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* [components][clock_time] Refactor time subsystem around clock_time Introduce the clock_time core with clock source/event separation, high-resolution scheduling, and boot-time helpers, plus clock_timer adapters for timer peripherals. Remove legacy ktime/cputime/hwtimer implementations and migrate arch and BSP time paths to the new subsystem while keeping POSIX time integration functional. Update drivers, Kconfig/SConscript wiring, documentation, and tests; add clock_time overview docs and align naming to clock_boottime/clock_hrtimer/clock_timer. * [components][clock_time] Use BSP-provided clock timer frequency on riscv64 * [risc-v] Use runtime clock timer frequency for tick and delays * [bsp] Add clock timer frequency hooks for riscv64 boards * [bsp] Update Renesas RA driver doc clock_timer link * [bsp] Sync zynqmp-r5-axu4ev rtconfig after config refresh * [bsp][rk3500] Update rk3500 clock configuration * [bsp][hpmicro] Add rt_hw_us_delay hook and update board delays * [bsp][stm32l496-st-nucleo] enable clock_time for hwtimer sample in ci * [bsp][hpmicro] Fix rtconfig include scope for hpm6750evk Move rtconfig.h include outside the ENET_MULTIPLE_PORT guard for hpm6750evk and hpm6750evk2 so configuration macros are available regardless of ENET settings. * [bsp][raspi3] select clock time for systimer * [bsp][hpm5300evk] Trim trailing blank line * [bsp][hpm5301evklite] Trim trailing blank line * [bsp][hpm5e00evk] Trim trailing blank line * [bsp][hpm6200evk] Trim trailing blank line * [bsp][hpm6300evk] Trim trailing blank line * [bsp][hpm6750evk] Trim trailing blank line * [bsp][hpm6750evk2] Trim trailing blank line * [bsp][hpm6750evkmini] Trim trailing blank line * [bsp][hpm6800evk] Trim trailing blank line * [bsp][hpm6e00evk] Trim trailing blank line * [bsp][nxp] switch lpc178x to gcc and remove mcx timer source * [bsp][stm32] fix the CONFIG_RT_USING_CLOCK_TIME issue. * [docs][clock_time] add clock time documentation * [docs][clock_time] Update clock time subsystem documentation - Update device driver index to use correct page reference - Clarify upper layer responsibilities in architecture overview - Update README to describe POSIX/libc, Soft RTC, and device driver usage - Refine architecture diagram with improved layout and color scheme - Remove obsolete clock_timer.md file * [kernel][utest] Trim trailing space * [clock_time] Fix hrtimer wrap handling * [clock_time] fix the static rt_inline issue * [clock_time] fix the rt_clock_hrtimer_control result issue
TKM32F499
简介
本文档为 TKM32F499 液晶屏评估板的 BSP (板级支持包) 说明。
主要内容如下：
- 开发板资源介绍
- BSP 快速上手
- 进阶使用方法
通过阅读快速上手章节开发者可以快速地上手该 BSP，将 RT-Thread 运行在开发板上。在进阶使用指南章节，将会介绍更多高级功能，帮助开发者利用 RT-Thread 驱动更多板载资源。
开发板介绍
TKM32F499 液晶屏评估板是深圳市好钜润科技有限公司官方推出的开发板，搭载 TKM32F499 芯片，基于 ARM Cortex-M4 内核，最高主频 240 MHz，具有丰富的板载资源，可以充分发挥 TKM32F499 的芯片性能。
开发板外观如下图所示：
该开发板常用 板载资源 如下：
- MCU：TKM32F499，主频 240MHz ，8MB RAM，带FPU，DMA 单次 42 亿点
- 常用外设
- LED：3个，LD1（PD8），LD2（PB14），LD3（PB15）
- 按键：5 向按键 1 个，RESET
- 常用接口：TK80接口（向下兼容老式8080接口）
官方资料：TKM32F499评估板参考资料
更多相关信息资料见官网详情页：TKM32F499芯片及评测
外设支持
本 BSP 目前对外设的支持情况如下：
| 片上外设 | 支持情况 | 备注 |
|---|---|---|
| GPIO | 支持 | |
| UART | 支持 | UART1、UART2 |
| SPI | 暂不支持 | |
| I2C | 暂不支持 | |
| RTC | 暂不支持 | |
| PWM | 暂不支持 |
使用说明
使用说明分为如下两个章节：
-
快速上手
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 。
-
进阶使用
本章节是为需要在 RT-Thread 操作系统上使用更多开发板资源的开发者准备的。通过使用 ENV 工具对 BSP 进行配置，可以开启更多板载资源，实现更多高级功能。
快速上手
本 BSP 为开发者提供 MDK5 工程。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，连接串口1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。
可以通过 bootloader 自带 usb下载，通过 u 盘方式下载：
- 方法一：五向按键向上推（按下 PA1 按键，又名 APP 键） ，同时按一下复位（注意，松手时，先松复位，再松五向按键），然后点一下 KEIL 的下载按钮即可
- 方法二：向上推， 同时按一下复位，然后先松开复位再松开向上按键， 就会进入程序下载模式， 电脑会弹出一个 TK499_V2 盘符的 U 盘，把 KEIL 工程目录下生成的 bin 程序拖进 U盘就行
本工程下自带官方的 bootloader ，通过把五向按键向左推（按下 PA13 按键，又名 BOOT 键） ， 同时再按一下复位，然后先松开复位再松开向上按键就进入了 Bootloader 下载模式。这时会弹出一个盘符为 TK499 的 U 盘，把本工程下的 Bootloader.bin 拖进去即可重新烧录 bootloader
注意：
- bootloader 默认的波特率为460800，所以会在启动 rtthread 时存在乱码
- 该芯片有个致命问题：复位引脚不能正常复位，断电重启了才可以。如有莫名其妙的问题请断电重启。出处https://www.amobbs.com/thread-5748003-1-1.html
运行结果
下载程序成功之后，系统会自动运行，橘黄色 LD2 会周期性闪烁。
USB 虚拟 COM 端口默认连接串口 1，在终端工具里打开相应的串口（115200-8-1-N），复位设备后，可以看到 RT-Thread 的输出信息:
\ | /
- RT - Thread Operating System
/ | \ 4.0.4 build Oct 14 2021
2006 - 2021 Copyright by rt-thread team
msh >
- 注意：官方 bootloader 使用的是串口1，且波特率为460800，所以会在一开始有一段乱码
进阶使用
此 BSP 默认只开启了 GPIO 和 串口1 的功能，更多高级功能需要利用 ENV 工具对 BSP 进行配置，步骤如下：
-
在 bsp 下打开 env 工具。
-
输入
menuconfig命令配置工程，配置好之后保存退出。 -
输入
pkgs --update命令更新软件包。 -
输入
scons --target=mdk5命令重新生成工程。
联系人信息
维护人：NU-LL