PINS_SOURCE15, GPIO_MUX_12);
+
+    gpio_pin_mux_config(GPIOF, GPIO_PINS_SOURCE0, GPIO_MUX_12);
+    gpio_pin_mux_config(GPIOF, GPIO_PINS_SOURCE1, GPIO_MUX_12);
+    gpio_pin_mux_config(GPIOF, GPIO_PINS_SOURCE2, GPIO_MUX_12);
+    gpio_pin_mux_config(GPIOF, GPIO_PINS_SOURCE3, GPIO_MUX_12);
+    gpio_pin_mux_config(GPIOF, GPIO_PINS_SOURCE4, GPIO_MUX_12);
+    gpio_pin_mux_config(GPIOF, GPIO_PINS_SOURCE5, GPIO_MUX_12);
+    gpio_pin_mux_config(GPIOF, GPIO_PINS_SOURCE11, GPIO_MUX_12);
+    gpio_pin_mux_config(GPIOF, GPIO_PINS_SOURCE12, GPIO_MUX_12);
+    gpio_pin_mux_config(GPIOF, GPIO_PINS_SOURCE13, GPIO_MUX_12);
+    gpio_pin_mux_config(GPIOF, GPIO_PINS_SOURCE14, GPIO_MUX_12);
+    gpio_pin_mux_config(GPIOF, GPIO_PINS_SOURCE15, GPIO_MUX_12);
+
+    gpio_pin_mux_config(GPIOG, GPIO_PINS_SOURCE0, GPIO_MUX_12);
+    gpio_pin_mux_config(GPIOG, GPIO_PINS_SOURCE1, GPIO_MUX_12);
+    gpio_pin_mux_config(GPIOG, GPIO_PINS_SOURCE2, GPIO_MUX_12);
+    gpio_pin_mux_config(GPIOG, GPIO_PINS_SOURCE4, GPIO_MUX_12);
+    gpio_pin_mux_config(GPIOG, GPIO_PINS_SOURCE5, GPIO_MUX_12);
+    gpio_pin_mux_config(GPIOG, GPIO_PINS_SOURCE8, GPIO_MUX_12);
+    gpio_pin_mux_config(GPIOG, GPIO_PINS_SOURCE15, GPIO_MUX_12);
+}
+
+#endif /* BSP_USING_SDRAM */
--- a/bsp/at32/at32f435-start/board/src/board.c
+++ b/bsp/at32/at32f435-start/board/src/board.c
@@ -0,0 +1,85 @@
+/*
+ * Copyright (c) 2006-2021, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2022-03-28     shelton      first version
+ */
+
+#include "board.h"
+
+void system_clock_config(void)
+{
+  /* enable pwc periph clock */
+  crm_periph_clock_enable(CRM_PWC_PERIPH_CLOCK, TRUE);
+
+  /* config ldo voltage */
+  pwc_ldo_output_voltage_set(PWC_LDO_OUTPUT_1V3);
+
+  /* set the flash clock divider */
+  flash_clock_divider_set(FLASH_CLOCK_DIV_3);
+
+  /* reset crm */
+  crm_reset();
+
+  crm_clock_source_enable(CRM_CLOCK_SOURCE_HEXT, TRUE);
+
+  /* wait till hext is ready */
+  while(crm_hext_stable_wait() == ERROR)
+  {
+  }
+
+  /* config pll clock resource
+  common frequency config list: pll source selected  hick or hext(8mhz)
+  _______________________________________________________________________________________
+  |        |         |         |         |         |         |         |        |        |
+  |pll(mhz)|   288   |   252   |   216   |   180   |   144   |   108   |   72   |   36   |
+  |________|_________|_________|_________|_________|_________|_________|_________________|
+  |        |         |         |         |         |         |         |        |        |
+  |pll_ns  |   72    |   63    |   108   |   90    |   72    |   108   |   72   |   72   |
+  |        |         |         |         |         |         |         |        |        |
+  |pll_ms  |   1     |   1     |   1     |   1     |   1     |   1     |   1    |   1    |
+  |        |         |         |         |         |         |         |        |        |
+  |pll_fr  |   FR_2  |   FR_2  |   FR_4  |   FR_4  |   FR_4  |   FR_8  |   FR_8 |   FR_16|
+  |________|_________|_________|_________|_________|_________|_________|________|________|
+
+  if pll clock source selects hext with other frequency values, or configure pll to other
+  frequency values, please use the at32 new clock  configuration tool for configuration.  */
+  crm_pll_config(CRM_PLL_SOURCE_HEXT, 72, 1, CRM_PLL_FR_2);
+
+  /* enable pll */
+  crm_clock_source_enable(CRM_CLOCK_SOURCE_PLL, TRUE);
+
+  /* wait till pll is ready */
+  while(crm_flag_get(CRM_PLL_STABLE_FLAG) != SET)
+  {
+  }
+
+  /* config ahbclk */
+  crm_ahb_div_set(CRM_AHB_DIV_1);
+
+  /* config apb2clk */
+  crm_apb2_div_set(CRM_APB2_DIV_2);
+
+  /* config apb1clk */
+  crm_apb1_div_set(CRM_APB1_DIV_2);
+
+  /* enable auto step mode */
+  crm_auto_step_mode_enable(TRUE);
+
+  /* select pll as system clock source */
+  crm_sysclk_switch(CRM_SCLK_PLL);
+
+  /* wait till pll is used as system clock source */
+  while(crm_sysclk_switch_status_get() != CRM_SCLK_PLL)
+  {
+  }
+
+  /* disable auto step mode */
+  crm_auto_step_mode_enable(FALSE);
+
+  /* update system_core_clock global variable */
+  system_core_clock_update();
+}
--- a/bsp/at32/at32f435-start/project.ewp
+++ b/bsp/at32/at32f435-start/project.ewp
--- a/bsp/at32/at32f435-start/project.eww
+++ b/bsp/at32/at32f435-start/project.eww
@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="iso-8859-1"?>
+
+<workspace>
+  <project>
+    <path>$WS_DIR$\project.ewp</path>
+  </project>
+  <batchBuild/>
+</workspace>
+
+
--- a/bsp/at32/at32f435-start/project.uvopt
+++ b/bsp/at32/at32f435-start/project.uvopt
@@ -0,0 +1,167 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no" ?>
+<ProjectOpt xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="project_opt.xsd">
+
+  <SchemaVersion>1.0</SchemaVersion>
+
+  <Header>### uVision Project, (C) Keil Software</Header>
+
+  <Extensions>
+    <cExt>*.c</cExt>
+    <aExt>*.s*; *.src; *.a*</aExt>
+    <oExt>*.obj</oExt>
+    <lExt>*.lib</lExt>
+    <tExt>*.txt; *.h; *.inc; *.md</tExt>
+    <pExt>*.plm</pExt>
+    <CppX>*.cpp</CppX>
+  </Extensions>
+
+  <DaveTm>
+    <dwLowDateTime>0</dwLowDateTime>
+    <dwHighDateTime>0</dwHighDateTime>
+  </DaveTm>
+
+  <Target>
+    <TargetName>rt-thread</TargetName>
+    <ToolsetNumber>0x4</ToolsetNumber>
+    <ToolsetName>ARM-ADS</ToolsetName>
+    <TargetOption>
+      <CLKADS>8000000</CLKADS>
+      <OPTTT>
+        <gFlags>1</gFlags>
+        <BeepAtEnd>1</BeepAtEnd>
+        <RunSim>1</RunSim>
+        <RunTarget>0</RunTarget>
+      </OPTTT>
+      <OPTHX>
+        <HexSelection>1</HexSelection>
+        <FlashByte>65535</FlashByte>
+        <HexRangeLowAddress>0</HexRangeLowAddress>
+        <HexRangeHighAddress>0</HexRangeHighAddress>
+        <HexOffset>0</HexOffset>
+      </OPTHX>
+      <OPTLEX>
+        <PageWidth>79</PageWidth>
+        <PageLength>66</PageLength>
+        <TabStop>8</TabStop>
+        <ListingPath>.\build\keil\List\</ListingPath>
+      </OPTLEX>
+      <ListingPage>
+        <CreateCListing>1</CreateCListing>
+        <CreateAListing>1</CreateAListing>
+        <CreateLListing>1</CreateLListing>
+        <CreateIListing>0</CreateIListing>
+        <AsmCond>1</AsmCond>
+        <AsmSymb>1</AsmSymb>
+        <AsmXref>0</AsmXref>
+        <CCond>1</CCond>
+        <CCode>0</CCode>
+        <CListInc>0</CListInc>
+        <CSymb>0</CSymb>
+        <LinkerCodeListing>0</LinkerCodeListing>
+      </ListingPage>
+      <OPTXL>
+        <LMap>1</LMap>
+        <LComments>1</LComments>
+        <LGenerateSymbols>1</LGenerateSymbols>
+        <LLibSym>1</LLibSym>
+        <LLines>1</LLines>
+        <LLocSym>1</LLocSym>
+        <LPubSym>1</LPubSym>
+        <LXref>0</LXref>
+        <LExpSel>0</LExpSel>
+      </OPTXL>
+      <OPTFL>
+        <tvExp>0</tvExp>
+        <tvExpOptDlg>0</tvExpOptDlg>
+        <IsCurrentTarget>1</IsCurrentTarget>
+      </OPTFL>
+      <CpuCode>0</CpuCode>
+      <DebugOpt>
+        <uSim>0</uSim>
+        <uTrg>1</uTrg>
+        <sLdApp>1</sLdApp>
+        <sGomain>1</sGomain>
+        <sRbreak>1</sRbreak>
+        <sRwatch>1</sRwatch>
+        <sRmem>1</sRmem>
+        <sRfunc>1</sRfunc>
+        <sRbox>1</sRbox>
+        <tLdApp>1</tLdApp>
+        <tGomain>1</tGomain>
+        <tRbreak>1</tRbreak>
+        <tRwatch>1</tRwatch>
+        <tRmem>1</tRmem>
+        <tRfunc>0</tRfunc>
+        <tRbox>1</tRbox>
+        <tRtrace>0</tRtrace>
+        <sRSysVw>1</sRSysVw>
+        <tRSysVw>1</tRSysVw>
+        <tPdscDbg>0</tPdscDbg>
+        <sRunDeb>0</sRunDeb>
+        <sLrtime>0</sLrtime>
+        <nTsel>12</nTsel>
+        <sDll></sDll>
+        <sDllPa></sDllPa>
+        <sDlgDll></sDlgDll>
+        <sDlgPa></sDlgPa>
+        <sIfile></sIfile>
+        <tDll></tDll>
+        <tDllPa></tDllPa>
+        <tDlgDll></tDlgDll>
+        <tDlgPa></tDlgPa>
+        <tIfile></tIfile>
+        <pMon>BIN\CMSIS_AGDI.dll</pMon>
+      </DebugOpt>
+      <TargetDriverDllRegistry>
+        <SetRegEntry>
+          <Number>0</Number>
+          <Key>CMSIS_AGDI</Key>
+          <Name>-X"AT-Link-EZ-CMSIS-DAP" -U3B69593300C0636C0A978402 -O78 -S0 -C0 -P00 -N00("ARM CoreSight SW-DP") -D00(2BA01477) -L00(0) -FO7 -FD20000000 -FC800 -FN1 -FF0AT32F435_4032 -FS08000000 -FL03F0000</Name>
+        </SetRegEntry>
+        <SetRegEntry>
+          <Number>0</Number>
+          <Key>JL2CM3</Key>
+          <Name>-U788529815 -O78 -S0 -A0 -C0 -JU1 -JI127.0.0.1 -JP0 -RST0 -N00("ARM CoreSight SW-DP") -D00(2BA01477) -L00(4) -TO18 -TC10000000 -TP21 -TDS8007 -TDT0 -TDC1F -TIEFFFFFFFF -TIP8 -TB1 -TFE0 -FO15 -FD20000000 -FC800 -FN1 -FF0AT32F403A_1024 -FS08000000 -FL0100000</Name>
+        </SetRegEntry>
+        <SetRegEntry>
+          <Number>0</Number>
+          <Key>UL2CM3</Key>
+          <Name>UL2CM3(-O14 -S0 -C0 -N00("ARM Cortex-M3") -D00(1BA00477) -L00(4) -FO7  -FN1 -FC1000 -FD20000000 -FF0AT32F435_4032 -FL400000 -FS08000000</Name>
+        </SetRegEntry>
+      </TargetDriverDllRegistry>
+      <Breakpoint/>
+      <Tracepoint>
+        <THDelay>0</THDelay>
+      </Tracepoint>
+      <DebugFlag>
+        <trace>0</trace>
+        <periodic>0</periodic>
+        <aLwin>0</aLwin>
+        <aCover>0</aCover>
+        <aSer1>0</aSer1>
+        <aSer2>0</aSer2>
+        <aPa>0</aPa>
+        <viewmode>0</viewmode>
+        <vrSel>0</vrSel>
+        <aSym>0</aSym>
+        <aTbox>0</aTbox>
+        <AscS1>0</AscS1>
+        <AscS2>0</AscS2>
+        <AscS3>0</AscS3>
+        <aSer3>0</aSer3>
+        <eProf>0</eProf>
+        <aLa>0</aLa>
+        <aPa1>0</aPa1>
+        <AscS4>0</AscS4>
+        <aSer4>0</aSer4>
+        <StkLoc>0</StkLoc>
+        <TrcWin>0</TrcWin>
+        <newCpu>1</newCpu>
+        <uProt>0</uProt>
+      </DebugFlag>
+      <LintExecutable></LintExecutable>
+      <LintConfigFile></LintConfigFile>
+    </TargetOption>
+  </Target>
+
+</ProjectOpt>
--- a/bsp/at32/at32f435-start/project.uvoptx
+++ b/bsp/at32/at32f435-start/project.uvoptx
@@ -0,0 +1,185 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no" ?>
+<ProjectOpt xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="project_optx.xsd">
+
+  <SchemaVersion>1.0</SchemaVersion>
+
+  <Header>### uVision Project, (C) Keil Software</Header>
+
+  <Extensions>
+    <cExt>*.c</cExt>
+    <aExt>*.s*; *.src; *.a*</aExt>
+    <oExt>*.obj; *.o</oExt>
+    <lExt>*.lib</lExt>
+    <tExt>*.txt; *.h; *.inc; *.md</tExt>
+    <pExt>*.plm</pExt>
+    <CppX>*.cpp</CppX>
+    <nMigrate>0</nMigrate>
+  </Extensions>
+
+  <DaveTm>
+    <dwLowDateTime>0</dwLowDateTime>
+    <dwHighDateTime>0</dwHighDateTime>
+  </DaveTm>
+
+  <Target>
+    <TargetName>rt-thread</TargetName>
+    <ToolsetNumber>0x4</ToolsetNumber>
+    <ToolsetName>ARM-ADS</ToolsetName>
+    <TargetOption>
+      <CLKADS>12000000</CLKADS>
+      <OPTTT>
+        <gFlags>1</gFlags>
+        <BeepAtEnd>1</BeepAtEnd>
+        <RunSim>0</RunSim>
+        <RunTarget>1</RunTarget>
+        <RunAbUc>0</RunAbUc>
+      </OPTTT>
+      <OPTHX>
+        <HexSelection>1</HexSelection>
+        <FlashByte>65535</FlashByte>
+        <HexRangeLowAddress>0</HexRangeLowAddress>
+        <HexRangeHighAddress>0</HexRangeHighAddress>
+        <HexOffset>0</HexOffset>
+      </OPTHX>
+      <OPTLEX>
+        <PageWidth>79</PageWidth>
+        <PageLength>66</PageLength>
+        <TabStop>8</TabStop>
+        <ListingPath>.\build\keil\List\</ListingPath>
+      </OPTLEX>
+      <ListingPage>
+        <CreateCListing>1</CreateCListing>
+        <CreateAListing>1</CreateAListing>
+        <CreateLListing>1</CreateLListing>
+        <CreateIListing>0</CreateIListing>
+        <AsmCond>1</AsmCond>
+        <AsmSymb>1</AsmSymb>
+        <AsmXref>0</AsmXref>
+        <CCond>1</CCond>
+        <CCode>0</CCode>
+        <CListInc>0</CListInc>
+        <CSymb>0</CSymb>
+        <LinkerCodeListing>0</LinkerCodeListing>
+      </ListingPage>
+      <OPTXL>
+        <LMap>1</LMap>
+        <LComments>1</LComments>
+        <LGenerateSymbols>1</LGenerateSymbols>
+        <LLibSym>1</LLibSym>
+        <LLines>1</LLines>
+        <LLocSym>1</LLocSym>
+        <LPubSym>1</LPubSym>
+        <LXref>0</LXref>
+        <LExpSel>0</LExpSel>
+      </OPTXL>
+      <OPTFL>
+        <tvExp>1</tvExp>
+        <tvExpOptDlg>0</tvExpOptDlg>
+        <IsCurrentTarget>1</IsCurrentTarget>
+      </OPTFL>
+      <CpuCode>255</CpuCode>
+      <DebugOpt>
+        <uSim>0</uSim>
+        <uTrg>1</uTrg>
+        <sLdApp>1</sLdApp>
+        <sGomain>1</sGomain>
+        <sRbreak>1</sRbreak>
+        <sRwatch>1</sRwatch>
+        <sRmem>1</sRmem>
+        <sRfunc>1</sRfunc>
+        <sRbox>1</sRbox>
+        <tLdApp>1</tLdApp>
+        <tGomain>1</tGomain>
+        <tRbreak>1</tRbreak>
+        <tRwatch>1</tRwatch>
+        <tRmem>1</tRmem>
+        <tRfunc>0</tRfunc>
+        <tRbox>1</tRbox>
+        <tRtrace>1</tRtrace>
+        <sRSysVw>1</sRSysVw>
+        <tRSysVw>1</tRSysVw>
+        <sRunDeb>0</sRunDeb>
+        <sLrtime>0</sLrtime>
+        <bEvRecOn>1</bEvRecOn>
+        <bSchkAxf>0</bSchkAxf>
+        <bTchkAxf>0</bTchkAxf>
+        <nTsel>3</nTsel>
+        <sDll></sDll>
+        <sDllPa></sDllPa>
+        <sDlgDll></sDlgDll>
+        <sDlgPa></sDlgPa>
+        <sIfile></sIfile>
+        <tDll></tDll>
+        <tDllPa></tDllPa>
+        <tDlgDll></tDlgDll>
+        <tDlgPa></tDlgPa>
+        <tIfile></tIfile>
+        <pMon>BIN\CMSIS_AGDI.dll</pMon>
+      </DebugOpt>
+      <TargetDriverDllRegistry>
+        <SetRegEntry>
+          <Number>0</Number>
+          <Key>UL2CM3</Key>
+          <Name>UL2CM3(-S0 -C0 -P0 )  -FN1 -FC1000 -FD20000000 -FF0AT32F435_4032 -FL03F0000 -FS08000000 -FP0($$Device:-AT32F435ZMT7$Flash\AT32F435_4032.FLM)</Name>
+        </SetRegEntry>
+        <SetRegEntry>
+          <Number>0</Number>
+          <Key>CMSIS_AGDI</Key>
+          <Name>-X"Any" -UAny -O206 -S0 -C0 -P00000000 -N00("ARM CoreSight SW-DP") -D00(2BA01477) -L00(0) -TO65554 -TC10000000 -TT10000000 -TP20 -TDS8007 -TDT0 -TDC1F -TIEFFFFFFFF -TIP8 -FO7 -FD20000000 -FC1000 -FN1 -FF0AT32F435_4032.FLM -FS08000000 -FL03F0000 -FP0($$Device:-AT32F435ZMT7$Flash\AT32F435_4032.FLM)</Name>
+        </SetRegEntry>
+      </TargetDriverDllRegistry>
+      <Breakpoint/>
+      <Tracepoint>
+        <THDelay>0</THDelay>
+      </Tracepoint>
+      <DebugFlag>
+        <trace>0</trace>
+        <periodic>0</periodic>
+        <aLwin>0</aLwin>
+        <aCover>0</aCover>
+        <aSer1>0</aSer1>
+        <aSer2>0</aSer2>
+        <aPa>0</aPa>
+        <viewmode>0</viewmode>
+        <vrSel>0</vrSel>
+        <aSym>0</aSym>
+        <aTbox>0</aTbox>
+        <AscS1>0</AscS1>
+        <AscS2>0</AscS2>
+        <AscS3>0</AscS3>
+        <aSer3>0</aSer3>
+        <eProf>0</eProf>
+        <aLa>0</aLa>
+        <aPa1>0</aPa1>
+        <AscS4>0</AscS4>
+        <aSer4>0</aSer4>
+        <StkLoc>0</StkLoc>
+        <TrcWin>0</TrcWin>
+        <newCpu>0</newCpu>
+        <uProt>0</uProt>
+      </DebugFlag>
+      <LintExecutable></LintExecutable>
+      <LintConfigFile></LintConfigFile>
+      <bLintAuto>0</bLintAuto>
+      <bAutoGenD>0</bAutoGenD>
+      <LntExFlags>0</LntExFlags>
+      <pMisraName></pMisraName>
+      <pszMrule></pszMrule>
+      <pSingCmds></pSingCmds>
+      <pMultCmds></pMultCmds>
+      <pMisraNamep></pMisraNamep>
+      <pszMrulep></pszMrulep>
+      <pSingCmdsp></pSingCmdsp>
+      <pMultCmdsp></pMultCmdsp>
+    </TargetOption>
+  </Target>
+
+  <Group>
+    <GroupName>Source Group 1</GroupName>
+    <tvExp>0</tvExp>
+    <tvExpOptDlg>0</tvExpOptDlg>
+    <cbSel>0</cbSel>
+    <RteFlg>0</RteFlg>
+  </Group>
+
+</ProjectOpt>
--- a/bsp/at32/at32f435-start/project.uvproj
+++ b/bsp/at32/at32f435-start/project.uvproj
--- a/bsp/at32/at32f435-start/project.uvprojx
+++ b/bsp/at32/at32f435-start/project.uvprojx
--- a/bsp/at32/at32f435-start/rtconfig.h
+++ b/bsp/at32/at32f435-start/rtconfig.h
@@ -0,0 +1,181 @@
+#ifndef RT_CONFIG_H__
+#define RT_CONFIG_H__
+
+/* Automatically generated file; DO NOT EDIT. */
+/* RT-Thread Configuration */
+
+/* RT-Thread Kernel */
+
+#define RT_NAME_MAX 8
+#define RT_ALIGN_SIZE 4
+#define RT_THREAD_PRIORITY_32
+#define RT_THREAD_PRIORITY_MAX 32
+#define RT_TICK_PER_SECOND 1000
+#define RT_USING_OVERFLOW_CHECK
+#define RT_USING_HOOK
+#define RT_HOOK_USING_FUNC_PTR
+#define RT_USING_IDLE_HOOK
+#define RT_IDLE_HOOK_LIST_SIZE 4
+#define IDLE_THREAD_STACK_SIZE 256
+#define RT_USING_TIMER_SOFT
+#define RT_TIMER_THREAD_PRIO 4
+#define RT_TIMER_THREAD_STACK_SIZE 512
+
+/* kservice optimization */
+
+#define RT_DEBUG
+#define RT_DEBUG_COLOR
+
+/* Inter-Thread communication */
+
+#define RT_USING_SEMAPHORE
+#define RT_USING_MUTEX
+#define RT_USING_EVENT
+#define RT_USING_MAILBOX
+#define RT_USING_MESSAGEQUEUE
+
+/* Memory Management */
+
+#define RT_USING_MEMPOOL
+#define RT_USING_SMALL_MEM
+#define RT_USING_MEMHEAP
+#define RT_MEMHEAP_FAST_MODE
+#define RT_USING_MEMHEAP_AS_HEAP
+#define RT_USING_MEMHEAP_AUTO_BINDING
+#define RT_USING_HEAP
+
+/* Kernel Device Object */
+
+#define RT_USING_DEVICE
+#define RT_USING_CONSOLE
+#define RT_CONSOLEBUF_SIZE 128
+#define RT_CONSOLE_DEVICE_NAME "uart1"
+#define RT_VER_NUM 0x40100
+#define ARCH_ARM
+#define RT_USING_CPU_FFS
+#define ARCH_ARM_CORTEX_M
+#define ARCH_ARM_CORTEX_M4
+
+/* RT-Thread Components */
+
+#define RT_USING_COMPONENTS_INIT
+#define RT_USING_USER_MAIN
+#define RT_MAIN_THREAD_STACK_SIZE 2048
+#define RT_MAIN_THREAD_PRIORITY 10
+
+/* C++ features */
+
+
+/* Command shell */
+
+#define RT_USING_FINSH
+#define RT_USING_MSH
+#define FINSH_USING_MSH
+#define FINSH_THREAD_NAME "tshell"
+#define FINSH_THREAD_PRIORITY 20
+#define FINSH_THREAD_STACK_SIZE 4096
+#define FINSH_USING_HISTORY
+#define FINSH_HISTORY_LINES 5
+#define FINSH_USING_SYMTAB
+#define FINSH_CMD_SIZE 80
+#define MSH_USING_BUILT_IN_COMMANDS
+#define FINSH_USING_DESCRIPTION
+#define FINSH_ARG_MAX 10
+
+/* Device virtual file system */
+
+
+/* Device Drivers */
+
+#define RT_USING_DEVICE_IPC
+#define RT_USING_SERIAL
+#define RT_USING_SERIAL_V1
+#define RT_SERIAL_RB_BUFSZ 64
+#define RT_USING_PIN
+
+/* Using USB */
+
+
+/* POSIX layer and C standard library */
+
+#define RT_LIBC_DEFAULT_TIMEZONE 8
+
+/* POSIX (Portable Operating System Interface) layer */
+
+
+/* Interprocess Communication (IPC) */
+
+
+/* Socket is in the 'Network' category */
+
+/* Network */
+
+
+/* VBUS(Virtual Software BUS) */
+
+
+/* Utilities */
+
+
+/* RT-Thread Utestcases */
+
+
+/* RT-Thread online packages */
+
+/* IoT - internet of things */
+
+
+/* Wi-Fi */
+
+/* Marvell WiFi */
+
+
+/* Wiced WiFi */
+
+
+/* IoT Cloud */
+
+
+/* security packages */
+
+
+/* language packages */
+
+
+/* multimedia packages */
+
+
+/* tools packages */
+
+
+/* system packages */
+
+
+/* peripheral libraries and drivers */
+
+
+/* miscellaneous packages */
+
+
+/* samples: kernel and components samples */
+
+#define SOC_FAMILY_AT32
+#define SOC_SERIES_AT32F435
+
+/* Hardware Drivers Config */
+
+#define SOC_AT32F435ZMT7
+
+/* Onboard Peripheral Drivers */
+
+#define BSP_USING_SERIAL
+
+/* On-chip Peripheral Drivers */
+
+#define BSP_USING_GPIO
+#define BSP_USING_UART
+#define BSP_USING_UART1
+#define BSP_USING_UART2
+#define BSP_USING_UART3
+
+#endif
--- a/bsp/at32/at32f435-start/rtconfig.py
+++ b/bsp/at32/at32f435-start/rtconfig.py
@@ -0,0 +1,150 @@
+import os
+
+# toolchains options
+ARCH='arm'
+CPU='cortex-m4'
+CROSS_TOOL='gcc'
+
+# bsp lib config
+BSP_LIBRARY_TYPE = None
+
+if os.getenv('RTT_CC'):
+    CROSS_TOOL = os.getenv('RTT_CC')
+if os.getenv('RTT_ROOT'):
+    RTT_ROOT = os.getenv('RTT_ROOT')
+
+# cross_tool provides the cross compiler
+# EXEC_PATH is the compiler execute path, for example, CodeSourcery, Keil MDK, IAR
+if  CROSS_TOOL == 'gcc':
+    PLATFORM    = 'gcc'
+    EXEC_PATH   = r'C:\Users\XXYYZZ'
+elif CROSS_TOOL == 'keil':
+    PLATFORM    = 'armcc'
+    EXEC_PATH   = r'C:/Keil_v5'
+elif CROSS_TOOL == 'iar':
+    PLATFORM    = 'iar'
+    EXEC_PATH   = r'C:/Program Files (x86)/IAR Systems/Embedded Workbench 8.0'
+
+if os.getenv('RTT_EXEC_PATH'):
+    EXEC_PATH = os.getenv('RTT_EXEC_PATH')
+
+BUILD = 'debug'
+
+if PLATFORM == 'gcc':
+    # toolchains
+    PREFIX = 'arm-none-eabi-'
+    CC = PREFIX + 'gcc'
+    AS = PREFIX + 'gcc'
+    AR = PREFIX + 'ar'
+    CXX = PREFIX + 'g++'
+    LINK = PREFIX + 'gcc'
+    TARGET_EXT = 'elf'
+    SIZE = PREFIX + 'size'
+    OBJDUMP = PREFIX + 'objdump'
+    OBJCPY = PREFIX + 'objcopy'
+
+    DEVICE = ' -mcpu=cortex-m4 -mthumb -mfpu=fpv4-sp-d16 -mfloat-abi=hard -ffunction-sections -fdata-sections'
+    CFLAGS = DEVICE + ' -Dgcc'
+    AFLAGS = ' -c' + DEVICE + ' -x assembler-with-cpp -Wa,-mimplicit-it=thumb '
+    LFLAGS = DEVICE + ' -Wl,--gc-sections,-Map=rt-thread.map,-cref,-u,Reset_Handler -T board/linker_scripts/link.lds'
+
+    CPATH = ''
+    LPATH = ''
+
+    if BUILD == 'debug':
+        CFLAGS += ' -O0 -gdwarf-2 -g'
+        AFLAGS += ' -gdwarf-2'
+    else:
+        CFLAGS += ' -O2'
+
+    CXXFLAGS = CFLAGS
+
+    POST_ACTION = OBJCPY + ' -O binary $TARGET rtthread.bin\n' + SIZE + ' $TARGET \n'
+
+elif PLATFORM == 'armcc':
+    # toolchains
+    CC = 'armcc'
+    CXX = 'armcc'
+    AS = 'armasm'
+    AR = 'armar'
+    LINK = 'armlink'
+    TARGET_EXT = 'axf'
+
+    DEVICE = ' --cpu Cortex-M4.fp '
+    CFLAGS = '-c ' + DEVICE + ' --apcs=interwork --c99'
+    AFLAGS = DEVICE + ' --apcs=interwork '
+    LFLAGS = DEVICE + ' --scatter "board\linker_scripts\link.sct" --info sizes --info totals --info unused --info veneers --list rt-thread.map --strict'
+    CFLAGS += ' -I' + EXEC_PATH + '/ARM/ARMCC/include'
+    LFLAGS += ' --libpath=' + EXEC_PATH + '/ARM/ARMCC/lib'
+
+    CFLAGS += ' -D__MICROLIB '
+    AFLAGS += ' --pd "__MICROLIB SETA 1" '
+    LFLAGS += ' --library_type=microlib '
+    EXEC_PATH += '/ARM/ARMCC/bin/'
+
+    if BUILD == 'debug':
+        CFLAGS += ' -g -O0'
+        AFLAGS += ' -g'
+    else:
+        CFLAGS += ' -O2'
+
+    CXXFLAGS = CFLAGS
+    CFLAGS += ' -std=c99'
+
+    POST_ACTION = 'fromelf --bin $TARGET --output rtthread.bin \nfromelf -z $TARGET'
+
+elif PLATFORM == 'iar':
+    # toolchains
+    CC = 'iccarm'
+    CXX = 'iccarm'
+    AS = 'iasmarm'
+    AR = 'iarchive'
+    LINK = 'ilinkarm'
+    TARGET_EXT = 'out'
+
+    DEVICE = '-Dewarm'
+
+    CFLAGS = DEVICE
+    CFLAGS += ' --diag_suppress Pa050'
+    CFLAGS += ' --no_cse'
+    CFLAGS += ' --no_unroll'
+    CFLAGS += ' --no_inline'
+    CFLAGS += ' --no_code_motion'
+    CFLAGS += ' --no_tbaa'
+    CFLAGS += ' --no_clustering'
+    CFLAGS += ' --no_scheduling'
+    CFLAGS += ' --endian=little'
+    CFLAGS += ' --cpu=Cortex-M4'
+    CFLAGS += ' -e'
+    CFLAGS += ' --fpu=VFPv4_sp'
+    CFLAGS += ' --dlib_config "' + EXEC_PATH + '/arm/INC/c/DLib_Config_Normal.h"'
+    CFLAGS += ' --silent'
+
+    AFLAGS = DEVICE
+    AFLAGS += ' -s+'
+    AFLAGS += ' -w+'
+    AFLAGS += ' -r'
+    AFLAGS += ' --cpu Cortex-M4'
+    AFLAGS += ' --fpu VFPv4_sp'
+    AFLAGS += ' -S'
+
+    if BUILD == 'debug':
+        CFLAGS += ' --debug'
+        CFLAGS += ' -On'
+    else:
+        CFLAGS += ' -Oh'
+
+    LFLAGS = ' --config "board/linker_scripts/link.icf"'
+    LFLAGS += ' --entry __iar_program_start'
+
+    CXXFLAGS = CFLAGS
+
+    EXEC_PATH = EXEC_PATH + '/arm/bin/'
+    POST_ACTION = 'ielftool --bin $TARGET rtthread.bin'
+
+def dist_handle(BSP_ROOT, dist_dir):
+    import sys
+    cwd_path = os.getcwd()
+    sys.path.append(os.path.join(os.path.dirname(BSP_ROOT), 'tools'))
+    from sdk_dist import dist_do_building
+    dist_do_building(BSP_ROOT, dist_dir)
--- a/bsp/at32/at32f435-start/template.ewp
+++ b/bsp/at32/at32f435-start/template.ewp
--- a/bsp/at32/at32f435-start/template.eww
+++ b/bsp/at32/at32f435-start/template.eww
@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="iso-8859-1"?>
+
+<workspace>
+  <project>
+    <path>$WS_DIR$\template.ewp</path>
+  </project>
+  <batchBuild/>
+</workspace>
+
+
--- a/bsp/at32/at32f435-start/template.uvopt
+++ b/bsp/at32/at32f435-start/template.uvopt
@@ -0,0 +1,167 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no" ?>
+<ProjectOpt xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="project_opt.xsd">
+
+  <SchemaVersion>1.0</SchemaVersion>
+
+  <Header>### uVision Project, (C) Keil Software</Header>
+
+  <Extensions>
+    <cExt>*.c</cExt>
+    <aExt>*.s*; *.src; *.a*</aExt>
+    <oExt>*.obj</oExt>
+    <lExt>*.lib</lExt>
+    <tExt>*.txt; *.h; *.inc; *.md</tExt>
+    <pExt>*.plm</pExt>
+    <CppX>*.cpp</CppX>
+  </Extensions>
+
+  <DaveTm>
+    <dwLowDateTime>0</dwLowDateTime>
+    <dwHighDateTime>0</dwHighDateTime>
+  </DaveTm>
+
+  <Target>
+    <TargetName>rt-thread</TargetName>
+    <ToolsetNumber>0x4</ToolsetNumber>
+    <ToolsetName>ARM-ADS</ToolsetName>
+    <TargetOption>
+      <CLKADS>8000000</CLKADS>
+      <OPTTT>
+        <gFlags>1</gFlags>
+        <BeepAtEnd>1</BeepAtEnd>
+        <RunSim>1</RunSim>
+        <RunTarget>0</RunTarget>
+      </OPTTT>
+      <OPTHX>
+        <HexSelection>1</HexSelection>
+        <FlashByte>65535</FlashByte>
+        <HexRangeLowAddress>0</HexRangeLowAddress>
+        <HexRangeHighAddress>0</HexRangeHighAddress>
+        <HexOffset>0</HexOffset>
+      </OPTHX>
+      <OPTLEX>
+        <PageWidth>79</PageWidth>
+        <PageLength>66</PageLength>
+        <TabStop>8</TabStop>
+        <ListingPath>.\build\keil\List\</ListingPath>
+      </OPTLEX>
+      <ListingPage>
+        <CreateCListing>1</CreateCListing>
+        <CreateAListing>1</CreateAListing>
+        <CreateLListing>1</CreateLListing>
+        <CreateIListing>0</CreateIListing>
+        <AsmCond>1</AsmCond>
+        <AsmSymb>1</AsmSymb>
+        <AsmXref>0</AsmXref>
+        <CCond>1</CCond>
+        <CCode>0</CCode>
+        <CListInc>0</CListInc>
+        <CSymb>0</CSymb>
+        <LinkerCodeListing>0</LinkerCodeListing>
+      </ListingPage>
+      <OPTXL>
+        <LMap>1</LMap>
+        <LComments>1</LComments>
+        <LGenerateSymbols>1</LGenerateSymbols>
+        <LLibSym>1</LLibSym>
+        <LLines>1</LLines>
+        <LLocSym>1</LLocSym>
+        <LPubSym>1</LPubSym>
+        <LXref>0</LXref>
+        <LExpSel>0</LExpSel>
+      </OPTXL>
+      <OPTFL>
+        <tvExp>0</tvExp>
+        <tvExpOptDlg>0</tvExpOptDlg>
+        <IsCurrentTarget>1</IsCurrentTarget>
+      </OPTFL>
+      <CpuCode>0</CpuCode>
+      <DebugOpt>
+        <uSim>0</uSim>
+        <uTrg>1</uTrg>
+        <sLdApp>1</sLdApp>
+        <sGomain>1</sGomain>
+        <sRbreak>1</sRbreak>
+        <sRwatch>1</sRwatch>
+        <sRmem>1</sRmem>
+        <sRfunc>1</sRfunc>
+        <sRbox>1</sRbox>
+        <tLdApp>1</tLdApp>
+        <tGomain>1</tGomain>
+        <tRbreak>1</tRbreak>
+        <tRwatch>1</tRwatch>
+        <tRmem>1</tRmem>
+        <tRfunc>0</tRfunc>
+        <tRbox>1</tRbox>
+        <tRtrace>0</tRtrace>
+        <sRSysVw>1</sRSysVw>
+        <tRSysVw>1</tRSysVw>
+        <tPdscDbg>0</tPdscDbg>
+        <sRunDeb>0</sRunDeb>
+        <sLrtime>0</sLrtime>
+        <nTsel>12</nTsel>
+        <sDll></sDll>
+        <sDllPa></sDllPa>
+        <sDlgDll></sDlgDll>
+        <sDlgPa></sDlgPa>
+        <sIfile></sIfile>
+        <tDll></tDll>
+        <tDllPa></tDllPa>
+        <tDlgDll></tDlgDll>
+        <tDlgPa></tDlgPa>
+        <tIfile></tIfile>
+        <pMon>BIN\CMSIS_AGDI.dll</pMon>
+      </DebugOpt>
+      <TargetDriverDllRegistry>
+        <SetRegEntry>
+          <Number>0</Number>
+          <Key>CMSIS_AGDI</Key>
+          <Name>-X"AT-Link-EZ-CMSIS-DAP" -U3B69593300C0636C0A978402 -O78 -S0 -C0 -P00 -N00("ARM CoreSight SW-DP") -D00(2BA01477) -L00(0) -FO7 -FD20000000 -FC800 -FN1 -FF0AT32F435_4032 -FS08000000 -FL03F0000</Name>
+        </SetRegEntry>
+        <SetRegEntry>
+          <Number>0</Number>
+          <Key>JL2CM3</Key>
+          <Name>-U788529815 -O78 -S0 -A0 -C0 -JU1 -JI127.0.0.1 -JP0 -RST0 -N00("ARM CoreSight SW-DP") -D00(2BA01477) -L00(4) -TO18 -TC10000000 -TP21 -TDS8007 -TDT0 -TDC1F -TIEFFFFFFFF -TIP8 -TB1 -TFE0 -FO15 -FD20000000 -FC800 -FN1 -FF0AT32F403A_1024 -FS08000000 -FL0100000</Name>
+        </SetRegEntry>
+        <SetRegEntry>
+          <Number>0</Number>
+          <Key>UL2CM3</Key>
+          <Name>UL2CM3(-O14 -S0 -C0 -N00("ARM Cortex-M3") -D00(1BA00477) -L00(4) -FO7  -FN1 -FC1000 -FD20000000 -FF0AT32F435_4032 -FL400000 -FS08000000</Name>
+        </SetRegEntry>
+      </TargetDriverDllRegistry>
+      <Breakpoint/>
+      <Tracepoint>
+        <THDelay>0</THDelay>
+      </Tracepoint>
+      <DebugFlag>
+        <trace>0</trace>
+        <periodic>0</periodic>
+        <aLwin>0</aLwin>
+        <aCover>0</aCover>
+        <aSer1>0</aSer1>
+        <aSer2>0</aSer2>
+        <aPa>0</aPa>
+        <viewmode>0</viewmode>
+        <vrSel>0</vrSel>
+        <aSym>0</aSym>
+        <aTbox>0</aTbox>
+        <AscS1>0</AscS1>
+        <AscS2>0</AscS2>
+        <AscS3>0</AscS3>
+        <aSer3>0</aSer3>
+        <eProf>0</eProf>
+        <aLa>0</aLa>
+        <aPa1>0</aPa1>
+        <AscS4>0</AscS4>
+        <aSer4>0</aSer4>
+        <StkLoc>0</StkLoc>
+        <TrcWin>0</TrcWin>
+        <newCpu>1</newCpu>
+        <uProt>0</uProt>
+      </DebugFlag>
+      <LintExecutable></LintExecutable>
+      <LintConfigFile></LintConfigFile>
+    </TargetOption>
+  </Target>
+
+</ProjectOpt>
--- a/bsp/at32/at32f435-start/template.uvoptx
+++ b/bsp/at32/at32f435-start/template.uvoptx
@@ -0,0 +1,185 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no" ?>
+<ProjectOpt xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="project_optx.xsd">
+
+  <SchemaVersion>1.0</SchemaVersion>
+
+  <Header>### uVision Project, (C) Keil Software</Header>
+
+  <Extensions>
+    <cExt>*.c</cExt>
+    <aExt>*.s*; *.src; *.a*</aExt>
+    <oExt>*.obj; *.o</oExt>
+    <lExt>*.lib</lExt>
+    <tExt>*.txt; *.h; *.inc; *.md</tExt>
+    <pExt>*.plm</pExt>
+    <CppX>*.cpp</CppX>
+    <nMigrate>0</nMigrate>
+  </Extensions>
+
+  <DaveTm>
+    <dwLowDateTime>0</dwLowDateTime>
+    <dwHighDateTime>0</dwHighDateTime>
+  </DaveTm>
+
+  <Target>
+    <TargetName>rt-thread</TargetName>
+    <ToolsetNumber>0x4</ToolsetNumber>
+    <ToolsetName>ARM-ADS</ToolsetName>
+    <TargetOption>
+      <CLKADS>12000000</CLKADS>
+      <OPTTT>
+        <gFlags>1</gFlags>
+        <BeepAtEnd>1</BeepAtEnd>
+        <RunSim>0</RunSim>
+        <RunTarget>1</RunTarget>
+        <RunAbUc>0</RunAbUc>
+      </OPTTT>
+      <OPTHX>
+        <HexSelection>1</HexSelection>
+        <FlashByte>65535</FlashByte>
+        <HexRangeLowAddress>0</HexRangeLowAddress>
+        <HexRangeHighAddress>0</HexRangeHighAddress>
+        <HexOffset>0</HexOffset>
+      </OPTHX>
+      <OPTLEX>
+        <PageWidth>79</PageWidth>
+        <PageLength>66</PageLength>
+        <TabStop>8</TabStop>
+        <ListingPath>.\build\keil\List\</ListingPath>
+      </OPTLEX>
+      <ListingPage>
+        <CreateCListing>1</CreateCListing>
+        <CreateAListing>1</CreateAListing>
+        <CreateLListing>1</CreateLListing>
+        <CreateIListing>0</CreateIListing>
+        <AsmCond>1</AsmCond>
+        <AsmSymb>1</AsmSymb>
+        <AsmXref>0</AsmXref>
+        <CCond>1</CCond>
+        <CCode>0</CCode>
+        <CListInc>0</CListInc>
+        <CSymb>0</CSymb>
+        <LinkerCodeListing>0</LinkerCodeListing>
+      </ListingPage>
+      <OPTXL>
+        <LMap>1</LMap>
+        <LComments>1</LComments>
+        <LGenerateSymbols>1</LGenerateSymbols>
+        <LLibSym>1</LLibSym>
+        <LLines>1</LLines>
+        <LLocSym>1</LLocSym>
+        <LPubSym>1</LPubSym>
+        <LXref>0</LXref>
+        <LExpSel>0</LExpSel>
+      </OPTXL>
+      <OPTFL>
+        <tvExp>1</tvExp>
+        <tvExpOptDlg>0</tvExpOptDlg>
+        <IsCurrentTarget>1</IsCurrentTarget>
+      </OPTFL>
+      <CpuCode>255</CpuCode>
+      <DebugOpt>
+        <uSim>0</uSim>
+        <uTrg>1</uTrg>
+        <sLdApp>1</sLdApp>
+        <sGomain>1</sGomain>
+        <sRbreak>1</sRbreak>
+        <sRwatch>1</sRwatch>
+        <sRmem>1</sRmem>
+        <sRfunc>1</sRfunc>
+        <sRbox>1</sRbox>
+        <tLdApp>1</tLdApp>
+        <tGomain>1</tGomain>
+        <tRbreak>1</tRbreak>
+        <tRwatch>1</tRwatch>
+        <tRmem>1</tRmem>
+        <tRfunc>0</tRfunc>
+        <tRbox>1</tRbox>
+        <tRtrace>1</tRtrace>
+        <sRSysVw>1</sRSysVw>
+        <tRSysVw>1</tRSysVw>
+        <sRunDeb>0</sRunDeb>
+        <sLrtime>0</sLrtime>
+        <bEvRecOn>1</bEvRecOn>
+        <bSchkAxf>0</bSchkAxf>
+        <bTchkAxf>0</bTchkAxf>
+        <nTsel>3</nTsel>
+        <sDll></sDll>
+        <sDllPa></sDllPa>
+        <sDlgDll></sDlgDll>
+        <sDlgPa></sDlgPa>
+        <sIfile></sIfile>
+        <tDll></tDll>
+        <tDllPa></tDllPa>
+        <tDlgDll></tDlgDll>
+        <tDlgPa></tDlgPa>
+        <tIfile></tIfile>
+        <pMon>BIN\CMSIS_AGDI.dll</pMon>
+      </DebugOpt>
+      <TargetDriverDllRegistry>
+        <SetRegEntry>
+          <Number>0</Number>
+          <Key>UL2CM3</Key>
+          <Name>UL2CM3(-S0 -C0 -P0 )  -FN1 -FC1000 -FD20000000 -FF0AT32F435_4032 -FL03F0000 -FS08000000 -FP0($$Device:-AT32F435ZMT7$Flash\AT32F435_4032.FLM)</Name>
+        </SetRegEntry>
+        <SetRegEntry>
+          <Number>0</Number>
+          <Key>CMSIS_AGDI</Key>
+          <Name>-X"Any" -UAny -O206 -S0 -C0 -P00000000 -N00("ARM CoreSight SW-DP") -D00(2BA01477) -L00(0) -TO65554 -TC10000000 -TT10000000 -TP20 -TDS8007 -TDT0 -TDC1F -TIEFFFFFFFF -TIP8 -FO7 -FD20000000 -FC1000 -FN1 -FF0AT32F435_4032.FLM -FS08000000 -FL03F0000 -FP0($$Device:-AT32F435ZMT7$Flash\AT32F435_4032.FLM)</Name>
+        </SetRegEntry>
+      </TargetDriverDllRegistry>
+      <Breakpoint/>
+      <Tracepoint>
+        <THDelay>0</THDelay>
+      </Tracepoint>
+      <DebugFlag>
+        <trace>0</trace>
+        <periodic>0</periodic>
+        <aLwin>0</aLwin>
+        <aCover>0</aCover>
+        <aSer1>0</aSer1>
+        <aSer2>0</aSer2>
+        <aPa>0</aPa>
+        <viewmode>0</viewmode>
+        <vrSel>0</vrSel>
+        <aSym>0</aSym>
+        <aTbox>0</aTbox>
+        <AscS1>0</AscS1>
+        <AscS2>0</AscS2>
+        <AscS3>0</AscS3>
+        <aSer3>0</aSer3>
+        <eProf>0</eProf>
+        <aLa>0</aLa>
+        <aPa1>0</aPa1>
+        <AscS4>0</AscS4>
+        <aSer4>0</aSer4>
+        <StkLoc>0</StkLoc>
+        <TrcWin>0</TrcWin>
+        <newCpu>0</newCpu>
+        <uProt>0</uProt>
+      </DebugFlag>
+      <LintExecutable></LintExecutable>
+      <LintConfigFile></LintConfigFile>
+      <bLintAuto>0</bLintAuto>
+      <bAutoGenD>0</bAutoGenD>
+      <LntExFlags>0</LntExFlags>
+      <pMisraName></pMisraName>
+      <pszMrule></pszMrule>
+      <pSingCmds></pSingCmds>
+      <pMultCmds></pMultCmds>
+      <pMisraNamep></pMisraNamep>
+      <pszMrulep></pszMrulep>
+      <pSingCmdsp></pSingCmdsp>
+      <pMultCmdsp></pMultCmdsp>
+    </TargetOption>
+  </Target>
+
+  <Group>
+    <GroupName>Source Group 1</GroupName>
+    <tvExp>0</tvExp>
+    <tvExpOptDlg>0</tvExpOptDlg>
+    <cbSel>0</cbSel>
+    <RteFlg>0</RteFlg>
+  </Group>
+
+</ProjectOpt>
--- a/bsp/at32/at32f435-start/template.uvproj
+++ b/bsp/at32/at32f435-start/template.uvproj
@@ -0,0 +1,407 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no" ?>
+<Project xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="project_proj.xsd">
+
+  <SchemaVersion>1.1</SchemaVersion>
+
+  <Header>### uVision Project, (C) Keil Software</Header>
+
+  <Targets>
+    <Target>
+      <TargetName>rt-thread</TargetName>
+      <ToolsetNumber>0x4</ToolsetNumber>
+      <ToolsetName>ARM-ADS</ToolsetName>
+      <TargetOption>
+        <TargetCommonOption>
+          <Device>-AT32F435ZMT7</Device>
+          <Vendor>ArteryTek</Vendor>
+          <Cpu>IRAM(0x20000000-0x2007FFFF) IROM(0x08000000-0x083EFFFF) CLOCK(8000000) CPUTYPE("Cortex-M4") FPU2</Cpu>
+          <FlashUtilSpec></FlashUtilSpec>
+          <StartupFile>"Startup\ArteryTek\AT32F435_437\startup_at32f435_f437.s" ("AT32F435_437 Startup Code")</StartupFile>
+          <FlashDriverDll>UL2CM3(-O207 -S0 -C0 -FO7 -FD20000000 -FC1000 -FN1 -FF0AT32F435_4032 -FS08000000 -FL400000)</FlashDriverDll>
+          <DeviceId>0</DeviceId>
+          <RegisterFile>at32f435_437.h</RegisterFile>
+          <MemoryEnv></MemoryEnv>
+          <Cmp></Cmp>
+          <Asm></Asm>
+          <Linker></Linker>
+          <OHString></OHString>
+          <InfinionOptionDll></InfinionOptionDll>
+          <SLE66CMisc></SLE66CMisc>
+          <SLE66AMisc></SLE66AMisc>
+          <SLE66LinkerMisc></SLE66LinkerMisc>
+          <SFDFile>SFD\ArteryTek\AT32F435\AT32F435xx_v2.SFR</SFDFile>
+          <bCustSvd>0</bCustSvd>
+          <UseEnv>0</UseEnv>
+          <BinPath></BinPath>
+          <IncludePath></IncludePath>
+          <LibPath></LibPath>
+          <RegisterFilePath>ArteryTek\AT32F435_437\</RegisterFilePath>
+          <DBRegisterFilePath>ArteryTek\AT32F435_437\</DBRegisterFilePath>
+          <TargetStatus>
+            <Error>0</Error>
+            <ExitCodeStop>0</ExitCodeStop>
+            <ButtonStop>0</ButtonStop>
+            <NotGenerated>0</NotGenerated>
+            <InvalidFlash>1</InvalidFlash>
+          </TargetStatus>
+          <OutputDirectory>.\build\keil\Obj\</OutputDirectory>
+          <OutputName>rt-thread</OutputName>
+          <CreateExecutable>1</CreateExecutable>
+          <CreateLib>0</CreateLib>
+          <CreateHexFile>0</CreateHexFile>
+          <DebugInformation>1</DebugInformation>
+          <BrowseInformation>0</BrowseInformation>
+          <ListingPath>.\build\keil\List\</ListingPath>
+          <HexFormatSelection>1</HexFormatSelection>
+          <Merge32K>0</Merge32K>
+          <CreateBatchFile>0</CreateBatchFile>
+          <BeforeCompile>
+            <RunUserProg1>0</RunUserProg1>
+            <RunUserProg2>0</RunUserProg2>
+            <UserProg1Name></UserProg1Name>
+            <UserProg2Name></UserProg2Name>
+            <UserProg1Dos16Mode>0</UserProg1Dos16Mode>
+            <UserProg2Dos16Mode>0</UserProg2Dos16Mode>
+            <nStopU1X>0</nStopU1X>
+            <nStopU2X>0</nStopU2X>
+          </BeforeCompile>
+          <BeforeMake>
+            <RunUserProg1>0</RunUserProg1>
+            <RunUserProg2>0</RunUserProg2>
+            <UserProg1Name></UserProg1Name>
+            <UserProg2Name></UserProg2Name>
+            <UserProg1Dos16Mode>0</UserProg1Dos16Mode>
+            <UserProg2Dos16Mode>0</UserProg2Dos16Mode>
+          </BeforeMake>
+          <AfterMake>
+            <RunUserProg1>1</RunUserProg1>
+            <RunUserProg2>0</RunUserProg2>
+            <UserProg1Name>fromelf --bin !L --output rtthread.bin</UserProg1Name>
+            <UserProg2Name></UserProg2Name>
+            <UserProg1Dos16Mode>0</UserProg1Dos16Mode>
+            <UserProg2Dos16Mode>0</UserProg2Dos16Mode>
+          </AfterMake>
+          <SelectedForBatchBuild>0</SelectedForBatchBuild>
+          <SVCSIdString></SVCSIdString>
+        </TargetCommonOption>
+        <CommonProperty>
+          <UseCPPCompiler>0</UseCPPCompiler>
+          <RVCTCodeConst>0</RVCTCodeConst>
+          <RVCTZI>0</RVCTZI>
+          <RVCTOtherData>0</RVCTOtherData>
+          <ModuleSelection>0</ModuleSelection>
+          <IncludeInBuild>1</IncludeInBuild>
+          <AlwaysBuild>0</AlwaysBuild>
+          <GenerateAssemblyFile>0</GenerateAssemblyFile>
+          <AssembleAssemblyFile>0</AssembleAssemblyFile>
+          <PublicsOnly>0</PublicsOnly>
+          <StopOnExitCode>3</StopOnExitCode>
+          <CustomArgument></CustomArgument>
+          <IncludeLibraryModules></IncludeLibraryModules>
+          <ComprImg>1</ComprImg>
+        </CommonProperty>
+        <DllOption>
+          <SimDllName>SARMCM3.DLL</SimDllName>
+          <SimDllArguments> -REMAP</SimDllArguments>
+          <SimDlgDll>DCM.DLL</SimDlgDll>
+          <SimDlgDllArguments>-pCM4</SimDlgDllArguments>
+          <TargetDllName>SARMCM3.DLL</TargetDllName>
+          <TargetDllArguments></TargetDllArguments>
+          <TargetDlgDll>TCM.DLL</TargetDlgDll>
+          <TargetDlgDllArguments>-pCM4</TargetDlgDllArguments>
+        </DllOption>
+        <DebugOption>
+          <OPTHX>
+            <HexSelection>1</HexSelection>
+            <HexRangeLowAddress>0</HexRangeLowAddress>
+            <HexRangeHighAddress>0</HexRangeHighAddress>
+            <HexOffset>0</HexOffset>
+            <Oh166RecLen>16</Oh166RecLen>
+          </OPTHX>
+          <Simulator>
+            <UseSimulator>0</UseSimulator>
+            <LoadApplicationAtStartup>1</LoadApplicationAtStartup>
+            <RunToMain>1</RunToMain>
+            <RestoreBreakpoints>1</RestoreBreakpoints>
+            <RestoreWatchpoints>1</RestoreWatchpoints>
+            <RestoreMemoryDisplay>1</RestoreMemoryDisplay>
+            <RestoreFunctions>1</RestoreFunctions>
+            <RestoreToolbox>1</RestoreToolbox>
+            <LimitSpeedToRealTime>0</LimitSpeedToRealTime>
+            <RestoreSysVw>1</RestoreSysVw>
+          </Simulator>
+          <Target>
+            <UseTarget>1</UseTarget>
+            <LoadApplicationAtStartup>1</LoadApplicationAtStartup>
+            <RunToMain>1</RunToMain>
+            <RestoreBreakpoints>1</RestoreBreakpoints>
+            <RestoreWatchpoints>1</RestoreWatchpoints>
+            <RestoreMemoryDisplay>1</RestoreMemoryDisplay>
+            <RestoreFunctions>0</RestoreFunctions>
+            <RestoreToolbox>1</RestoreToolbox>
+            <RestoreTracepoints>0</RestoreTracepoints>
+            <RestoreSysVw>1</RestoreSysVw>
+            <UsePdscDebugDescription>0</UsePdscDebugDescription>
+          </Target>
+          <RunDebugAfterBuild>0</RunDebugAfterBuild>
+          <TargetSelection>12</TargetSelection>
+          <SimDlls>
+            <CpuDll></CpuDll>
+            <CpuDllArguments></CpuDllArguments>
+            <PeripheralDll></PeripheralDll>
+            <PeripheralDllArguments></PeripheralDllArguments>
+            <InitializationFile></InitializationFile>
+          </SimDlls>
+          <TargetDlls>
+            <CpuDll></CpuDll>
+            <CpuDllArguments></CpuDllArguments>
+            <PeripheralDll></PeripheralDll>
+            <PeripheralDllArguments></PeripheralDllArguments>
+            <InitializationFile></InitializationFile>
+            <Driver>BIN\CMSIS_AGDI.dll</Driver>
+          </TargetDlls>
+        </DebugOption>
+        <Utilities>
+          <Flash1>
+            <UseTargetDll>1</UseTargetDll>
+            <UseExternalTool>0</UseExternalTool>
+            <RunIndependent>0</RunIndependent>
+            <UpdateFlashBeforeDebugging>1</UpdateFlashBeforeDebugging>
+            <Capability>1</Capability>
+            <DriverSelection>4099</DriverSelection>
+          </Flash1>
+          <bUseTDR>1</bUseTDR>
+          <Flash2>BIN\UL2CM3.DLL</Flash2>
+          <Flash3></Flash3>
+          <Flash4></Flash4>
+          <pFcarmOut></pFcarmOut>
+          <pFcarmGrp></pFcarmGrp>
+          <pFcArmRoot></pFcArmRoot>
+          <FcArmLst>0</FcArmLst>
+        </Utilities>
+        <TargetArmAds>
+          <ArmAdsMisc>
+            <GenerateListings>0</GenerateListings>
+            <asHll>1</asHll>
+            <asAsm>1</asAsm>
+            <asMacX>1</asMacX>
+            <asSyms>1</asSyms>
+            <asFals>1</asFals>
+            <asDbgD>1</asDbgD>
+            <asForm>1</asForm>
+            <ldLst>0</ldLst>
+            <ldmm>1</ldmm>
+            <ldXref>1</ldXref>
+            <BigEnd>0</BigEnd>
+            <AdsALst>1</AdsALst>
+            <AdsACrf>1</AdsACrf>
+            <AdsANop>0</AdsANop>
+            <AdsANot>0</AdsANot>
+            <AdsLLst>1</AdsLLst>
+            <AdsLmap>1</AdsLmap>
+            <AdsLcgr>1</AdsLcgr>
+            <AdsLsym>1</AdsLsym>
+            <AdsLszi>1</AdsLszi>
+            <AdsLtoi>1</AdsLtoi>
+            <AdsLsun>1</AdsLsun>
+            <AdsLven>1</AdsLven>
+            <AdsLsxf>1</AdsLsxf>
+            <RvctClst>0</RvctClst>
+            <GenPPlst>0</GenPPlst>
+            <AdsCpuType>"Cortex-M4"</AdsCpuType>
+            <RvctDeviceName></RvctDeviceName>
+            <mOS>0</mOS>
+            <uocRom>0</uocRom>
+            <uocRam>0</uocRam>
+            <hadIROM>1</hadIROM>
+            <hadIRAM>1</hadIRAM>
+            <hadXRAM>0</hadXRAM>
+            <uocXRam>0</uocXRam>
+            <RvdsVP>2</RvdsVP>
+            <hadIRAM2>0</hadIRAM2>
+            <hadIROM2>0</hadIROM2>
+            <StupSel>8</StupSel>
+            <useUlib>0</useUlib>
+            <EndSel>0</EndSel>
+            <uLtcg>0</uLtcg>
+            <RoSelD>3</RoSelD>
+            <RwSelD>3</RwSelD>
+            <CodeSel>0</CodeSel>
+            <OptFeed>0</OptFeed>
+            <NoZi1>0</NoZi1>
+            <NoZi2>0</NoZi2>
+            <NoZi3>0</NoZi3>
+            <NoZi4>0</NoZi4>
+            <NoZi5>0</NoZi5>
+            <Ro1Chk>0</Ro1Chk>
+            <Ro2Chk>0</Ro2Chk>
+            <Ro3Chk>0</Ro3Chk>
+            <Ir1Chk>1</Ir1Chk>
+            <Ir2Chk>0</Ir2Chk>
+            <Ra1Chk>0</Ra1Chk>
+            <Ra2Chk>0</Ra2Chk>
+            <Ra3Chk>0</Ra3Chk>
+            <Im1Chk>1</Im1Chk>
+            <Im2Chk>0</Im2Chk>
+            <OnChipMemories>
+              <Ocm1>
+                <Type>0</Type>
+                <StartAddress>0x0</StartAddress>
+                <Size>0x0</Size>
+              </Ocm1>
+              <Ocm2>
+                <Type>0</Type>
+                <StartAddress>0x0</StartAddress>
+                <Size>0x0</Size>
+              </Ocm2>
+              <Ocm3>
+                <Type>0</Type>
+                <StartAddress>0x0</StartAddress>
+                <Size>0x0</Size>
+              </Ocm3>
+              <Ocm4>
+                <Type>0</Type>
+                <StartAddress>0x0</StartAddress>
+                <Size>0x0</Size>
+              </Ocm4>
+              <Ocm5>
+                <Type>0</Type>
+                <StartAddress>0x0</StartAddress>
+                <Size>0x0</Size>
+              </Ocm5>
+              <Ocm6>
+                <Type>0</Type>
+                <StartAddress>0x0</StartAddress>
+                <Size>0x0</Size>
+              </Ocm6>
+              <IRAM>
+                <Type>0</Type>
+                <StartAddress>0x20000000</StartAddress>
+                <Size>0x80000</Size>
+              </IRAM>
+              <IROM>
+                <Type>1</Type>
+                <StartAddress>0x8000000</StartAddress>
+                <Size>0x3f0000</Size>
+              </IROM>
+              <XRAM>
+                <Type>0</Type>
+                <StartAddress>0x0</StartAddress>
+                <Size>0x0</Size>
+              </XRAM>
+              <OCR_RVCT1>
+                <Type>1</Type>
+                <StartAddress>0x0</StartAddress>
+                <Size>0x0</Size>
+              </OCR_RVCT1>
+              <OCR_RVCT2>
+                <Type>1</Type>
+                <StartAddress>0x0</StartAddress>
+                <Size>0x0</Size>
+              </OCR_RVCT2>
+              <OCR_RVCT3>
+                <Type>1</Type>
+                <StartAddress>0x0</StartAddress>
+                <Size>0x0</Size>
+              </OCR_RVCT3>
+              <OCR_RVCT4>
+                <Type>1</Type>
+                <StartAddress>0x8000000</StartAddress>
+                <Size>0x3f0000</Size>
+              </OCR_RVCT4>
+              <OCR_RVCT5>
+                <Type>1</Type>
+                <StartAddress>0x0</StartAddress>
+                <Size>0x0</Size>
+              </OCR_RVCT5>
+              <OCR_RVCT6>
+                <Type>0</Type>
+                <StartAddress>0x0</StartAddress>
+                <Size>0x0</Size>
+              </OCR_RVCT6>
+              <OCR_RVCT7>
+                <Type>0</Type>
+                <StartAddress>0x0</StartAddress>
+                <Size>0x0</Size>
+              </OCR_RVCT7>
+              <OCR_RVCT8>
+                <Type>0</Type>
+                <StartAddress>0x0</StartAddress>
+                <Size>0x0</Size>
+              </OCR_RVCT8>
+              <OCR_RVCT9>
+                <Type>0</Type>
+                <StartAddress>0x20000000</StartAddress>
+                <Size>0x80000</Size>
+              </OCR_RVCT9>
+              <OCR_RVCT10>
+                <Type>0</Type>
+                <StartAddress>0x0</StartAddress>
+                <Size>0x0</Size>
+              </OCR_RVCT10>
+            </OnChipMemories>
+            <RvctStartVector></RvctStartVector>
+          </ArmAdsMisc>
+          <Cads>
+            <interw>1</interw>
+            <Optim>1</Optim>
+            <oTime>0</oTime>
+            <SplitLS>0</SplitLS>
+            <OneElfS>1</OneElfS>
+            <Strict>0</Strict>
+            <EnumInt>0</EnumInt>
+            <PlainCh>0</PlainCh>
+            <Ropi>0</Ropi>
+            <Rwpi>0</Rwpi>
+            <wLevel>0</wLevel>
+            <uThumb>0</uThumb>
+            <uSurpInc>0</uSurpInc>
+            <uC99>1</uC99>
+            <useXO>0</useXO>
+            <VariousControls>
+              <MiscControls></MiscControls>
+              <Define></Define>
+              <Undefine></Undefine>
+              <IncludePath></IncludePath>
+            </VariousControls>
+          </Cads>
+          <Aads>
+            <interw>1</interw>
+            <Ropi>0</Ropi>
+            <Rwpi>0</Rwpi>
+            <thumb>0</thumb>
+            <SplitLS>0</SplitLS>
+            <SwStkChk>0</SwStkChk>
+            <NoWarn>0</NoWarn>
+            <uSurpInc>0</uSurpInc>
+            <useXO>0</useXO>
+            <VariousControls>
+              <MiscControls></MiscControls>
+              <Define></Define>
+              <Undefine></Undefine>
+              <IncludePath></IncludePath>
+            </VariousControls>
+          </Aads>
+          <LDads>
+            <umfTarg>0</umfTarg>
+            <Ropi>0</Ropi>
+            <Rwpi>0</Rwpi>
+            <noStLib>0</noStLib>
+            <RepFail>1</RepFail>
+            <useFile>0</useFile>
+            <TextAddressRange>0x08000000</TextAddressRange>
+            <DataAddressRange>0x20000000</DataAddressRange>
+            <pXoBase></pXoBase>
+            <ScatterFile>.\board\linker_scripts\link.sct</ScatterFile>
+            <IncludeLibs></IncludeLibs>
+            <IncludeLibsPath></IncludeLibsPath>
+            <Misc></Misc>
+            <LinkerInputFile></LinkerInputFile>
+            <DisabledWarnings></DisabledWarnings>
+          </LDads>
+        </TargetArmAds>
+      </TargetOption>
+    </Target>
+  </Targets>
+
+</Project>
--- a/bsp/at32/at32f435-start/template.uvprojx
+++ b/bsp/at32/at32f435-start/template.uvprojx
@@ -0,0 +1,410 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no" ?>
+<Project xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="project_projx.xsd">
+
+  <SchemaVersion>2.1</SchemaVersion>
+
+  <Header>### uVision Project, (C) Keil Software</Header>
+
+  <Targets>
+    <Target>
+      <TargetName>rt-thread</TargetName>
+      <ToolsetNumber>0x4</ToolsetNumber>
+      <ToolsetName>ARM-ADS</ToolsetName>
+      <pCCUsed>5060750::V5.06 update 6 (build 750)::ARMCC</pCCUsed>
+      <uAC6>0</uAC6>
+      <TargetOption>
+        <TargetCommonOption>
+          <Device>-AT32F435ZMT7</Device>
+          <Vendor>ArteryTek</Vendor>
+          <PackID>ArteryTek.AT32F435_437_DFP.2.0.8</PackID>
+          <Cpu>IRAM(0x20000000,0x60000) IROM(0x08000000,0x3F0000) CPUTYPE("Cortex-M4") FPU2 CLOCK(12000000) ELITTLE</Cpu>
+          <FlashUtilSpec></FlashUtilSpec>
+          <StartupFile></StartupFile>
+          <FlashDriverDll>UL2CM3(-S0 -C0 -P0 -FD20000000 -FC1000 -FN1 -FF0AT32F435_4032 -FS08000000 -FL03F0000 -FP0($$Device:-AT32F435ZMT7$Flash\AT32F435_4032.FLM))</FlashDriverDll>
+          <DeviceId>0</DeviceId>
+          <RegisterFile>$$Device:-AT32F435ZMT7$Device\Include\at32f435_437.h</RegisterFile>
+          <MemoryEnv></MemoryEnv>
+          <Cmp></Cmp>
+          <Asm></Asm>
+          <Linker></Linker>
+          <OHString></OHString>
+          <InfinionOptionDll></InfinionOptionDll>
+          <SLE66CMisc></SLE66CMisc>
+          <SLE66AMisc></SLE66AMisc>
+          <SLE66LinkerMisc></SLE66LinkerMisc>
+          <SFDFile>$$Device:-AT32F435ZMT7$SVD\AT32F435xx_v2.svd</SFDFile>
+          <bCustSvd>0</bCustSvd>
+          <UseEnv>0</UseEnv>
+          <BinPath></BinPath>
+          <IncludePath></IncludePath>
+          <LibPath></LibPath>
+          <RegisterFilePath></RegisterFilePath>
+          <DBRegisterFilePath></DBRegisterFilePath>
+          <TargetStatus>
+            <Error>0</Error>
+            <ExitCodeStop>0</ExitCodeStop>
+            <ButtonStop>0</ButtonStop>
+            <NotGenerated>0</NotGenerated>
+            <InvalidFlash>1</InvalidFlash>
+          </TargetStatus>
+          <OutputDirectory>.\build\keil\Obj\</OutputDirectory>
+          <OutputName>rt-thread</OutputName>
+          <CreateExecutable>1</CreateExecutable>
+          <CreateLib>0</CreateLib>
+          <CreateHexFile>0</CreateHexFile>
+          <DebugInformation>1</DebugInformation>
+          <BrowseInformation>0</BrowseInformation>
+          <ListingPath>.\build\keil\List\</ListingPath>
+          <HexFormatSelection>1</HexFormatSelection>
+          <Merge32K>0</Merge32K>
+          <CreateBatchFile>0</CreateBatchFile>
+          <BeforeCompile>
+            <RunUserProg1>0</RunUserProg1>
+            <RunUserProg2>0</RunUserProg2>
+            <UserProg1Name></UserProg1Name>
+            <UserProg2Name></UserProg2Name>
+            <UserProg1Dos16Mode>0</UserProg1Dos16Mode>
+            <UserProg2Dos16Mode>0</UserProg2Dos16Mode>
+            <nStopU1X>0</nStopU1X>
+            <nStopU2X>0</nStopU2X>
+          </BeforeCompile>
+          <BeforeMake>
+            <RunUserProg1>0</RunUserProg1>
+            <RunUserProg2>0</RunUserProg2>
+            <UserProg1Name></UserProg1Name>
+            <UserProg2Name></UserProg2Name>
+            <UserProg1Dos16Mode>0</UserProg1Dos16Mode>
+            <UserProg2Dos16Mode>0</UserProg2Dos16Mode>
+            <nStopB1X>0</nStopB1X>
+            <nStopB2X>0</nStopB2X>
+          </BeforeMake>
+          <AfterMake>
+            <RunUserProg1>1</RunUserProg1>
+            <RunUserProg2>0</RunUserProg2>
+            <UserProg1Name>fromelf --bin !L --output rtthread.bin</UserProg1Name>
+            <UserProg2Name></UserProg2Name>
+            <UserProg1Dos16Mode>0</UserProg1Dos16Mode>
+            <UserProg2Dos16Mode>0</UserProg2Dos16Mode>
+            <nStopA1X>0</nStopA1X>
+            <nStopA2X>0</nStopA2X>
+          </AfterMake>
+          <SelectedForBatchBuild>0</SelectedForBatchBuild>
+          <SVCSIdString></SVCSIdString>
+        </TargetCommonOption>
+        <CommonProperty>
+          <UseCPPCompiler>0</UseCPPCompiler>
+          <RVCTCodeConst>0</RVCTCodeConst>
+          <RVCTZI>0</RVCTZI>
+          <RVCTOtherData>0</RVCTOtherData>
+          <ModuleSelection>0</ModuleSelection>
+          <IncludeInBuild>1</IncludeInBuild>
+          <AlwaysBuild>0</AlwaysBuild>
+          <GenerateAssemblyFile>0</GenerateAssemblyFile>
+          <AssembleAssemblyFile>0</AssembleAssemblyFile>
+          <PublicsOnly>0</PublicsOnly>
+          <StopOnExitCode>3</StopOnExitCode>
+          <CustomArgument></CustomArgument>
+          <IncludeLibraryModules></IncludeLibraryModules>
+          <ComprImg>1</ComprImg>
+        </CommonProperty>
+        <DllOption>
+          <SimDllName>SARMCM3.DLL</SimDllName>
+          <SimDllArguments> -REMAP -MPU</SimDllArguments>
+          <SimDlgDll>DCM.DLL</SimDlgDll>
+          <SimDlgDllArguments>-pCM4</SimDlgDllArguments>
+          <TargetDllName>SARMCM3.DLL</TargetDllName>
+          <TargetDllArguments> -MPU</TargetDllArguments>
+          <TargetDlgDll>TCM.DLL</TargetDlgDll>
+          <TargetDlgDllArguments>-pCM4</TargetDlgDllArguments>
+        </DllOption>
+        <DebugOption>
+          <OPTHX>
+            <HexSelection>1</HexSelection>
+            <HexRangeLowAddress>0</HexRangeLowAddress>
+            <HexRangeHighAddress>0</HexRangeHighAddress>
+            <HexOffset>0</HexOffset>
+            <Oh166RecLen>16</Oh166RecLen>
+          </OPTHX>
+        </DebugOption>
+        <Utilities>
+          <Flash1>
+            <UseTargetDll>1</UseTargetDll>
+            <UseExternalTool>0</UseExternalTool>
+            <RunIndependent>0</RunIndependent>
+            <UpdateFlashBeforeDebugging>1</UpdateFlashBeforeDebugging>
+            <Capability>1</Capability>
+            <DriverSelection>4099</DriverSelection>
+          </Flash1>
+          <bUseTDR>1</bUseTDR>
+          <Flash2>BIN\UL2CM3.DLL</Flash2>
+          <Flash3></Flash3>
+          <Flash4></Flash4>
+          <pFcarmOut></pFcarmOut>
+          <pFcarmGrp></pFcarmGrp>
+          <pFcArmRoot></pFcArmRoot>
+          <FcArmLst>0</FcArmLst>
+        </Utilities>
+        <TargetArmAds>
+          <ArmAdsMisc>
+            <GenerateListings>0</GenerateListings>
+            <asHll>1</asHll>
+            <asAsm>1</asAsm>
+            <asMacX>1</asMacX>
+            <asSyms>1</asSyms>
+            <asFals>1</asFals>
+            <asDbgD>1</asDbgD>
+            <asForm>1</asForm>
+            <ldLst>0</ldLst>
+            <ldmm>1</ldmm>
+            <ldXref>1</ldXref>
+            <BigEnd>0</BigEnd>
+            <AdsALst>1</AdsALst>
+            <AdsACrf>1</AdsACrf>
+            <AdsANop>0</AdsANop>
+            <AdsANot>0</AdsANot>
+            <AdsLLst>1</AdsLLst>
+            <AdsLmap>1</AdsLmap>
+            <AdsLcgr>1</AdsLcgr>
+            <AdsLsym>1</AdsLsym>
+            <AdsLszi>1</AdsLszi>
+            <AdsLtoi>1</AdsLtoi>
+            <AdsLsun>1</AdsLsun>
+            <AdsLven>1</AdsLven>
+            <AdsLsxf>1</AdsLsxf>
+            <RvctClst>0</RvctClst>
+            <GenPPlst>0</GenPPlst>
+            <AdsCpuType>"Cortex-M4"</AdsCpuType>
+            <RvctDeviceName></RvctDeviceName>
+            <mOS>0</mOS>
+            <uocRom>0</uocRom>
+            <uocRam>0</uocRam>
+            <hadIROM>1</hadIROM>
+            <hadIRAM>1</hadIRAM>
+            <hadXRAM>0</hadXRAM>
+            <uocXRam>0</uocXRam>
+            <RvdsVP>2</RvdsVP>
+            <RvdsMve>0</RvdsMve>
+            <RvdsCdeCp>0</RvdsCdeCp>
+            <hadIRAM2>0</hadIRAM2>
+            <hadIROM2>0</hadIROM2>
+            <StupSel>8</StupSel>
+            <useUlib>0</useUlib>
+            <EndSel>0</EndSel>
+            <uLtcg>0</uLtcg>
+            <nSecure>0</nSecure>
+            <RoSelD>3</RoSelD>
+            <RwSelD>3</RwSelD>
+            <CodeSel>0</CodeSel>
+            <OptFeed>0</OptFeed>
+            <NoZi1>0</NoZi1>
+            <NoZi2>0</NoZi2>
+            <NoZi3>0</NoZi3>
+            <NoZi4>0</NoZi4>
+            <NoZi5>0</NoZi5>
+            <Ro1Chk>0</Ro1Chk>
+            <Ro2Chk>0</Ro2Chk>
+            <Ro3Chk>0</Ro3Chk>
+            <Ir1Chk>1</Ir1Chk>
+            <Ir2Chk>0</Ir2Chk>
+            <Ra1Chk>0</Ra1Chk>
+            <Ra2Chk>0</Ra2Chk>
+            <Ra3Chk>0</Ra3Chk>
+            <Im1Chk>1</Im1Chk>
+            <Im2Chk>0</Im2Chk>
+            <OnChipMemories>
+              <Ocm1>
+                <Type>0</Type>
+                <StartAddress>0x0</StartAddress>
+                <Size>0x0</Size>
+              </Ocm1>
+              <Ocm2>
+                <Type>0</Type>
+                <StartAddress>0x0</StartAddress>
+                <Size>0x0</Size>
+              </Ocm2>
+              <Ocm3>
+                <Type>0</Type>
+                <StartAddress>0x0</StartAddress>
+                <Size>0x0</Size>
+              </Ocm3>
+              <Ocm4>
+                <Type>0</Type>
+                <StartAddress>0x0</StartAddress>
+                <Size>0x0</Size>
+              </Ocm4>
+              <Ocm5>
+                <Type>0</Type>
+                <StartAddress>0x0</StartAddress>
+                <Size>0x0</Size>
+              </Ocm5>
+              <Ocm6>
+                <Type>0</Type>
+                <StartAddress>0x0</StartAddress>
+                <Size>0x0</Size>
+              </Ocm6>
+              <IRAM>
+                <Type>0</Type>
+                <StartAddress>0x20000000</StartAddress>
+                <Size>0x60000</Size>
+              </IRAM>
+              <IROM>
+                <Type>1</Type>
+                <StartAddress>0x8000000</StartAddress>
+                <Size>0x3f0000</Size>
+              </IROM>
+              <XRAM>
+                <Type>0</Type>
+                <StartAddress>0x0</StartAddress>
+                <Size>0x0</Size>
+              </XRAM>
+              <OCR_RVCT1>
+                <Type>1</Type>
+                <StartAddress>0x0</StartAddress>
+                <Size>0x0</Size>
+              </OCR_RVCT1>
+              <OCR_RVCT2>
+                <Type>1</Type>
+                <StartAddress>0x0</StartAddress>
+                <Size>0x0</Size>
+              </OCR_RVCT2>
+              <OCR_RVCT3>
+                <Type>1</Type>
+                <StartAddress>0x0</StartAddress>
+                <Size>0x0</Size>
+              </OCR_RVCT3>
+              <OCR_RVCT4>
+                <Type>1</Type>
+                <StartAddress>0x8000000</StartAddress>
+                <Size>0x3f0000</Size>
+              </OCR_RVCT4>
+              <OCR_RVCT5>
+                <Type>1</Type>
+                <StartAddress>0x0</StartAddress>
+                <Size>0x0</Size>
+              </OCR_RVCT5>
+              <OCR_RVCT6>
+                <Type>0</Type>
+                <StartAddress>0x0</StartAddress>
+                <Size>0x0</Size>
+              </OCR_RVCT6>
+              <OCR_RVCT7>
+                <Type>0</Type>
+                <StartAddress>0x0</StartAddress>
+                <Size>0x0</Size>
+              </OCR_RVCT7>
+              <OCR_RVCT8>
+                <Type>0</Type>
+                <StartAddress>0x0</StartAddress>
+                <Size>0x0</Size>
+              </OCR_RVCT8>
+              <OCR_RVCT9>
+                <Type>0</Type>
+                <StartAddress>0x20000000</StartAddress>
+                <Size>0x60000</Size>
+              </OCR_RVCT9>
+              <OCR_RVCT10>
+                <Type>0</Type>
+                <StartAddress>0x0</StartAddress>
+                <Size>0x0</Size>
+              </OCR_RVCT10>
+            </OnChipMemories>
+            <RvctStartVector></RvctStartVector>
+          </ArmAdsMisc>
+          <Cads>
+            <interw>1</interw>
+            <Optim>1</Optim>
+            <oTime>0</oTime>
+            <SplitLS>0</SplitLS>
+            <OneElfS>1</OneElfS>
+            <Strict>0</Strict>
+            <EnumInt>0</EnumInt>
+            <PlainCh>0</PlainCh>
+            <Ropi>0</Ropi>
+            <Rwpi>0</Rwpi>
+            <wLevel>2</wLevel>
+            <uThumb>0</uThumb>
+            <uSurpInc>0</uSurpInc>
+            <uC99>1</uC99>
+            <uGnu>0</uGnu>
+            <useXO>0</useXO>
+            <v6Lang>1</v6Lang>
+            <v6LangP>1</v6LangP>
+            <vShortEn>1</vShortEn>
+            <vShortWch>1</vShortWch>
+            <v6Lto>0</v6Lto>
+            <v6WtE>0</v6WtE>
+            <v6Rtti>0</v6Rtti>
+            <VariousControls>
+              <MiscControls></MiscControls>
+              <Define></Define>
+              <Undefine></Undefine>
+              <IncludePath></IncludePath>
+            </VariousControls>
+          </Cads>
+          <Aads>
+            <interw>1</interw>
+            <Ropi>0</Ropi>
+            <Rwpi>0</Rwpi>
+            <thumb>0</thumb>
+            <SplitLS>0</SplitLS>
+            <SwStkChk>0</SwStkChk>
+            <NoWarn>0</NoWarn>
+            <uSurpInc>0</uSurpInc>
+            <useXO>0</useXO>
+            <ClangAsOpt>4</ClangAsOpt>
+            <VariousControls>
+              <MiscControls></MiscControls>
+              <Define></Define>
+              <Undefine></Undefine>
+              <IncludePath></IncludePath>
+            </VariousControls>
+          </Aads>
+          <LDads>
+            <umfTarg>0</umfTarg>
+            <Ropi>0</Ropi>
+            <Rwpi>0</Rwpi>
+            <noStLib>0</noStLib>
+            <RepFail>1</RepFail>
+            <useFile>0</useFile>
+            <TextAddressRange>0x08000000</TextAddressRange>
+            <DataAddressRange>0x20000000</DataAddressRange>
+            <pXoBase></pXoBase>
+            <ScatterFile>.\board\linker_scripts\link.sct</ScatterFile>
+            <IncludeLibs></IncludeLibs>
+            <IncludeLibsPath></IncludeLibsPath>
+            <Misc></Misc>
+            <LinkerInputFile></LinkerInputFile>
+            <DisabledWarnings></DisabledWarnings>
+          </LDads>
+        </TargetArmAds>
+      </TargetOption>
+      <Groups>
+        <Group>
+          <GroupName>Source Group 1</GroupName>
+        </Group>
+      </Groups>
+    </Target>
+  </Targets>
+
+  <RTE>
+    <apis/>
+    <components/>
+    <files/>
+  </RTE>
+
+  <LayerInfo>
+    <Layers>
+      <Layer>
+        <LayName>&lt;Project Info&gt;</LayName>
+        <LayDesc></LayDesc>
+        <LayUrl></LayUrl>
+        <LayKeys></LayKeys>
+        <LayCat></LayCat>
+        <LayLic></LayLic>
+        <LayTarg>0</LayTarg>
+        <LayPrjMark>1</LayPrjMark>
+      </Layer>
+    </Layers>
+  </LayerInfo>
+
+</Project>
--- a/bsp/at32/at32f437-start/.config
+++ b/bsp/at32/at32f437-start/.config
@@ -0,0 +1,448 @@
+#
+# Automatically generated file; DO NOT EDIT.
+# RT-Thread Configuration
+#
+
+#
+# RT-Thread Kernel
+#
+CONFIG_RT_NAME_MAX=8
+# CONFIG_RT_USING_ARCH_DATA_TYPE is not set
+# CONFIG_RT_USING_SMP is not set
+CONFIG_RT_ALIGN_SIZE=4
+# CONFIG_RT_THREAD_PRIORITY_8 is not set
+CONFIG_RT_THREAD_PRIORITY_32=y
+# CONFIG_RT_THREAD_PRIORITY_256 is not set
+CONFIG_RT_THREAD_PRIORITY_MAX=32
+CONFIG_RT_TICK_PER_SECOND=1000
+CONFIG_RT_USING_OVERFLOW_CHECK=y
+CONFIG_RT_USING_HOOK=y
+CONFIG_RT_HOOK_USING_FUNC_PTR=y
+CONFIG_RT_USING_IDLE_HOOK=y
+CONFIG_RT_IDLE_HOOK_LIST_SIZE=4
+CONFIG_IDLE_THREAD_STACK_SIZE=256
+CONFIG_RT_USING_TIMER_SOFT=y
+CONFIG_RT_TIMER_THREAD_PRIO=4
+CONFIG_RT_TIMER_THREAD_STACK_SIZE=512
+
+#
+# kservice optimization
+#
+# CONFIG_RT_KSERVICE_USING_STDLIB is not set
+# CONFIG_RT_KSERVICE_USING_TINY_SIZE is not set
+# CONFIG_RT_USING_TINY_FFS is not set
+# CONFIG_RT_PRINTF_LONGLONG is not set
+CONFIG_RT_DEBUG=y
+CONFIG_RT_DEBUG_COLOR=y
+# CONFIG_RT_DEBUG_INIT_CONFIG is not set
+# CONFIG_RT_DEBUG_THREAD_CONFIG is not set
+# CONFIG_RT_DEBUG_SCHEDULER_CONFIG is not set
+# CONFIG_RT_DEBUG_IPC_CONFIG is not set
+# CONFIG_RT_DEBUG_TIMER_CONFIG is not set
+# CONFIG_RT_DEBUG_IRQ_CONFIG is not set
+# CONFIG_RT_DEBUG_MEM_CONFIG is not set
+# CONFIG_RT_DEBUG_SLAB_CONFIG is not set
+# CONFIG_RT_DEBUG_MEMHEAP_CONFIG is not set
+# CONFIG_RT_DEBUG_MODULE_CONFIG is not set
+
+#
+# Inter-Thread communication
+#
+CONFIG_RT_USING_SEMAPHORE=y
+CONFIG_RT_USING_MUTEX=y
+CONFIG_RT_USING_EVENT=y
+CONFIG_RT_USING_MAILBOX=y
+CONFIG_RT_USING_MESSAGEQUEUE=y
+# CONFIG_RT_USING_SIGNALS is not set
+
+#
+# Memory Management
+#
+CONFIG_RT_USING_MEMPOOL=y
+CONFIG_RT_USING_SMALL_MEM=y
+# CONFIG_RT_USING_SLAB is not set
+CONFIG_RT_USING_MEMHEAP=y
+CONFIG_RT_MEMHEAP_FAST_MODE=y
+# CONFIG_RT_MEMHEAP_BSET_MODE is not set
+# CONFIG_RT_USING_SMALL_MEM_AS_HEAP is not set
+CONFIG_RT_USING_MEMHEAP_AS_HEAP=y
+CONFIG_RT_USING_MEMHEAP_AUTO_BINDING=y
+# CONFIG_RT_USING_SLAB_AS_HEAP is not set
+# CONFIG_RT_USING_USERHEAP is not set
+# CONFIG_RT_USING_NOHEAP is not set
+# CONFIG_RT_USING_MEMTRACE is not set
+# CONFIG_RT_USING_HEAP_ISR is not set
+CONFIG_RT_USING_HEAP=y
+
+#
+# Kernel Device Object
+#
+CONFIG_RT_USING_DEVICE=y
+# CONFIG_RT_USING_DEVICE_OPS is not set
+# CONFIG_RT_USING_INTERRUPT_INFO is not set
+CONFIG_RT_USING_CONSOLE=y
+CONFIG_RT_CONSOLEBUF_SIZE=128
+CONFIG_RT_CONSOLE_DEVICE_NAME="uart1"
+CONFIG_RT_VER_NUM=0x40100
+CONFIG_ARCH_ARM=y
+CONFIG_RT_USING_CPU_FFS=y
+CONFIG_ARCH_ARM_CORTEX_M=y
+CONFIG_ARCH_ARM_CORTEX_M4=y
+# CONFIG_ARCH_CPU_STACK_GROWS_UPWARD is not set
+
+#
+# RT-Thread Components
+#
+CONFIG_RT_USING_COMPONENTS_INIT=y
+CONFIG_RT_USING_USER_MAIN=y
+CONFIG_RT_MAIN_THREAD_STACK_SIZE=2048
+CONFIG_RT_MAIN_THREAD_PRIORITY=10
+# CONFIG_RT_USING_LEGACY is not set
+
+#
+# C++ features
+#
+# CONFIG_RT_USING_CPLUSPLUS is not set
+
+#
+# Command shell
+#
+CONFIG_RT_USING_FINSH=y
+CONFIG_RT_USING_MSH=y
+CONFIG_FINSH_USING_MSH=y
+CONFIG_FINSH_THREAD_NAME="tshell"
+CONFIG_FINSH_THREAD_PRIORITY=20
+CONFIG_FINSH_THREAD_STACK_SIZE=4096
+CONFIG_FINSH_USING_HISTORY=y
+CONFIG_FINSH_HISTORY_LINES=5
+CONFIG_FINSH_USING_SYMTAB=y
+CONFIG_FINSH_CMD_SIZE=80
+CONFIG_MSH_USING_BUILT_IN_COMMANDS=y
+CONFIG_FINSH_USING_DESCRIPTION=y
+# CONFIG_FINSH_ECHO_DISABLE_DEFAULT is not set
+# CONFIG_FINSH_USING_AUTH is not set
+CONFIG_FINSH_ARG_MAX=10
+
+#
+# Device virtual file system
+#
+# CONFIG_RT_USING_DFS is not set
+# CONFIG_RT_DFS_ELM_USE_LFN_0 is not set
+# CONFIG_RT_DFS_ELM_USE_LFN_1 is not set
+# CONFIG_RT_DFS_ELM_USE_LFN_2 is not set
+# CONFIG_RT_DFS_ELM_USE_LFN_3 is not set
+# CONFIG_RT_DFS_ELM_LFN_UNICODE_0 is not set
+# CONFIG_RT_DFS_ELM_LFN_UNICODE_1 is not set
+# CONFIG_RT_DFS_ELM_LFN_UNICODE_2 is not set
+# CONFIG_RT_DFS_ELM_LFN_UNICODE_3 is not set
+
+#
+# Device Drivers
+#
+CONFIG_RT_USING_DEVICE_IPC=y
+# CONFIG_RT_USING_SYSTEM_WORKQUEUE is not set
+CONFIG_RT_USING_SERIAL=y
+CONFIG_RT_USING_SERIAL_V1=y
+# CONFIG_RT_USING_SERIAL_V2 is not set
+# CONFIG_RT_SERIAL_USING_DMA is not set
+CONFIG_RT_SERIAL_RB_BUFSZ=64
+# CONFIG_RT_USING_CAN is not set
+# CONFIG_RT_USING_HWTIMER is not set
+# CONFIG_RT_USING_CPUTIME is not set
+# CONFIG_RT_USING_I2C is not set
+# CONFIG_RT_USING_PHY is not set
+CONFIG_RT_USING_PIN=y
+# CONFIG_RT_USING_ADC is not set
+# CONFIG_RT_USING_DAC is not set
+# CONFIG_RT_USING_PWM is not set
+# CONFIG_RT_USING_MTD_NOR is not set
+# CONFIG_RT_USING_MTD_NAND is not set
+# CONFIG_RT_USING_PM is not set
+# CONFIG_RT_USING_RTC is not set
+# CONFIG_RT_USING_SDIO is not set
+# CONFIG_RT_USING_SPI is not set
+# CONFIG_RT_USING_WDT is not set
+# CONFIG_RT_USING_AUDIO is not set
+# CONFIG_RT_USING_SENSOR is not set
+# CONFIG_RT_USING_TOUCH is not set
+# CONFIG_RT_USING_HWCRYPTO is not set
+# CONFIG_RT_USING_PULSE_ENCODER is not set
+# CONFIG_RT_USING_INPUT_CAPTURE is not set
+# CONFIG_RT_USING_WIFI is not set
+
+#
+# Using USB
+#
+# CONFIG_RT_USING_USB is not set
+# CONFIG_RT_USING_USB_HOST is not set
+# CONFIG_RT_USING_USB_DEVICE is not set
+
+#
+# POSIX layer and C standard library
+#
+CONFIG_RT_LIBC_DEFAULT_TIMEZONE=8
+
+#
+# POSIX (Portable Operating System Interface) layer
+#
+# CONFIG_RT_USING_POSIX_FS is not set
+# CONFIG_RT_USING_POSIX_DELAY is not set
+# CONFIG_RT_USING_POSIX_CLOCK is not set
+# CONFIG_RT_USING_POSIX_TIMER is not set
+# CONFIG_RT_USING_PTHREADS is not set
+# CONFIG_RT_USING_MODULE is not set
+
+#
+# Interprocess Communication (IPC)
+#
+# CONFIG_RT_USING_POSIX_PIPE is not set
+# CONFIG_RT_USING_POSIX_MESSAGE_QUEUE is not set
+# CONFIG_RT_USING_POSIX_MESSAGE_SEMAPHORE is not set
+
+#
+# Socket is in the 'Network' category
+#
+
+#
+# Network
+#
+# CONFIG_RT_USING_SAL is not set
+# CONFIG_RT_USING_NETDEV is not set
+# CONFIG_RT_USING_LWIP is not set
+# CONFIG_RT_USING_LWIP141 is not set
+# CONFIG_RT_USING_LWIP203 is not set
+# CONFIG_RT_USING_LWIP212 is not set
+# CONFIG_RT_USING_AT is not set
+
+#
+# VBUS(Virtual Software BUS)
+#
+# CONFIG_RT_USING_VBUS is not set
+
+#
+# Utilities
+#
+# CONFIG_RT_USING_RYM is not set
+# CONFIG_RT_USING_ULOG is not set
+# CONFIG_RT_USING_UTEST is not set
+# CONFIG_RT_USING_VAR_EXPORT is not set
+# CONFIG_RT_USING_RT_LINK is not set
+# CONFIG_RT_USING_LWP is not set
+
+#
+# RT-Thread Utestcases
+#
+# CONFIG_RT_USING_UTESTCASES is not set
+
+#
+# RT-Thread online packages
+#
+
+#
+# IoT - internet of things
+#
+# CONFIG_PKG_USING_PAHOMQTT is not set
+# CONFIG_PKG_USING_WEBCLIENT is not set
+# CONFIG_PKG_USING_WEBNET is not set
+# CONFIG_PKG_USING_MONGOOSE is not set
+# CONFIG_PKG_USING_WEBTERMINAL is not set
+# CONFIG_PKG_USING_CJSON is not set
+# CONFIG_PKG_USING_JSMN is not set
+# CONFIG_PKG_USING_LIBMODBUS is not set
+# CONFIG_PKG_USING_FREEMODBUS is not set
+# CONFIG_PKG_USING_LJSON is not set
+# CONFIG_PKG_USING_EZXML is not set
+# CONFIG_PKG_USING_NANOPB is not set
+
+#
+# Wi-Fi
+#
+
+#
+# Marvell WiFi
+#
+# CONFIG_PKG_USING_WLANMARVELL is not set
+
+#
+# Wiced WiFi
+#
+# CONFIG_PKG_USING_WLAN_WICED is not set
+# CONFIG_PKG_USING_RW007 is not set
+# CONFIG_PKG_USING_COAP is not set
+# CONFIG_PKG_USING_NOPOLL is not set
+# CONFIG_PKG_USING_NETUTILS is not set
+# CONFIG_PKG_USING_AT_DEVICE is not set
+# CONFIG_PKG_USING_ATSRV_SOCKET is not set
+# CONFIG_PKG_USING_WIZNET is not set
+
+#
+# IoT Cloud
+#
+# CONFIG_PKG_USING_ONENET is not set
+# CONFIG_PKG_USING_GAGENT_CLOUD is not set
+# CONFIG_PKG_USING_ALI_IOTKIT is not set
+# CONFIG_PKG_USING_AZURE is not set
+# CONFIG_PKG_USING_TENCENT_IOTHUB is not set
+# CONFIG_PKG_USING_NIMBLE is not set
+# CONFIG_PKG_USING_OTA_DOWNLOADER is not set
+# CONFIG_PKG_USING_IPMSG is not set
+# CONFIG_PKG_USING_LSSDP is not set
+# CONFIG_PKG_USING_AIRKISS_OPEN is not set
+# CONFIG_PKG_USING_LIBRWS is not set
+# CONFIG_PKG_USING_TCPSERVER is not set
+# CONFIG_PKG_USING_PROTOBUF_C is not set
+# CONFIG_PKG_USING_ONNX_PARSER is not set
+# CONFIG_PKG_USING_ONNX_BACKEND is not set
+
+#
+# security packages
+#
+# CONFIG_PKG_USING_MBEDTLS is not set
+# CONFIG_PKG_USING_libsodium is not set
+# CONFIG_PKG_USING_TINYCRYPT is not set
+
+#
+# language packages
+#
+# CONFIG_PKG_USING_LUA is not set
+# CONFIG_PKG_USING_JERRYSCRIPT is not set
+# CONFIG_PKG_USING_MICROPYTHON is not set
+
+#
+# multimedia packages
+#
+# CONFIG_PKG_USING_OPENMV is not set
+# CONFIG_PKG_USING_MUPDF is not set
+# CONFIG_PKG_USING_STEMWIN is not set
+# CONFIG_PKG_USING_WAVPLAYER is not set
+# CONFIG_PKG_USING_TJPGD is not set
+
+#
+# tools packages
+#
+# CONFIG_PKG_USING_CMBACKTRACE is not set
+# CONFIG_PKG_USING_EASYFLASH is not set
+# CONFIG_PKG_USING_EASYLOGGER is not set
+# CONFIG_PKG_USING_SYSTEMVIEW is not set
+# CONFIG_PKG_USING_RDB is not set
+# CONFIG_PKG_USING_QRCODE is not set
+# CONFIG_PKG_USING_ULOG_EASYFLASH is not set
+# CONFIG_PKG_USING_ADBD is not set
+
+#
+# system packages
+#
+# CONFIG_PKG_USING_GUIENGINE is not set
+# CONFIG_PKG_USING_PERSIMMON is not set
+# CONFIG_PKG_USING_CAIRO is not set
+# CONFIG_PKG_USING_PIXMAN is not set
+# CONFIG_PKG_USING_LWEXT4 is not set
+# CONFIG_PKG_USING_PARTITION is not set
+# CONFIG_PKG_USING_FAL is not set
+# CONFIG_PKG_USING_SQLITE is not set
+# CONFIG_PKG_USING_RTI is not set
+# CONFIG_PKG_USING_LITTLEVGL2RTT is not set
+# CONFIG_PKG_USING_CMSIS is not set
+# CONFIG_PKG_USING_DFS_YAFFS is not set
+# CONFIG_PKG_USING_LITTLEFS is not set
+# CONFIG_PKG_USING_THREAD_POOL is not set
+# CONFIG_PKG_USING_ROBOTS is not set
+
+#
+# peripheral libraries and drivers
+#
+# CONFIG_PKG_USING_SENSORS_DRIVERS is not set
+# CONFIG_PKG_USING_REALTEK_AMEBA is not set
+# CONFIG_PKG_USING_SHT2X is not set
+# CONFIG_PKG_USING_STM32_SDIO is not set
+# CONFIG_PKG_USING_ICM20608 is not set
+# CONFIG_PKG_USING_U8G2 is not set
+# CONFIG_PKG_USING_BUTTON is not set
+# CONFIG_PKG_USING_PCF8574 is not set
+# CONFIG_PKG_USING_SX12XX is not set
+# CONFIG_PKG_USING_SIGNAL_LED is not set
+# CONFIG_PKG_USING_LEDBLINK is not set
+# CONFIG_PKG_USING_WM_LIBRARIES is not set
+# CONFIG_PKG_USING_KENDRYTE_SDK is not set
+# CONFIG_PKG_USING_INFRARED is not set
+# CONFIG_PKG_USING_ROSSERIAL is not set
+# CONFIG_PKG_USING_AT24CXX is not set
+# CONFIG_PKG_USING_MOTIONDRIVER2RTT is not set
+# CONFIG_PKG_USING_AD7746 is not set
+# CONFIG_PKG_USING_PCA9685 is not set
+# CONFIG_PKG_USING_I2C_TOOLS is not set
+# CONFIG_PKG_USING_NRF24L01 is not set
+# CONFIG_PKG_USING_TOUCH_DRIVERS is not set
+# CONFIG_PKG_USING_LCD_DRIVERS is not set
+# CONFIG_PKG_USING_MAX17048 is not set
+
+#
+# miscellaneous packages
+#
+# CONFIG_PKG_USING_LIBCSV is not set
+# CONFIG_PKG_USING_OPTPARSE is not set
+# CONFIG_PKG_USING_FASTLZ is not set
+# CONFIG_PKG_USING_MINILZO is not set
+# CONFIG_PKG_USING_QUICKLZ is not set
+# CONFIG_PKG_USING_MULTIBUTTON is not set
+# CONFIG_PKG_USING_FLEXIBLE_BUTTON is not set
+# CONFIG_PKG_USING_CANFESTIVAL is not set
+# CONFIG_PKG_USING_ZLIB is not set
+# CONFIG_PKG_USING_DSTR is not set
+# CONFIG_PKG_USING_TINYFRAME is not set
+# CONFIG_PKG_USING_KENDRYTE_DEMO is not set
+# CONFIG_PKG_USING_DIGITALCTRL is not set
+# CONFIG_PKG_USING_UPACKER is not set
+# CONFIG_PKG_USING_UPARAM is not set
+
+#
+# samples: kernel and components samples
+#
+# CONFIG_PKG_USING_KERNEL_SAMPLES is not set
+# CONFIG_PKG_USING_FILESYSTEM_SAMPLES is not set
+# CONFIG_PKG_USING_NETWORK_SAMPLES is not set
+# CONFIG_PKG_USING_PERIPHERAL_SAMPLES is not set
+# CONFIG_PKG_USING_HELLO is not set
+# CONFIG_PKG_USING_VI is not set
+# CONFIG_PKG_USING_NNOM is not set
+# CONFIG_PKG_USING_LIBANN is not set
+# CONFIG_PKG_USING_ELAPACK is not set
+# CONFIG_PKG_USING_ARMv7M_DWT is not set
+# CONFIG_PKG_USING_VT100 is not set
+CONFIG_SOC_FAMILY_AT32=y
+CONFIG_SOC_SERIES_AT32F437=y
+
+#
+# Hardware Drivers Config
+#
+CONFIG_SOC_AT32F437ZMT7=y
+
+#
+# Onboard Peripheral Drivers
+#
+CONFIG_BSP_USING_SERIAL=y
+
+#
+# On-chip Peripheral Drivers
+#
+# CONFIG_BSP_USING_SDRAM is not set
+CONFIG_BSP_USING_GPIO=y
+# CONFIG_BSP_USING_ON_CHIP_FLASH is not set
+# CONFIG_BSP_USING_EMAC is not set
+# CONFIG_PHY_USING_DM9162 is not set
+# CONFIG_PHY_USING_DP83848 is not set
+# CONFIG_BSP_USING_QSPI is not set
+# CONFIG_BSP_USING_RTC is not set
+# CONFIG_BSP_RTC_USING_LEXT is not set
+# CONFIG_BSP_RTC_USING_LICK is not set
+CONFIG_BSP_USING_UART=y
+CONFIG_BSP_USING_UART1=y
+CONFIG_BSP_USING_UART2=y
+CONFIG_BSP_USING_UART3=y
+# CONFIG_BSP_USING_PWM is not set
+# CONFIG_BSP_USING_HWTIMER is not set
+# CONFIG_BSP_USING_SPI is not set
+# CONFIG_BSP_USING_I2C is not set
+# CONFIG_BSP_USING_ADC is not set
+# CONFIG_BSP_USING_CAN is not set
+# CONFIG_BSP_USING_SDIO is not set
--- a/bsp/at32/at32f437-start/Kconfig
+++ b/bsp/at32/at32f437-start/Kconfig
@@ -0,0 +1,21 @@
+mainmenu "RT-Thread Configuration"
+
+config BSP_DIR
+    string
+    option env="BSP_ROOT"
+    default "."
+
+config RTT_DIR
+    string
+    option env="RTT_ROOT"
+    default "../../.."
+
+config PKGS_DIR
+    string
+    option env="PKGS_ROOT"
+    default "packages"
+
+source "$RTT_DIR/Kconfig"
+source "$PKGS_DIR/Kconfig"
+source "../libraries/Kconfig"
+source "board/Kconfig"
--- a/bsp/at32/at32f437-start/README.md
+++ b/bsp/at32/at32f437-start/README.md
@@ -0,0 +1,162 @@
+# AT32F437 AT-START 开发板 BSP 说明
+
+## 简介
+
+AT32F437 AT-START是雅特力推出的一款AT32F437系列的评估板，其搭载的MCU主要资源参数如下：
+
+| 硬件      | 描述           |
+| --------- | ---------------|
+| 芯片型号  | AT32F437ZMT7   |
+| CPU       | ARM Cortex M4  |
+| 主频      | 288M           |
+| 片内SRAM  | 384K可扩展512K |
+| 片内FLASH | 4032K          |
+
+## 编译说明
+
+AT32F437-START板级包支持MDK4﹑MDK5﹑IAR开发环境和GCC编译器，以下是具体版本信息：
+
+| IDE/编译器 | 已测试版本                   |
+| ---------- | ---------------------------- |
+| MDK4       | MDK4.74                      |
+| MDK5       | MDK531                       |
+| IAR        | IAR8.20                      |
+| GCC        | GCC 5.4.1 20160919 (release) |
+
+## 板载资源
+
+- MCU：AT32F437ZMT7，主频 288MHz，4032K FLASH ，384K可扩展到512K RAM
+- 常用外设
+  - LED：3个，（红色PD13、白色PD14、绿色PD15）
+  - 按键：1个，KEY_USER（兼具唤醒功能，PA0)
+- 常用接口：插针串口J8
+- 调试接口，JLINK、板载的 AT-LINK SWD 下载
+
+## 外设支持
+
+本 BSP 目前对外设驱动的支持情况如下：
+
+| 驱动      | 支持情况 |            备注            |
+| --------- | -------- | :------------------------: |
+| UART      | 支持     | USART1/2/3                 |
+| GPIO      | 支持     | PA0...PH7                  |
+| IIC       | 支持     | GPIO模拟I2C                |
+| SPI       | 支持     | SPI1/2                     |
+| ADC       | 支持     | ADC1/2                     |
+| PWM       | 支持     | TMR1/2                     |
+| HWTIMER   | 支持     | TMR3/4/5                   |
+| SDIO      | 支持     | SDIO1                      |
+| CAN       | 支持     | CAN1/2                     |
+| QSPI      | 支持     | QSPI1/2                    |
+| WDT       | 支持     |                            |
+| RTC       | 支持     |                            |
+| FLASH     | 支持     |                            |
+| EMAC      | 支持     |                            |
+| SDRAM     | 支持     |                            |
+
+### IO在板级支持包中的映射情况
+
+| IO号 |   板级包中的定义  |
+| ---- | ----------------- |
+| PD13 | LED2              |
+| PD14 | LED3              |
+| PD15 | LED4              |
+| PA9  | USART1_TX         |
+| PA10 | USART1_RX         |
+| PA2  | USART2_TX         |
+| PA3  | USART2_RX         |
+| PB10 | USART3_TX         |
+| PB11 | USART3_RX         |
+| PA4  | SPI1_NSS          |
+| PA5  | SPI1_SCK          |
+| PA6  | SPI1_MISO         |
+| PA7  | SPI1_MOSI         |
+| PB12 | SPI2_NSS          |
+| PB13 | SPI2_SCK          |
+| PB14 | SPI2_MISO         |
+| PB15 | SPI2_MOSI         |
+| PB6  | I2C1_SCL          |
+| PB7  | I2C1_SDA          |
+| PC8  | SDIO1_D0          |
+| PC9  | SDIO1_D1          |
+| PC10 | SDIO1_D2          |
+| PC11 | SDIO1_D3          |
+| PC12 | SDIO1_CK          |
+| PD2  | SDIO1_CMD         |
+| PA8  | PWM_TMR1_CH1      |
+| PA11 | PWM_TMR1_CH4      |
+| PA0  | PWM_TMR2_CH1      |
+| PA1  | PWM_TMR2_CH2      |
+| PC0  | ADC1/2_IN10       |
+| PC1  | ADC1/2_IN11       |
+| PC2  | ADC1/2_IN12       |
+| PC3  | ADC1/2_IN13       |
+| PC4  | ADC1/2_IN14       |
+| PC5  | ADC1/2_IN15       |
+| PB8  | CAN1_RX           |
+| PB9  | CAN1_TX           |
+| PB5  | CAN2_RX           |
+| PB6  | CAN2_TX           |
+| PB11 | EMAC_RMII_TX_EN   |
+| PB12 | EMAC_RMII_TX0     |
+| PB13 | EMAC_RMII_TX1     |
+| PD8  | EMAC_RMII_RX_DV   |
+| PD9  | EMAC_RMII_RXD0    |
+| PD10 | EMAC_RMII_RXD1    |
+| PA1  | EMAC_RMII_REF_CLK |
+| PF8  | QSPI1_IO0         |
+| PF9  | QSPI1_IO1         |
+| PF7  | QSPI1_IO2         |
+| PF6  | QSPI1_IO3         |
+| PF10 | QSPI1_SCK         |
+| PG6  | QSPI1_CS          |
+| PE7  | QSPI2_IO0         |
+| PE8  | QSPI2_IO1         |
+| PE9  | QSPI2_IO2         |
+| PE10 | QSPI2_IO3         |
+| PG13 | QSPI2_SCK         |
+| PG8  | QSPI2_CS          |
+
+## 使用说明
+
+    本章节是为刚接触 RT-Thread 的新手准备的使用说明，遵循简单的步骤即可将 RT-Thread 操作系统运行在该开发板上，看到实验效果 。
+
+### 快速上手
+
+本 BSP 为开发者提供 MDK4、MDK5 和 IAR 工程，并且支持 GCC 开发环境。下面以 MDK5 开发环境为例，介绍如何将系统运行起来。
+
+#### 硬件连接
+
+使用数据线连接开发板到 PC，打开电源开关。
+
+#### 编译下载
+
+双击 project.uvprojx 文件，打开 MDK5 工程，编译并下载程序到开发板。
+
+> 工程默认配置使用AT-LINK SWD下载程序，在通过AT-LINK SWD连接开发板的基础上，点击下载按钮即可下载程序到开发板
+
+#### 运行结果
+
+下载程序成功之后，系统会自动运行，观察开发板上 LED 的运行效果，LED2/3/4 会周期性闪烁。
+
+连接开发板对应串口到 PC , 在终端工具里打开相应的串口（115200-8-1-N），复位设备后，在串口上可以看到 RT-Thread 的输出信息:
+
+```bash
+ \ | /
+- RT -     Thread Operating System
+ / | \     4.1.0 build Apr  7 2022
+ 2006 - 2022 Copyright by RT-Thread team
+msh />
+```
+
+## 注意事项
+
+AT32F437使用Ethernet且PHY时钟由CLKOUT(PA8)输出提供时，主频最好采用250Mhz。
+
+可在雅特力官方网站进行所需资料下载，如Keil_v5/Keil_v4/IAR等pack安装包和AT-START开发板原理图等（www.arterytek.com）
+
+## 联系人信息
+
+维护人:
+
+- [sheltonyu]
--- a/bsp/at32/at32f437-start/SConscript
+++ b/bsp/at32/at32f437-start/SConscript
@@ -0,0 +1,14 @@
+# for module compiling
+import os
+Import('RTT_ROOT')
+
+cwd = str(Dir('#'))
+objs = []
+list = os.listdir(cwd)
+
+for d in list:
+    path = os.path.join(cwd, d)
+    if os.path.isfile(os.path.join(path, 'SConscript')):
+        objs = objs + SConscript(os.path.join(d, 'SConscript'))
+
+Return('objs')
--- a/bsp/at32/at32f437-start/SConstruct
+++ b/bsp/at32/at32f437-start/SConstruct
@@ -0,0 +1,56 @@
+import os
+import sys
+import rtconfig
+
+if os.getenv('RTT_ROOT'):
+    RTT_ROOT = os.getenv('RTT_ROOT')
+else:
+    RTT_ROOT = os.path.normpath(os.getcwd() + '/../../..')
+
+sys.path = sys.path + [os.path.join(RTT_ROOT, 'tools')]
+try:
+    from building import *
+except:
+    print('Cannot found RT-Thread root directory, please check RTT_ROOT')
+    print(RTT_ROOT)
+    exit(-1)
+
+TARGET = 'rtthread.' + rtconfig.TARGET_EXT
+
+DefaultEnvironment(tools=[])
+env = Environment(tools = ['mingw'],
+    AS = rtconfig.AS, ASFLAGS = rtconfig.AFLAGS,
+    CC = rtconfig.CC, CFLAGS = rtconfig.CFLAGS,
+    AR = rtconfig.AR, ARFLAGS = '-rc',
+    LINK = rtconfig.LINK, LINKFLAGS = rtconfig.LFLAGS)
+env.PrependENVPath('PATH', rtconfig.EXEC_PATH)
+
+if rtconfig.PLATFORM == 'iar':
+    env.Replace(CCCOM = ['$CC $CFLAGS $CPPFLAGS $_CPPDEFFLAGS $_CPPINCFLAGS -o $TARGET $SOURCES'])
+    env.Replace(ARFLAGS = [''])
+    env.Replace(LINKCOM = env["LINKCOM"] + ' --map project.map')
+
+Export('RTT_ROOT')
+Export('rtconfig')
+
+SDK_ROOT = os.path.abspath('./')
+
+if os.path.exists(SDK_ROOT + '/libraries'):
+    libraries_path_prefix = SDK_ROOT + '/libraries'
+else:
+    libraries_path_prefix = os.path.dirname(SDK_ROOT) + '/libraries'
+
+SDK_LIB = libraries_path_prefix
+Export('SDK_LIB')
+
+# prepare building environment
+objs = PrepareBuilding(env, RTT_ROOT, has_libcpu=False)
+
+at32_library = 'f435_437'
+rtconfig.BSP_LIBRARY_TYPE = at32_library
+
+# include libraries
+objs.extend(SConscript(os.path.join(libraries_path_prefix, at32_library, 'SConscript')))
+
+# make a building
+DoBuilding(TARGET, objs)
--- a/bsp/at32/at32f437-start/applications/SConscript
+++ b/bsp/at32/at32f437-start/applications/SConscript
@@ -0,0 +1,17 @@
+# RT-Thread building script for component
+Import('RTT_ROOT')
+Import('rtconfig')
+from building import *
+
+cwd = GetCurrentDir()
+
+# add the general drivers.
+src = Split("""
+main.c
+""")
+
+CPPPATH = [cwd, str(Dir('#'))]
+
+group = DefineGroup('Applications', src, depend = [''], CPPPATH = CPPPATH)
+
+Return('group')
--- a/bsp/at32/at32f437-start/applications/main.c
+++ b/bsp/at32/at32f437-start/applications/main.c
@@ -0,0 +1,48 @@
+/*
+ * Copyright (c) 2006-2021, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2022-03-28     shelton      first version
+ */
+
+#include <rtthread.h>
+#include <rtdevice.h>
+#include "board.h"
+#include "drv_gpio.h"
+
+/* defined the led2 pin: pd13 */
+#define LED2_PIN    GET_PIN(D, 13)
+/* defined the led3 pin: pd14 */
+#define LED3_PIN    GET_PIN(D, 14)
+/* defined the led4 pin: pd15 */
+#define LED4_PIN    GET_PIN(D, 15)
+
+int main(void)
+{
+    rt_uint32_t speed = 200;
+    /* set led2 pin mode to output */
+    rt_pin_mode(LED2_PIN, PIN_MODE_OUTPUT);
+    /* set led3 pin mode to output */
+    rt_pin_mode(LED3_PIN, PIN_MODE_OUTPUT);
+    /* set led4 pin mode to output */
+    rt_pin_mode(LED4_PIN, PIN_MODE_OUTPUT);
+
+    while (1)
+    {
+        rt_pin_write(LED2_PIN, PIN_LOW);
+        rt_thread_mdelay(speed);
+        rt_pin_write(LED3_PIN, PIN_LOW);
+        rt_thread_mdelay(speed);
+        rt_pin_write(LED4_PIN, PIN_LOW);
+        rt_thread_mdelay(speed);
+        rt_pin_write(LED2_PIN, PIN_HIGH);
+        rt_thread_mdelay(speed);
+        rt_pin_write(LED3_PIN, PIN_HIGH);
+        rt_thread_mdelay(speed);
+        rt_pin_write(LED4_PIN, PIN_HIGH);
+        rt_thread_mdelay(speed);
+    }
+}
--- a/bsp/at32/at32f437-start/board/Kconfig
+++ b/bsp/at32/at32f437-start/board/Kconfig
@@ -0,0 +1,245 @@
+menu "Hardware Drivers Config"
+
+config SOC_AT32F437ZMT7
+    bool
+    select SOC_SERIES_AT32F437
+    select RT_USING_COMPONENTS_INIT
+    select RT_USING_USER_MAIN
+    default y
+
+menu "Onboard Peripheral Drivers"
+
+    config BSP_USING_SERIAL
+        bool "Enable USART (uart1)"
+        select BSP_USING_UART
+        select BSP_USING_UART1
+        default y
+
+endmenu
+
+menu "On-chip Peripheral Drivers"
+
+    config BSP_USING_SDRAM
+        bool "Enable SDRAM"
+        default n
+
+    config BSP_USING_GPIO
+        bool "Enable GPIO"
+        select RT_USING_PIN
+        default y
+
+    config BSP_USING_ON_CHIP_FLASH
+        bool "Enable on-chip FLASH"
+        default n 
+
+    config BSP_USING_EMAC
+        bool "Enable Ethernet"
+        default n
+        select RT_USING_LWIP
+        if BSP_USING_EMAC
+            choice
+                prompt "Select phy"
+                default PHY_USING_DM9162
+
+                config PHY_USING_DM9162
+                    bool "PHY USING DM9162"
+
+                config PHY_USING_DP83848
+                    bool "PHY USING DP83848"
+            endchoice
+        endif
+
+    menuconfig BSP_USING_QSPI
+        bool "Enable QSPI BUS"
+        default n
+        select RT_USING_QSPI
+        select RT_USING_SPI
+        if BSP_USING_QSPI
+            config BSP_USING_QSPI1
+                bool "Enable QSPI1"
+                default n
+
+            config BSP_USING_QSPI2
+                bool "Enable QSPI2"
+                default n
+        endif
+
+    menuconfig BSP_USING_RTC
+        bool "Enable RTC"
+        select RT_USING_RTC
+        default n
+        if BSP_USING_RTC
+            choice
+                prompt "Select clock source"
+                default BSP_RTC_USING_LEXT
+
+                config BSP_RTC_USING_LEXT
+                    bool "RTC USING LEXT"
+
+                config BSP_RTC_USING_LICK
+                    bool "RTC USING LICK"
+            endchoice
+        endif
+
+    menuconfig BSP_USING_UART
+        bool "Enable UART"
+        default y
+        select RT_USING_SERIAL
+        if BSP_USING_UART
+            config BSP_USING_UART1
+                bool "Enable UART1"
+                default y
+
+            config BSP_USING_UART2
+                bool "Enable UART2"
+                default n
+
+            config BSP_USING_UART3
+                bool "Enable UART3"
+                default n
+        endif
+
+    menuconfig BSP_USING_PWM
+        bool "Enable PWM"
+        default n
+        select RT_USING_PWM
+        if BSP_USING_PWM
+        menuconfig BSP_USING_PWM1
+            bool "Enable timer1 output pwm"
+            default n
+            if BSP_USING_PWM1
+                config BSP_USING_PWM1_CH1
+                    bool "Enable PWM1 channel1"
+                    default n
+
+                config BSP_USING_PWM1_CH4
+                    bool "Enable PWM1 channel4"
+                    default n
+            endif
+        menuconfig BSP_USING_PWM2
+            bool "Enable timer2 output pwm"
+            default n
+            if BSP_USING_PWM2
+                config BSP_USING_PWM2_CH1
+                    bool "Enable PWM2 channel1"
+                    default n
+
+                config BSP_USING_PWM2_CH2
+                    bool "Enable PWM2 channel2"
+                    default n
+            endif
+        endif
+
+    menuconfig BSP_USING_HWTIMER
+        bool "Enable HWTIMER"
+        default n
+        select RT_USING_HWTIMER
+        if BSP_USING_HWTIMER
+        config BSP_USING_HWTMR3
+            bool "Enable hardware timer3"
+            default n
+        config BSP_USING_HWTMR4
+            bool "Enable hardware timer4"
+            default n
+        config BSP_USING_HWTMR5
+            bool "Enable hardware timer5"
+            default n
+        endif
+
+    menuconfig BSP_USING_SPI
+        bool "Enable SPI BUS"
+        default n
+        select RT_USING_SPI
+        if BSP_USING_SPI
+            config BSP_USING_SPI1
+                bool "Enable SPI1 BUS"
+                default n
+
+            config BSP_USING_SPI2
+                bool "Enable SPI2 BUS"
+                default n
+        endif
+
+    menuconfig BSP_USING_I2C
+        bool "Enable I2C BUS (software simulation)"
+        default n
+        select RT_USING_I2C
+        select RT_USING_I2C_BITOPS
+        select RT_USING_PIN
+        if BSP_USING_I2C
+            config BSP_USING_I2C1
+                bool "Enable I2C1 BUS"
+                if BSP_USING_I2C1
+                    config BSP_I2C1_SCL_PIN
+                        int "i2c1 scl pin number"
+                        range 0 63
+                        default 22
+                    config BSP_I2C1_SDA_PIN
+                        int "I2C1 sda pin number"
+                        range 0 63
+                        default 23
+                endif
+            config BSP_USING_I2C2
+                bool "Enable I2C2 BUS"
+                if BSP_USING_I2C2
+                    config BSP_I2C2_SCL_PIN
+                        int "i2c2 scl pin number"
+                        range 0 63
+                        default 26
+                    config BSP_I2C2_SDA_PIN
+                        int "I2C2 sda pin number"
+                        range 0 63
+                        default 27
+                endif
+            config BSP_USING_I2C3
+                bool "Enable I2C3 BUS"
+                if BSP_USING_I2C3
+                    config BSP_I2C3_SCL_PIN
+                        int "i2c3 scl pin number"
+                        range 0 63
+                        default 8
+                    config BSP_I2C3_SDA_PIN
+                        int "I2C3 sda pin number"
+                        range 0 63
+                        default 41
+                endif
+        endif
+
+    menuconfig BSP_USING_ADC
+        bool "Enable ADC"
+        default n
+        select RT_USING_ADC
+        if BSP_USING_ADC
+            config BSP_USING_ADC1
+                bool "Enable ADC1"
+                default n
+            config BSP_USING_ADC2
+                bool "Enable ADC2"
+                default n
+        endif
+
+    menuconfig BSP_USING_CAN
+        bool "Enable CAN"
+        default n
+        select RT_USING_CAN
+        if BSP_USING_CAN
+            config BSP_USING_CAN1
+                bool "using CAN1"
+                default n
+            config BSP_USING_CAN2
+                bool "using CAN2"
+                default n
+        endif
+
+    menuconfig BSP_USING_SDIO
+        bool "Enable SDIO"
+        default n
+        select RT_USING_SDIO
+        if BSP_USING_SDIO
+            config BSP_USING_SDIO1
+                bool "Enable SDIO1"
+                default n
+        endif
+endmenu
+
+endmenu
--- a/bsp/at32/at32f437-start/board/SConscript
+++ b/bsp/at32/at32f437-start/board/SConscript
@@ -0,0 +1,29 @@
+import os
+import rtconfig
+from building import *
+
+Import('SDK_LIB')
+
+cwd = GetCurrentDir()
+
+# add general drivers
+src = Split('''
+src/board.c
+src/at32_msp.c
+''')
+
+path = [cwd]
+path += [cwd + '/inc']
+
+startup_path_prefix = SDK_LIB
+
+if rtconfig.CROSS_TOOL == 'gcc':
+    src += [startup_path_prefix + '/f435_437/firmware/cmsis/cm4/device_support/startup/gcc/startup_at32f435_437.s']
+elif rtconfig.CROSS_TOOL == 'keil':
+    src += [startup_path_prefix + '/f435_437/firmware/cmsis/cm4/device_support/startup/mdk/startup_at32f435_437.s']
+elif rtconfig.CROSS_TOOL == 'iar':
+    src += [startup_path_prefix + '/f435_437/firmware/cmsis/cm4/device_support/startup/iar/startup_at32f435_437.s']
+    
+CPPDEFINES = ['AT32F437ZMT7']
+group = DefineGroup('Drivers', src, depend = [''], CPPPATH = path, CPPDEFINES = CPPDEFINES)
+Return('group')
--- a/bsp/at32/at32f437-start/board/inc/at32_msp.h
+++ b/bsp/at32/at32f437-start/board/inc/at32_msp.h
@@ -0,0 +1,26 @@
+/*
+ * Copyright (c) 2006-2018, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2022-03-31     shelton      first version
+ */
+
+#ifndef __AT32_MSP_H__
+#define __AT32_MSP_H__
+
+void at32_msp_usart_init(void *instance);
+void at32_msp_spi_init(void *instance);
+void at32_msp_tmr_init(void *instance);
+void at32_msp_i2c_init(void *instance);
+void at32_msp_sdio_init(void *instance);
+void at32_msp_adc_init(void *instance);
+void at32_msp_hwtmr_init(void *instance);
+void at32_msp_can_init(void *instance);
+void at32_msp_qspi_init(void *instance);
+void at32_msp_sdram_init(void *instance);
+void at32_msp_emac_init(void *instance);
+
+#endif /* __AT32_MSP_H__ */
--- a/bsp/at32/at32f437-start/board/inc/at32f435_437_conf.h
+++ b/bsp/at32/at32f437-start/board/inc/at32f435_437_conf.h
@@ -0,0 +1,174 @@
+/**
+  **************************************************************************
+  * @file     at32f435_437_conf.h
+  * @version  v2.0.6
+  * @date     2022-03-11
+  * @brief    at32f435_437 config header file
+  **************************************************************************
+  *                       Copyright notice & Disclaimer
+  *
+  * The software Board Support Package (BSP) that is made available to
+  * download from Artery official website is the copyrighted work of Artery.
+  * Artery authorizes customers to use, copy, and distribute the BSP
+  * software and its related documentation for the purpose of design and
+  * development in conjunction with Artery microcontrollers. Use of the
+  * software is governed by this copyright notice and the following disclaimer.
+  *
+  * THIS SOFTWARE IS PROVIDED ON "AS IS" BASIS WITHOUT WARRANTIES,
+  * GUARANTEES OR REPRESENTATIONS OF ANY KIND. ARTERY EXPRESSLY DISCLAIMS,
+  * TO THE FULLEST EXTENT PERMITTED BY LAW, ALL EXPRESS, IMPLIED OR
+  * STATUTORY OR OTHER WARRANTIES, GUARANTEES OR REPRESENTATIONS,
+  * INCLUDING BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY,
+  * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT.
+  *
+  **************************************************************************
+  */
+
+/* define to prevent recursive inclusion -------------------------------------*/
+#ifndef __AT32F435_437_CONF_H
+#define __AT32F435_437_CONF_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+  * @brief in the following line adjust the value of high speed exernal crystal (hext)
+  * used in your application
+  *
+  * tip: to avoid modifying this file each time you need to use different hext, you
+  *      can define the hext value in your toolchain compiler preprocessor.
+  *
+  */
+#if !defined  HEXT_VALUE
+#define HEXT_VALUE                       ((uint32_t)8000000) /*!< value of the high speed exernal crystal in hz */
+#endif
+
+/**
+  * @brief in the following line adjust the high speed exernal crystal (hext) startup
+  * timeout value
+  */
+#define HEXT_STARTUP_TIMEOUT             ((uint16_t)0x3000) /*!< time out for hext start up */
+#define HICK_VALUE                       ((uint32_t)8000000) /*!< value of the high speed internal clock in hz */
+
+/* module define -------------------------------------------------------------*/
+#define CRM_MODULE_ENABLED
+#define TMR_MODULE_ENABLED
+#define ERTC_MODULE_ENABLED
+#define GPIO_MODULE_ENABLED
+#define I2C_MODULE_ENABLED
+#define USART_MODULE_ENABLED
+#define PWC_MODULE_ENABLED
+#define CAN_MODULE_ENABLED
+#define ADC_MODULE_ENABLED
+#define DAC_MODULE_ENABLED
+#define SPI_MODULE_ENABLED
+#define EDMA_MODULE_ENABLED
+#define DMA_MODULE_ENABLED
+#define DEBUG_MODULE_ENABLED
+#define FLASH_MODULE_ENABLED
+#define CRC_MODULE_ENABLED
+#define WWDT_MODULE_ENABLED
+#define WDT_MODULE_ENABLED
+#define EXINT_MODULE_ENABLED
+#define SDIO_MODULE_ENABLED
+#define XMC_MODULE_ENABLED
+#define USB_MODULE_ENABLED
+#define ACC_MODULE_ENABLED
+#define MISC_MODULE_ENABLED
+#define QSPI_MODULE_ENABLED
+#define DVP_MODULE_ENABLED
+#define SCFG_MODULE_ENABLED
+#define EMAC_MODULE_ENABLED
+
+/* includes ------------------------------------------------------------------*/
+#ifdef CRM_MODULE_ENABLED
+#include "at32f435_437_crm.h"
+#endif
+#ifdef TMR_MODULE_ENABLED
+#include "at32f435_437_tmr.h"
+#endif
+#ifdef ERTC_MODULE_ENABLED
+#include "at32f435_437_ertc.h"
+#endif
+#ifdef GPIO_MODULE_ENABLED
+#include "at32f435_437_gpio.h"
+#endif
+#ifdef I2C_MODULE_ENABLED
+#include "at32f435_437_i2c.h"
+#endif
+#ifdef USART_MODULE_ENABLED
+#include "at32f435_437_usart.h"
+#endif
+#ifdef PWC_MODULE_ENABLED
+#include "at32f435_437_pwc.h"
+#endif
+#ifdef CAN_MODULE_ENABLED
+#include "at32f435_437_can.h"
+#endif
+#ifdef ADC_MODULE_ENABLED
+#include "at32f435_437_adc.h"
+#endif
+#ifdef DAC_MODULE_ENABLED
+#include "at32f435_437_dac.h"
+#endif
+#ifdef SPI_MODULE_ENABLED
+#include "at32f435_437_spi.h"
+#endif
+#ifdef DMA_MODULE_ENABLED
+#include "at32f435_437_dma.h"
+#endif
+#ifdef DEBUG_MODULE_ENABLED
+#include "at32f435_437_debug.h"
+#endif
+#ifdef FLASH_MODULE_ENABLED
+#include "at32f435_437_flash.h"
+#endif
+#ifdef CRC_MODULE_ENABLED
+#include "at32f435_437_crc.h"
+#endif
+#ifdef WWDT_MODULE_ENABLED
+#include "at32f435_437_wwdt.h"
+#endif
+#ifdef WDT_MODULE_ENABLED
+#include "at32f435_437_wdt.h"
+#endif
+#ifdef EXINT_MODULE_ENABLED
+#include "at32f435_437_exint.h"
+#endif
+#ifdef SDIO_MODULE_ENABLED
+#include "at32f435_437_sdio.h"
+#endif
+#ifdef XMC_MODULE_ENABLED
+#include "at32f435_437_xmc.h"
+#endif
+#ifdef ACC_MODULE_ENABLED
+#include "at32f435_437_acc.h"
+#endif
+#ifdef MISC_MODULE_ENABLED
+#include "at32f435_437_misc.h"
+#endif
+#ifdef EDMA_MODULE_ENABLED
+#include "at32f435_437_edma.h"
+#endif
+#ifdef QSPI_MODULE_ENABLED
+#include "at32f435_437_qspi.h"
+#endif
+#ifdef SCFG_MODULE_ENABLED
+#include "at32f435_437_scfg.h"
+#endif
+#ifdef EMAC_MODULE_ENABLED
+#include "at32f435_437_emac.h"
+#endif
+#ifdef DVP_MODULE_ENABLED
+#include "at32f435_437_dvp.h"
+#endif
+#ifdef USB_MODULE_ENABLED
+#include "at32f435_437_usb.h"
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
--- a/bsp/at32/at32f437-start/board/inc/board.h
+++ b/bsp/at32/at32f437-start/board/inc/board.h
@@ -0,0 +1,52 @@
+/*
+ * Copyright (c) 2006-2021, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2022-03-28     shelton      first version
+ */
+
+#ifndef __BOARD_H__
+#define __BOARD_H__
+
+#include <rtthread.h>
+#include "at32f435_437.h"
+#include "at32_msp.h"
+#include "drv_common.h"
+#include "drv_gpio.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define AT32_FLASH_START_ADRESS         ((uint32_t)0x08000000)
+#define FLASH_PAGE_SIZE                 (4 * 1024)
+#define AT32_FLASH_SIZE                 (4032 * 1024)
+#define AT32_FLASH_END_ADDRESS          ((uint32_t)(AT32_FLASH_START_ADRESS + AT32_FLASH_SIZE))
+
+/* internal sram memory size[kbytes] <384>, default: 384*/
+#define AT32_SRAM_SIZE                  384
+#define AT32_SRAM_END                   (0x20000000 + AT32_SRAM_SIZE * 1024)
+
+#if defined(__ARMCC_VERSION)
+extern int Image$$RW_IRAM1$$ZI$$Limit;
+#define HEAP_BEGIN                      ((void *)&Image$$RW_IRAM1$$ZI$$Limit)
+#elif __ICCARM__
+#pragma section="CSTACK"
+#define HEAP_BEGIN                      (__segment_end("CSTACK"))
+#else
+extern int __bss_end;
+#define HEAP_BEGIN                      ((void *)&__bss_end)
+#endif
+
+#define HEAP_END                        AT32_SRAM_END
+
+void system_clock_config(void);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __BOARD_H__ */
--- a/bsp/at32/at32f437-start/board/linker_scripts/link.icf
+++ b/bsp/at32/at32f437-start/board/linker_scripts/link.icf
@@ -0,0 +1,28 @@
+/*###ICF### Section handled by ICF editor, don't touch! ****/
+/*-Editor annotation file-*/
+/* IcfEditorFile="$TOOLKIT_DIR$\config\ide\IcfEditor\cortex_v1_0.xml" */
+/*-Specials-*/
+define symbol __ICFEDIT_intvec_start__ = 0x08000000;
+/*-Memory Regions-*/
+define symbol __ICFEDIT_region_ROM_start__ = 0x08000000;
+define symbol __ICFEDIT_region_ROM_end__   = 0x083EFFFF;
+define symbol __ICFEDIT_region_RAM_start__ = 0x20000000;
+define symbol __ICFEDIT_region_RAM_end__   = 0x2005FFFF;
+/*-Sizes-*/
+define symbol __ICFEDIT_size_cstack__ = 0x0400;
+define symbol __ICFEDIT_size_heap__   = 0x0000;
+/**** End of ICF editor section. ###ICF###*/
+
+define memory mem with size = 4G;
+define region ROM_region      = mem:[from __ICFEDIT_region_ROM_start__   to __ICFEDIT_region_ROM_end__];
+define region RAM_region      = mem:[from __ICFEDIT_region_RAM_start__   to __ICFEDIT_region_RAM_end__];
+
+define block CSTACK    with alignment = 8, size = __ICFEDIT_size_cstack__   { };
+
+initialize by copy { readwrite };
+do not initialize  { section .noinit };
+
+place at address mem:__ICFEDIT_intvec_start__ { readonly section .intvec };
+
+place in ROM_region   { readonly };
+place in RAM_region   { readwrite, last block CSTACK};
--- a/bsp/at32/at32f437-start/board/linker_scripts/link.lds
+++ b/bsp/at32/at32f437-start/board/linker_scripts/link.lds
@@ -0,0 +1,156 @@
+/*
+ * linker script for AT32 with GNU ld
+ */
+
+/* Program Entry, set to mark it as "used" and avoid gc */
+MEMORY
+{
+    ROM (rx) : ORIGIN = 0x08000000, LENGTH = 4032k /* 4032KB flash */
+    RAM (rw) : ORIGIN = 0x20000000, LENGTH =  384k /* 384K sram */
+}
+ENTRY(Reset_Handler)
+_system_stack_size = 0x200;
+
+SECTIONS
+{
+    .text :
+    {
+        . = ALIGN(4);
+        _stext = .;
+        KEEP(*(.isr_vector))            /* Startup code */
+
+        . = ALIGN(4);
+        *(.text)                        /* remaining code */
+        *(.text.*)                      /* remaining code */
+        *(.rodata)                      /* read-only data (constants) */
+        *(.rodata*)
+        *(.glue_7)
+        *(.glue_7t)
+        *(.gnu.linkonce.t*)
+
+        /* section information for finsh shell */
+        . = ALIGN(4);
+        __fsymtab_start = .;
+        KEEP(*(FSymTab))
+        __fsymtab_end = .;
+
+        . = ALIGN(4);
+        __vsymtab_start = .;
+        KEEP(*(VSymTab))
+        __vsymtab_end = .;
+
+        /* section information for initial. */
+        . = ALIGN(4);
+        __rt_init_start = .;
+        KEEP(*(SORT(.rti_fn*)))
+        __rt_init_end = .;
+
+        . = ALIGN(4);
+
+        PROVIDE(__ctors_start__ = .);
+        KEEP (*(SORT(.init_array.*)))
+        KEEP (*(.init_array))
+        PROVIDE(__ctors_end__ = .);
+
+        . = ALIGN(4); 
+
+        _etext = .;
+    } > ROM = 0
+
+    /* .ARM.exidx is sorted, so has to go in its own output section.  */
+    __exidx_start = .;
+    .ARM.exidx :
+    {
+        *(.ARM.exidx* .gnu.linkonce.armexidx.*)
+
+        /* This is used by the startup in order to initialize the .data secion */
+        _sidata = .;
+    } > ROM
+    __exidx_end = .;
+
+    /* .data section which is used for initialized data */
+
+    .data : AT (_sidata)
+    {
+        . = ALIGN(4);
+        /* This is used by the startup in order to initialize the .data secion */
+        _sdata = . ;
+
+        *(.data)
+        *(.data.*)
+        *(.gnu.linkonce.d*)
+
+        PROVIDE(__dtors_start__ = .);
+        KEEP(*(SORT(.dtors.*)))
+        KEEP(*(.dtors))
+        PROVIDE(__dtors_end__ = .);
+        
+        . = ALIGN(4);
+        /* This is used by the startup in order to initialize the .data secion */
+        _edata = . ;
+    } >RAM
+
+    .stack : 
+    {
+        . = ALIGN(4);
+        _sstack = .;
+        . = . + _system_stack_size;
+        . = ALIGN(4);
+        _estack = .;
+    } >RAM
+
+    __bss_start = .;
+    .bss :
+    {
+        . = ALIGN(4);
+        /* This is used by the startup in order to initialize the .bss secion */
+        _sbss = .;
+
+        *(.bss)
+        *(.bss.*)
+        *(COMMON)
+
+        . = ALIGN(4);
+        /* This is used by the startup in order to initialize the .bss secion */
+        _ebss = . ;
+        
+        *(.bss.init)
+    } > RAM
+    __bss_end = .;
+
+    _end = .;
+
+    /* Stabs debugging sections.  */
+    .stab          0 : { *(.stab) }
+    .stabstr       0 : { *(.stabstr) }
+    .stab.excl     0 : { *(.stab.excl) }
+    .stab.exclstr  0 : { *(.stab.exclstr) }
+    .stab.index    0 : { *(.stab.index) }
+    .stab.indexstr 0 : { *(.stab.indexstr) }
+    .comment       0 : { *(.comment) }
+    /* DWARF debug sections.
+     * Symbols in the DWARF debugging sections are relative to the beginning
+     * of the section so we begin them at 0.  */
+    /* DWARF 1 */
+    .debug          0 : { *(.debug) }
+    .line           0 : { *(.line) }
+    /* GNU DWARF 1 extensions */
+    .debug_srcinfo  0 : { *(.debug_srcinfo) }
+    .debug_sfnames  0 : { *(.debug_sfnames) }
+    /* DWARF 1.1 and DWARF 2 */
+    .debug_aranges  0 : { *(.debug_aranges) }
+    .debug_pubnames 0 : { *(.debug_pubnames) }
+    /* DWARF 2 */
+    .debug_info     0 : { *(.debug_info .gnu.linkonce.wi.*) }
+    .debug_abbrev   0 : { *(.debug_abbrev) }
+    .debug_line     0 : { *(.debug_line) }
+    .debug_frame    0 : { *(.debug_frame) }
+    .debug_str      0 : { *(.debug_str) }
+    .debug_loc      0 : { *(.debug_loc) }
+    .debug_macinfo  0 : { *(.debug_macinfo) }
+    /* SGI/MIPS DWARF 2 extensions */
+    .debug_weaknames 0 : { *(.debug_weaknames) }
+    .debug_funcnames 0 : { *(.debug_funcnames) }
+    .debug_typenames 0 : { *(.debug_typenames) }
+    .debug_varnames  0 : { *(.debug_varnames) }
+}
--- a/bsp/at32/at32f437-start/board/linker_scripts/link.sct
+++ b/bsp/at32/at32f437-start/board/linker_scripts/link.sct
@@ -0,0 +1,15 @@
+; *************************************************************
+; *** Scatter-Loading Description File generated by uVision ***
+; *************************************************************
+
+LR_IROM1 0x08000000 0x00400000  {    ; load region size_region
+  ER_IROM1 0x08000000 0x00400000  {  ; load address = execution address
+   *.o (RESET, +First)
+   *(InRoot$$Sections)
+   .ANY (+RO)
+  }
+  RW_IRAM1 0x20000000 0x00060000  {  ; RW data
+   .ANY (+RW +ZI)
+  }
+}
+
--- a/bsp/at32/at32f437-start/board/src/at32_msp.c
+++ b/bsp/at32/at32f437-start/board/src/at32_msp.c
--- a/bsp/at32/at32f437-start/board/src/board.c
+++ b/bsp/at32/at32f437-start/board/src/board.c
@@ -0,0 +1,85 @@
+/*
+ * Copyright (c) 2006-2021, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2022-03-28     shelton      first version
+ */
+
+#include "board.h"
+
+void system_clock_config(void)
+{
+  /* enable pwc periph clock */
+  crm_periph_clock_enable(CRM_PWC_PERIPH_CLOCK, TRUE);
+
+  /* config ldo voltage */
+  pwc_ldo_output_voltage_set(PWC_LDO_OUTPUT_1V3);
+
+  /* set the flash clock divider */
+  flash_clock_divider_set(FLASH_CLOCK_DIV_3);
+
+  /* reset crm */
+  crm_reset();
+
+  crm_clock_source_enable(CRM_CLOCK_SOURCE_HEXT, TRUE);
+
+  /* wait till hext is ready */
+  while(crm_hext_stable_wait() == ERROR)
+  {
+  }
+
+  /* config pll clock resource
+  common frequency config list: pll source selected  hick or hext(8mhz)
+  _______________________________________________________________________________________
+  |        |         |         |         |         |         |         |        |        |
+  |pll(mhz)|   288   |   252   |   216   |   180   |   144   |   108   |   72   |   36   |
+  |________|_________|_________|_________|_________|_________|_________|_________________|
+  |        |         |         |         |         |         |         |        |        |
+  |pll_ns  |   72    |   63    |   108   |   90    |   72    |   108   |   72   |   72   |
+  |        |         |         |         |         |         |         |        |        |
+  |pll_ms  |   1     |   1     |   1     |   1     |   1     |   1     |   1    |   1    |
+  |        |         |         |         |         |         |         |        |        |
+  |pll_fr  |   FR_2  |   FR_2  |   FR_4  |   FR_4  |   FR_4  |   FR_8  |   FR_8 |   FR_16|
+  |________|_________|_________|_________|_________|_________|_________|________|________|
+
+  if pll clock source selects hext with other frequency values, or configure pll to other
+  frequency values, please use the at32 new clock  configuration tool for configuration.  */
+  crm_pll_config(CRM_PLL_SOURCE_HEXT, 125, 1, CRM_PLL_FR_4);
+
+  /* enable pll */
+  crm_clock_source_enable(CRM_CLOCK_SOURCE_PLL, TRUE);
+
+  /* wait till pll is ready */
+  while(crm_flag_get(CRM_PLL_STABLE_FLAG) != SET)
+  {
+  }
+
+  /* config ahbclk */
+  crm_ahb_div_set(CRM_AHB_DIV_1);
+
+  /* config apb2clk */
+  crm_apb2_div_set(CRM_APB2_DIV_2);
+
+  /* config apb1clk */
+  crm_apb1_div_set(CRM_APB1_DIV_2);
+
+  /* enable auto step mode */
+  crm_auto_step_mode_enable(TRUE);
+
+  /* select pll as system clock source */
+  crm_sysclk_switch(CRM_SCLK_PLL);
+
+  /* wait till pll is used as system clock source */
+  while(crm_sysclk_switch_status_get() != CRM_SCLK_PLL)
+  {
+  }
+
+  /* disable auto step mode */
+  crm_auto_step_mode_enable(FALSE);
+
+  /* update system_core_clock global variable */
+  system_core_clock_update();
+}
--- a/bsp/at32/at32f437-start/project.ewp
+++ b/bsp/at32/at32f437-start/project.ewp
--- a/bsp/at32/at32f437-start/project.eww
+++ b/bsp/at32/at32f437-start/project.eww
@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="iso-8859-1"?>
+
+<workspace>
+  <project>
+    <path>$WS_DIR$\project.ewp</path>
+  </project>
+  <batchBuild/>
+</workspace>
+
+
--- a/Show More
+++ b/Show More