Add bsp apollo2

bsp/apollo2/board/Sconscript

@@ -0,0 +1,14 @@
+Import('RTT_ROOT')
+Import('rtconfig')
+from building import *
+
+cwd     = GetCurrentDir()
+src	= Glob('*.c')
+CPPPATH = [cwd]
+
+#remove other no use files
+#SrcRemove(src, '*.c')
+
+group = DefineGroup('Board', src, depend = [''], CPPPATH = CPPPATH)
+
+Return('group')

bsp/apollo2/board/board.c

@@ -0,0 +1,146 @@
+/*
+ * File      : board.c
+ * This file is part of RT-Thread RTOS
+ * COPYRIGHT (C) 2009 RT-Thread Develop Team
+ *
+ * The license and distribution terms for this file may be
+ * found in the file LICENSE in this distribution or at
+ * http://www.rt-thread.org/license/LICENSE
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2017-09-14     Haley        first implementation
+ */
+#include "board.h"
+
+#include <rtthread.h>
+#include <rthw.h>
+
+#include "am_mcu_apollo.h"
+#include "hal/am_hal_clkgen.h"
+#include "hal/am_hal_cachectrl.h"
+#include "hw_uart.h"
+
+#define TICK_RATE_HZ  RT_TICK_PER_SECOND
+#define SYSTICK_CLOCK_HZ  ( 32768UL )
+#define WAKE_INTERVAL ( (uint32_t) ((SYSTICK_CLOCK_HZ / TICK_RATE_HZ)) )
+
+/**
+ * This is the timer interrupt service routine.
+ *
+ */
+void am_stimer_cmpr0_isr(void)
+{
+    /* Check the timer interrupt status */
+    am_hal_stimer_int_clear(AM_HAL_STIMER_INT_COMPAREA);
+    am_hal_stimer_compare_delta_set(0, WAKE_INTERVAL);
+	
+    if (rt_thread_self() != RT_NULL)
+    {
+    	/* enter interrupt */
+    	rt_interrupt_enter();
+
+    	rt_tick_increase();
+
+    	/* leave interrupt */
+    	rt_interrupt_leave();
+    }
+}
+
+/**
+ * This is the SysTick Configure.
+ *
+ */
+void SysTick_Configuration(void)
+{
+		/* Set the main clk */
+    am_hal_clkgen_sysclk_select(AM_HAL_CLKGEN_SYSCLK_MAX);
+	
+    /* Enable compare A interrupt in STIMER */
+    am_hal_stimer_int_enable(AM_HAL_STIMER_INT_COMPAREA);
+
+    /* Enable the timer interrupt in the NVIC */
+    am_hal_interrupt_enable(AM_HAL_INTERRUPT_STIMER_CMPR0);
+
+    /* Configure the STIMER and run */
+    am_hal_stimer_config(AM_HAL_STIMER_CFG_CLEAR | AM_HAL_STIMER_CFG_FREEZE);
+    am_hal_stimer_compare_delta_set(0, WAKE_INTERVAL);
+    am_hal_stimer_config(AM_HAL_STIMER_XTAL_32KHZ |
+                         AM_HAL_STIMER_CFG_COMPARE_A_ENABLE);
+}
+
+/**
+ * This is the CacheCtrl Enable.
+ *
+ */
+void CacheCtrl_Enable(void)
+{
+    am_hal_cachectrl_enable(&am_hal_cachectrl_defaults);
+}
+
+/**
+ * This is the low power operation.
+ * This function enables several power-saving features of the MCU, and
+ * disables some of the less-frequently used peripherals. It also sets the
+ * system clock to 24 MHz.
+ */
+void am_low_power_init(void)
+{
+    /* Enable internal buck converters */
+    am_hal_pwrctrl_bucks_init();
+
+    /* Initialize for low power in the power control block */
+    am_hal_pwrctrl_low_power_init();
+
+    /* Turn off the voltage comparator as this is enabled on reset */
+    am_hal_vcomp_disable();
+
+    /* Run the RTC off the LFRC */
+    am_hal_rtc_osc_select(AM_HAL_RTC_OSC_LFRC);
+
+    /* Stop the XT and LFRC */
+    am_hal_clkgen_osc_stop(AM_HAL_CLKGEN_OSC_XT);
+    // am_hal_clkgen_osc_stop(AM_HAL_CLKGEN_OSC_LFRC);
+
+    /* Disable the RTC */
+    am_hal_rtc_osc_disable();
+}
+
+/**
+ * This is the deep power save.
+ *
+ */
+void deep_power_save(void)
+{
+		am_hal_sysctrl_sleep(AM_HAL_SYSCTRL_SLEEP_DEEP);
+}
+
+/**
+ * This function will initial APOLLO2 board.
+ */
+void rt_hw_board_init(void)
+{
+		/* Set the clock frequency */
+    SysTick_Configuration();
+	
+		/* Set the default cache configuration */
+		CacheCtrl_Enable();
+
+    /* Configure the board for low power operation */
+    //am_low_power_init();
+	
+#ifdef RT_USING_IDLE_HOOK	
+    rt_thread_idle_sethook(deep_power_save);  
+#endif
+	
+#ifdef RT_USING_CONSOLE
+		rt_hw_uart_init();
+    rt_console_set_device(RT_CONSOLE_DEVICE_NAME);
+#endif
+
+#ifdef RT_USING_COMPONENTS_INIT
+    rt_components_board_init();
+#endif
+}
+
+/*@}*/

bsp/apollo2/board/board.h

@@ -0,0 +1,17 @@
+#ifndef __BOARD_H_
+#define __BOARD_H_
+
+#include <rtthread.h>
+
+// <o> Internal SRAM memory size[Kbytes] <8-256>
+//	<i>Default: 256
+#define AM_SRAM_SIZE         256
+#define AM_SRAM_END          (0x10000000 + AM_SRAM_SIZE * 1024)
+
+/* USART driver select. */
+#define RT_USING_UART0
+#define RT_USING_UART1
+
+void rt_hw_board_init(void);
+
+#endif /* __BOARD_H__ */

bsp/apollo2/board/hw_led.c

@@ -0,0 +1,302 @@
+/*
+ * File      : hw_led.c
+ * This file is part of RT-Thread RTOS
+ * COPYRIGHT (C) 2017, RT-Thread Development Team
+ *
+ * The license and distribution terms for this file may be
+ * found in the file LICENSE in this distribution or at
+ * http://www.rt-thread.org/license/LICENSE
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2017-09-14     Haley        the first version
+ */
+
+#include <rtthread.h>
+#include "am_mcu_apollo.h"
+#include "hw_led.h"
+
+#define AM_GPIO_LED0                46
+#define AM_GPIO_LED1                47
+#define AM_GPIO_LED2                48
+#define AM_GPIO_LED3                49
+
+#define AM_NUM_LEDS             4
+
+rt_hw_led_t am_psLEDs[AM_NUM_LEDS] =
+{
+    {AM_GPIO_LED0, AM_LED_ON_LOW | AM_LED_POL_DIRECT_DRIVE_M},
+    {AM_GPIO_LED1, AM_LED_ON_LOW | AM_LED_POL_DIRECT_DRIVE_M},
+    {AM_GPIO_LED2, AM_LED_ON_LOW | AM_LED_POL_DIRECT_DRIVE_M},
+    {AM_GPIO_LED3, AM_LED_ON_LOW | AM_LED_POL_DIRECT_DRIVE_M},
+};
+
+/**
+ * @brief Configures the necessary pins for an array of LEDs
+ *
+ * @param LEDNum is the LED number.
+ *
+ * This function configures a GPIO to drive an LED in a low-power way.
+ *
+ * @return None.
+ */
+void rt_hw_led_init(rt_uint32_t LEDNum)
+{
+		rt_hw_led_t *psLED = am_psLEDs + LEDNum;
+	
+    /* Handle Direct Drive Versus 3-State (with pull-up or no buffer) */
+    if ( AM_LED_POL_DIRECT_DRIVE_M & psLED->Polarity )
+    {
+        /* Configure the pin as a push-pull GPIO output */
+        am_hal_gpio_pin_config(psLED->GPIONumber, AM_HAL_GPIO_OUTPUT);
+
+        /* Enable the output driver, and set the output value to the LEDs "ON" state */
+        am_hal_gpio_out_enable_bit_set(psLED->GPIONumber);
+        am_hal_gpio_out_bit_replace(psLED->GPIONumber,
+                                    psLED->Polarity &
+                                    AM_LED_POL_DIRECT_DRIVE_M);
+    }
+    else
+    {
+        /* Configure the pin as a tri-state GPIO */
+        am_hal_gpio_pin_config(psLED->GPIONumber, AM_HAL_GPIO_3STATE);
+
+        /* Disable the output driver, and set the output value to the LEDs "ON" state */
+        am_hal_gpio_out_enable_bit_clear(psLED->GPIONumber);
+        am_hal_gpio_out_bit_replace(psLED->GPIONumber,
+                                    psLED->Polarity &
+                                    AM_LED_POL_DIRECT_DRIVE_M );
+    }
+}
+
+/**
+ * @brief Configures the necessary pins for an array of LEDs
+ *
+ * @param NumLEDs is the total number of LEDs in the array.
+ *
+ * This function configures the GPIOs for an array of LEDs.
+ *
+ * @return None.
+ */
+void rt_hw_led_array_init(rt_uint32_t NumLEDs)
+{
+    /* Loop through the list of LEDs, configuring each one individually */
+    for ( int i = 0; i < NumLEDs; i++ )
+    {
+        rt_hw_led_init(i);
+    }
+}
+
+/**
+ * @brief Disables an array of LEDs
+ *
+ * @param NumLEDs is the total number of LEDs in the array.
+ *
+ * This function disables the GPIOs for an array of LEDs.
+ *
+ * @return None.
+ */
+void rt_hw_led_array_disable(rt_uint32_t NumLEDs)
+{
+		rt_hw_led_t *psLEDs = am_psLEDs;
+	
+    /* Loop through the list of LEDs, configuring each one individually */
+    for ( int i = 0; i < NumLEDs; i++ )
+    {
+        am_hal_gpio_pin_config((psLEDs + i)->GPIONumber, AM_HAL_GPIO_DISABLE);
+    }
+}
+
+/**
+ * @brief Turns on the requested LED.
+ *
+ * @param LEDNum is the LED number for the light to turn on.
+ *
+ * This function turns on a single LED.
+ *
+ * @return None.
+ */
+void rt_hw_led_on(rt_uint32_t LEDNum)
+{
+		rt_hw_led_t *psLEDs = am_psLEDs;
+	
+    /* Handle Direct Drive Versus 3-State (with pull-up or no buffer) */
+    if ( AM_LED_POL_DIRECT_DRIVE_M & psLEDs[LEDNum].Polarity )
+    {
+        /* Set the output to the correct state for the LED */
+        am_hal_gpio_out_bit_replace(psLEDs[LEDNum].GPIONumber,
+                                    psLEDs[LEDNum].Polarity &
+                                    AM_LED_POL_POLARITY_M );
+    }
+    else
+    {
+        /* Turn on the output driver for the LED */
+        am_hal_gpio_out_enable_bit_set(psLEDs[LEDNum].GPIONumber);
+    }
+}
+
+/**
+ * @brief Turns off the requested LED.
+ *
+ * @param LEDNum is the LED number for the light to turn off.
+ *
+ * This function turns off a single LED.
+ *
+ * @return None.
+ */
+void rt_hw_led_off(rt_uint32_t LEDNum)
+{
+		rt_hw_led_t *psLEDs = am_psLEDs;
+
+    /* Handle Direct Drive Versus 3-State (with pull-up or no buffer) */
+    if ( AM_LED_POL_DIRECT_DRIVE_M & psLEDs[LEDNum].Polarity )
+    {
+        /* Set the output to the correct state for the LED */
+        am_hal_gpio_out_bit_replace(psLEDs[LEDNum].GPIONumber,
+                                    !(psLEDs[LEDNum].Polarity &
+                                      AM_LED_POL_POLARITY_M) );
+    }
+    else
+    {
+        /* Turn off the output driver for the LED */
+        am_hal_gpio_out_enable_bit_clear(psLEDs[LEDNum].GPIONumber);
+    }
+}
+
+/**
+ * @brief Toggles the requested LED.
+ *
+ * @param LEDNum is the LED number for the light to toggle.
+ *
+ * This function toggles a single LED.
+ *
+ * @return None.
+ */
+void rt_hw_led_toggle(rt_uint32_t LEDNum)
+{
+		rt_hw_led_t *psLEDs = am_psLEDs;
+
+    /* Handle Direct Drive Versus 3-State (with pull-up or no buffer) */
+    if ( AM_LED_POL_DIRECT_DRIVE_M & psLEDs[LEDNum].Polarity )
+    {
+        am_hal_gpio_out_bit_toggle(psLEDs[LEDNum].GPIONumber);
+    }
+    else
+    {
+        /* Check to see if the LED pin is enabled */
+        if ( am_hal_gpio_out_enable_bit_get(psLEDs[LEDNum].GPIONumber) )
+        {
+            /* If it was enabled, turn if off */
+            am_hal_gpio_out_enable_bit_clear(psLEDs[LEDNum].GPIONumber);
+        }
+        else
+        {
+            /* If it was not enabled, turn if on */
+            am_hal_gpio_out_enable_bit_set(psLEDs[LEDNum].GPIONumber);
+        }
+    }
+}
+
+/**
+ * @brief Gets the state of the requested LED.
+ *
+ * @param LEDNum is the LED to check.
+ *
+ * This function checks the state of a single LED.
+ *
+ * @return 1(true) if the LED is on.
+ */
+int rt_hw_led_get(rt_uint32_t LEDNum)
+{
+		rt_hw_led_t *psLEDs = am_psLEDs;
+
+    /* Handle Direct Drive Versus 3-State (with pull-up or no buffer) */
+    if ( AM_LED_POL_DIRECT_DRIVE_M & psLEDs[LEDNum].Polarity )
+    {
+        /* Mask to the GPIO bit position for this GPIO number */
+        uint64_t ui64Mask = 0x01l << psLEDs[LEDNum].GPIONumber;
+
+        /* Extract the state of this bit and return it */
+        return !!(am_hal_gpio_input_read() & ui64Mask);
+    }
+    else
+    {
+        return am_hal_gpio_out_enable_bit_get(
+                    psLEDs[LEDNum].GPIONumber);
+    }
+}
+
+/**
+ * @brief Display a binary value using LEDs.
+ *
+ * @param NumLEDs is the number of LEDs in the array.
+ * @param Value is the value to display on the LEDs.
+ *
+ * This function displays a value in binary across an array of LEDs.
+ *
+ * @return None.
+ */
+void rt_hw_led_array_out(rt_uint32_t NumLEDs, rt_uint32_t Value)
+{
+    for ( int i = 0; i < NumLEDs; i++ )
+    {
+        if ( Value & (1 << i) )
+        {
+            rt_hw_led_on(i);
+        }
+        else
+        {
+            rt_hw_led_off(i);
+        }
+    }
+}
+
+#ifdef RT_USING_FINSH
+#include <finsh.h>
+static rt_uint8_t led_inited = 0;
+void led(rt_uint32_t led, rt_uint32_t value)
+{
+    /* init led configuration if it's not inited. */
+    if (!led_inited)
+    {
+//        rt_hw_led_init(0);
+//				rt_hw_led_init(1);
+        led_inited = 1;
+    }
+
+    if ( led == 0 )
+    {
+        /* set led status */
+        switch (value)
+        {
+        case 0:
+            rt_hw_led_off(0);
+            break;
+        case 1:
+            rt_hw_led_on(0);
+            break;
+        default:
+            break;
+        }
+    }
+
+    if ( led == 1 )
+    {
+        /* set led status */
+        switch (value)
+        {
+        case 0:
+            rt_hw_led_off(1);
+            break;
+        case 1:
+            rt_hw_led_on(1);
+            break;
+        default:
+            break;
+        }
+    }
+}
+FINSH_FUNCTION_EXPORT(led, set led[0 - 1] on[1] or off[0].)
+#endif
+
+/*@}*/

bsp/apollo2/board/hw_led.h

@@ -0,0 +1,60 @@
+/*
+ * File      : hw_led.h
+ * This file is part of RT-Thread RTOS
+ * COPYRIGHT (C) 2017, RT-Thread Development Team
+ *
+ * The license and distribution terms for this file may be
+ * found in the file LICENSE in this distribution or at
+ * http://www.rt-thread.org/license/LICENSE
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2017-09-14     Haley        the first version
+ */
+ 
+#ifndef __HW_LED_H
+#define __HW_LED_H
+
+#include <rtthread.h>
+	
+/**
+ * @brief LED polarity macros
+ *
+ */
+#define AM_LED_POL_POLARITY_M       0x1
+#define AM_LED_ON_HIGH              0x1
+#define AM_LED_ON_LOW               0x0
+
+/**
+ * @brief LED direct drive indicator macro
+ *	Or this in with the polarity value to use the GPIO DATA register instead of
+ *	the GPIO DATA ENABLE register to directly drive an LED buffer.
+ */
+#define AM_LED_POL_DIRECT_DRIVE_M   0x2
+
+
+/**
+ * @brief Structure for keeping track of LEDs
+ *
+ */
+typedef struct
+{
+    rt_uint32_t GPIONumber;
+    rt_uint32_t Polarity;
+}
+rt_hw_led_t;
+
+/**
+ * @brief External function definitions
+ *
+ */
+void rt_hw_led_init(rt_uint32_t LEDNum);
+void rt_hw_led_array_init(rt_uint32_t NumLEDs);
+void rt_hw_led_array_disable(rt_uint32_t NumLEDs);
+void rt_hw_led_on(rt_uint32_t LEDNum);
+void rt_hw_led_off(rt_uint32_t LEDNum);
+void rt_hw_led_toggle(rt_uint32_t LEDNum);
+int rt_hw_led_get(rt_uint32_t LEDNum);
+void rt_hw_led_array_out(rt_uint32_t NumLEDs, rt_uint32_t Value);
+
+#endif // __HW_LED_H

bsp/apollo2/board/hw_uart.c

@@ -0,0 +1,413 @@
+/*
+ * File      : hw_uart.c
+ * This file is part of RT-Thread RTOS
+ * COPYRIGHT (C) 2017, RT-Thread Development Team
+ *
+ * The license and distribution terms for this file may be
+ * found in the file LICENSE in this distribution or at
+ * http://www.rt-thread.org/license/LICENSE
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2017-09-15     Haley        the first version
+ */
+ 
+#include "am_mcu_apollo.h"
+#include "hw_uart.h"
+#include "board.h"
+#include <rtdevice.h>
+
+/* USART0 */
+#define AM_UART0_INST         0
+
+#define UART0_GPIO_RX         2
+#define UART0_GPIO_CFG_RX     AM_HAL_PIN_2_UART0RX
+#define UART0_GPIO_TX         1
+#define UART0_GPIO_CFG_TX     AM_HAL_PIN_1_UART0TX
+
+/* USART1 */
+#define AM_UART1_INST         1
+
+#define UART1_GPIO_RX         9
+#define UART1_GPIO_CFG_RX     AM_HAL_PIN_9_UART1RX
+#define UART1_GPIO_TX         8
+#define UART1_GPIO_CFG_TX     AM_HAL_PIN_8_UART1TX
+
+/* AM uart driver */
+struct am_uart
+{
+    uint32_t uart_device;
+		uint32_t uart_interrupt;
+};
+
+/**
+ * @brief UART configuration settings
+ *
+ */
+am_hal_uart_config_t g_sUartConfig =
+{
+    .ui32BaudRate = 115200,
+    .ui32DataBits = AM_HAL_UART_DATA_BITS_8,
+    .bTwoStopBits = false,
+    .ui32Parity   = AM_HAL_UART_PARITY_NONE,
+    .ui32FlowCtrl = AM_HAL_UART_FLOW_CTRL_NONE,
+};
+
+/**
+ * @brief Enable the UART
+ *
+ * @param Uart driver
+ *
+ * This function is Enable the UART
+ *
+ * @return None.
+ */
+static void rt_hw_uart_enable(struct am_uart* uart)
+{
+    /* Enable the UART clock */
+    am_hal_uart_clock_enable(uart->uart_device);
+
+    /* Enable the UART */
+    am_hal_uart_enable(uart->uart_device);
+
+#if defined(RT_USING_UART0)	
+    /* Make sure the UART RX and TX pins are enabled */
+		am_hal_gpio_pin_config(UART0_GPIO_TX, UART0_GPIO_CFG_TX);
+		am_hal_gpio_pin_config(UART0_GPIO_RX, UART0_GPIO_CFG_RX | AM_HAL_GPIO_PULL12K);
+#endif /* RT_USING_UART0 */	
+	
+#if defined(RT_USING_UART1)	
+    /* Make sure the UART RX and TX pins are enabled */
+		am_hal_gpio_pin_config(UART1_GPIO_TX, UART1_GPIO_CFG_TX);
+		am_hal_gpio_pin_config(UART1_GPIO_RX, UART1_GPIO_CFG_RX | AM_HAL_GPIO_PULL12K);
+#endif /* RT_USING_UART1 */	
+}
+
+/**
+ * @brief Disable the UART
+ *
+ * @param Uart driver
+ *
+ * This function is Disable the UART
+ *
+ * @return None.
+ */
+static void rt_hw_uart_disable(struct am_uart* uart)
+{
+		/* Clear all interrupts before sleeping as having a pending UART interrupt burns power */
+		am_hal_uart_int_clear(uart->uart_device, 0xFFFFFFFF);
+
+		/* Disable the UART */
+		am_hal_uart_disable(uart->uart_device);
+	
+#if defined(RT_USING_UART0)	
+    /* Disable the UART pins */
+		am_hal_gpio_pin_config(UART0_GPIO_TX, AM_HAL_PIN_DISABLE);
+		am_hal_gpio_pin_config(UART0_GPIO_RX, AM_HAL_PIN_DISABLE);
+#endif /* RT_USING_UART0 */	
+	
+#if defined(RT_USING_UART1)	
+    /* Disable the UART pins */
+		am_hal_gpio_pin_config(UART1_GPIO_TX, AM_HAL_PIN_DISABLE);
+		am_hal_gpio_pin_config(UART1_GPIO_RX, AM_HAL_PIN_DISABLE);
+#endif /* RT_USING_UART1 */		
+	
+		/* Disable the UART clock */
+		am_hal_uart_clock_disable(uart->uart_device);
+}
+
+/**
+ * @brief UART-based string print function.
+ *
+ * @param Send buff
+ *
+ * This function is used for printing a string via the UART, which for some
+ * MCU devices may be multi-module.
+ *
+ * @return None.
+ */
+void rt_hw_uart_send_string(char *pcString)
+{
+    am_hal_uart_string_transmit_polled(AM_UART0_INST, pcString);
+	
+		/* Wait until busy bit clears to make sure UART fully transmitted last byte */
+		while ( am_hal_uart_flags_get(AM_UART0_INST) & AM_HAL_UART_FR_BUSY );
+}
+
+static rt_err_t am_configure(struct rt_serial_device *serial, struct serial_configure *cfg)
+{
+    struct am_uart* uart;
+
+    RT_ASSERT(serial != RT_NULL);
+    RT_ASSERT(cfg != RT_NULL);
+
+    uart = (struct am_uart *)serial->parent.user_data;	
+
+		RT_ASSERT(uart != RT_NULL);
+	
+		/* Get the configure */
+		g_sUartConfig.ui32BaudRate = cfg->baud_rate;
+		g_sUartConfig.ui32DataBits = cfg->data_bits;
+	
+    if (cfg->stop_bits == STOP_BITS_1)
+        g_sUartConfig.bTwoStopBits = false;
+    else if (cfg->stop_bits == STOP_BITS_2)
+        g_sUartConfig.bTwoStopBits = true;
+
+		g_sUartConfig.ui32Parity = cfg->parity;
+		g_sUartConfig.ui32FlowCtrl = AM_HAL_UART_PARITY_NONE;
+	
+    /* Configure the UART */
+    am_hal_uart_config(uart->uart_device, &g_sUartConfig);
+
+    /* Enable the UART */
+    am_hal_uart_enable(uart->uart_device);	
+	
+		return RT_EOK;
+}
+
+static rt_err_t am_control(struct rt_serial_device *serial, int cmd, void *arg)
+{
+    struct am_uart* uart;
+    //rt_uint32_t ctrl_arg = (rt_uint32_t)(arg);
+
+    RT_ASSERT(serial != RT_NULL);
+    uart = (struct am_uart *)serial->parent.user_data;
+
+		RT_ASSERT(uart != RT_NULL);
+	
+    switch (cmd)
+    {
+        /* disable interrupt */
+				case RT_DEVICE_CTRL_CLR_INT:
+						rt_hw_uart_disable(uart);
+						break;
+						/* enable interrupt */
+				case RT_DEVICE_CTRL_SET_INT:
+						rt_hw_uart_enable(uart);
+						break;
+						/* UART config */
+				case RT_DEVICE_CTRL_CONFIG :
+						break;
+    }
+		
+		return RT_EOK;
+}
+
+static int am_putc(struct rt_serial_device *serial, char c)
+{
+    struct am_uart* uart;
+
+    RT_ASSERT(serial != RT_NULL);
+    uart = (struct am_uart *)serial->parent.user_data;
+	
+		RT_ASSERT(uart != RT_NULL);
+	
+		am_hal_uart_char_transmit_polled(uart->uart_device, c);
+	
+		return 1;
+}
+	
+static int am_getc(struct rt_serial_device *serial)
+{
+		char c;
+		int ch;
+		struct am_uart* uart;
+	
+		RT_ASSERT(serial != RT_NULL);
+    uart = (struct am_uart *)serial->parent.user_data;
+
+		RT_ASSERT(uart != RT_NULL);
+	
+    ch = -1;
+    if (am_hal_uart_flags_get(uart->uart_device) & AM_HAL_UART_FR_RX_FULL)
+    {
+				am_hal_uart_char_receive_polled(uart->uart_device, &c);
+				ch = c & 0xff;
+    }
+		
+		return ch;
+}
+
+/**
+ * Uart common interrupt process. This need add to uart ISR.
+ *
+ * @param serial serial device
+ */
+static void uart_isr(struct rt_serial_device *serial)
+{
+		uint32_t status;
+	
+		RT_ASSERT(serial != RT_NULL);
+		struct am_uart *uart = (struct am_uart *) serial->parent.user_data;
+	
+		RT_ASSERT(uart != RT_NULL);
+
+    /* Read the interrupt status */
+    status = am_hal_uart_int_status_get(uart->uart_device, false);	
+	
+		//rt_kprintf("status is %d\r\n", status);
+	
+		/* Clear the UART interrupt */
+		am_hal_uart_int_clear(uart->uart_device, status);
+
+    if (status & (AM_HAL_UART_INT_RX_TMOUT))
+    {
+        rt_hw_serial_isr(serial, RT_SERIAL_EVENT_RX_TIMEOUT);
+    }
+
+    if (status & AM_HAL_UART_INT_RX)
+    {	
+				rt_hw_serial_isr(serial, RT_SERIAL_EVENT_RX_IND);
+		}
+
+		if (status & AM_HAL_UART_INT_TX)
+    {	
+				//rt_hw_serial_isr(serial, RT_SERIAL_EVENT_TX_DONE);
+		}	
+}
+
+static const struct rt_uart_ops am_uart_ops =
+{
+    am_configure,
+    am_control,
+    am_putc,
+    am_getc,
+};
+
+#if defined(RT_USING_UART0)
+/* UART0 device driver structure */
+struct am_uart uart0 =
+{
+    AM_UART0_INST,
+		AM_HAL_INTERRUPT_UART0
+};
+static struct rt_serial_device serial0;
+
+void am_uart0_isr(void)
+{
+    /* enter interrupt */
+    rt_interrupt_enter();
+
+    uart_isr(&serial0);
+
+    /* leave interrupt */
+    rt_interrupt_leave();
+}
+#endif /* RT_USING_UART0 */
+
+#if defined(RT_USING_UART1)
+/* UART1 device driver structure */
+struct am_uart uart1 =
+{
+    AM_UART1_INST,
+		AM_HAL_INTERRUPT_UART1
+};
+static struct rt_serial_device serial1;
+
+void am_uart1_isr(void)
+{
+    /* enter interrupt */
+    rt_interrupt_enter();
+	
+    uart_isr(&serial1);
+
+    /* leave interrupt */
+    rt_interrupt_leave();
+}
+#endif /* RT_USING_UART1 */
+
+static void GPIO_Configuration(void)
+{
+#if defined(RT_USING_UART0)	
+    /* Make sure the UART RX and TX pins are enabled */
+		am_hal_gpio_pin_config(UART0_GPIO_TX, UART0_GPIO_CFG_TX);
+		am_hal_gpio_pin_config(UART0_GPIO_RX, UART0_GPIO_CFG_RX | AM_HAL_GPIO_PULL12K);
+#endif /* RT_USING_UART0 */	
+	
+#if defined(RT_USING_UART1)	
+    /* Make sure the UART RX and TX pins are enabled */
+		am_hal_gpio_pin_config(UART1_GPIO_TX, UART1_GPIO_CFG_TX);
+		am_hal_gpio_pin_config(UART1_GPIO_RX, UART1_GPIO_CFG_RX | AM_HAL_GPIO_PULL12K);
+#endif /* RT_USING_UART1 */		
+}
+
+static void RCC_Configuration(struct am_uart* uart)
+{
+    /* Power on the selected UART */
+    am_hal_uart_pwrctrl_enable(uart->uart_device);
+
+    /* Start the UART interface, apply the desired configuration settings */
+    am_hal_uart_clock_enable(uart->uart_device);
+
+    /* Disable the UART before configuring it */
+    am_hal_uart_disable(uart->uart_device);		
+	
+    /* Configure the UART */
+    am_hal_uart_config(uart->uart_device, &g_sUartConfig);	
+	
+    /* Enable the UART */
+    am_hal_uart_enable(uart->uart_device);	
+
+    /* Enable the UART FIFO */
+    //am_hal_uart_fifo_config(uart->uart_device, AM_HAL_UART_TX_FIFO_1_2 | AM_HAL_UART_RX_FIFO_1_2);		
+}
+
+static void NVIC_Configuration(struct am_uart* uart)
+{
+		/* Enable interrupts */
+		am_hal_uart_int_enable(uart->uart_device, AM_HAL_UART_INT_RX);
+	
+		/* Enable the uart interrupt in the NVIC */
+		am_hal_interrupt_enable(uart->uart_interrupt);
+		am_hal_uart_int_clear(uart->uart_device, 0xFFFFFFFF);
+}
+
+/**
+ * @brief Initialize the UART
+ *
+ * This function initialize the UART
+ *
+ * @return None.
+ */
+void rt_hw_uart_init(void)
+{
+    struct am_uart* uart;
+    struct serial_configure config = RT_SERIAL_CONFIG_DEFAULT;	
+
+    GPIO_Configuration();
+	
+#if defined(RT_USING_UART0)
+    uart = &uart0;
+    config.baud_rate = BAUD_RATE_115200;
+
+		RCC_Configuration(uart);	
+		NVIC_Configuration(uart);	
+	
+    serial0.ops    = &am_uart_ops;
+    serial0.config = config;	
+	
+    /* register UART1 device */
+    rt_hw_serial_register(&serial0, "uart0",
+                          RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_INT_RX |
+                          RT_DEVICE_FLAG_INT_TX, uart);	
+#endif /* RT_USING_UART0 */
+
+#if defined(RT_USING_UART1)
+    uart = &uart1;
+    config.baud_rate = BAUD_RATE_115200;
+
+		RCC_Configuration(uart);	
+		NVIC_Configuration(uart);	    
+		
+    serial1.ops    = &am_uart_ops;
+    serial1.config = config;	
+	
+    /* register UART1 device */
+    rt_hw_serial_register(&serial1, "uart1",
+                          RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_INT_RX |
+                          RT_DEVICE_FLAG_INT_TX, uart);	
+#endif /* RT_USING_UART1 */
+}
+
+/*@}*/

bsp/apollo2/board/hw_uart.h

@@ -0,0 +1,23 @@
+/*
+ * File      : hw_uart.c
+ * This file is part of RT-Thread RTOS
+ * COPYRIGHT (C) 2017, RT-Thread Development Team
+ *
+ * The license and distribution terms for this file may be
+ * found in the file LICENSE in this distribution or at
+ * http://www.rt-thread.org/license/LICENSE
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2017-09-14     Haley        the first version
+ */
+ 
+#ifndef __HW_UART_H_
+#define __HW_UART_H_
+
+#include <rtthread.h>
+
+void rt_hw_uart_init(void);
+void rt_hw_uart_send_string(char *pcString);
+
+#endif // __HW_UART_H_