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【GD32F310G-START】移植RT_Thread

已有 143 次阅读2022-5-23 19:26

【前言】移植RT_Thread是我的评测项目之一,具体RT_Thread的好处在这里不细说,这里详细讲述如何实现移植。

【移植】

1、将官方提供的例程GPIO_Ruing_LED文件夹复制一份备用,然后重命名01_GPIO_Runing_LED_RT

   2、打开例程,然后导出为MDK5.0的工程:

   3、再次打开例程,单击图示的地方,配置RTT

  4、钩选kernel、shell两个选项,如下图所示:  5、点击OK后,项目自动加入RTOS目录:

  6、编辑 board.c,修改 rt_hw_board_init 函数,新增 systick_config()。

 修改为:

void rt_hw_board_init(void)
{
 #include "systick.h"
  systick_config();
#ifdef RT_USING_COMPONENTS_INIT
    rt_components_board_init();
#endif

#if defined(RT_USING_USER_MAIN) && defined(RT_USING_HEAP)
    rt_system_heap_init(rt_heap_begin_get(), rt_heap_end_get());
#endif
}

7、修改 board.c 中的堆栈大小,避免链接时报错。原来的是:#define RT_HEAP_SIZE (15*1024),现在修改为:#define RT_HEAP_SIZE (4*1024)

8、在 board.c 中新增 SysTick_Handler()

  9、注释 gd32f3x0_it.c 中的 HardFault_Handler、PendSV_Handler 和 SysTick_Handler。

  10、修改 rtconfig.h,取消#include"finsh_config.h"前的注释

   11、修改finish_port.c中的uart0的功能函数:

  具体代码下如:


#include <rthw.h>
#include <rtconfig.h>
#include "gd32f3x0.h"
#ifndef RT_USING_FINSH
#error Please uncomment the line <#include "finsh_config.h"> in the rtconfig.h 
#endif

#ifdef RT_USING_FINSH

RT_WEAK char rt_hw_console_getchar(void)
{
    /* Note: the initial value of ch must < 0 */
    int ch = -1;

    if(RESET != usart_flag_get(USART0, USART_FLAG_TC)  && RESET != usart_flag_get(USART0, USART_FLAG_RBNE))
        ch = usart_data_receive(USART0);  

    return ch;
}

#endif /* RT_USING_FINSH */

12、在rtconfig.h中打开RT串口打印

13、修改 board.c,新增 UART0的初始、发送函数、以及prinf的函数重定向:增加gd32f3x0.h以及stdio.h的头文件引用:

 修改后代board.c代码如下:

/*
 * Copyright (c) 2006-2019, RT-Thread Development Team
 *
 * SPDX-License-Identifier: Apache-2.0
 *
 * Change Logs:
 * Date           Author       Notes
 * 2021-05-24                  the first version
 */

#include <rthw.h>
#include <rtthread.h>
#include "gd32f3x0.h"
#include <stdio.h>

#if defined(RT_USING_USER_MAIN) && defined(RT_USING_HEAP)
/*
 * Please modify RT_HEAP_SIZE if you enable RT_USING_HEAP
 * the RT_HEAP_SIZE max value = (sram size - ZI size), 1024 means 1024 bytes
 */
#define RT_HEAP_SIZE (4*1024)
static rt_uint8_t rt_heap[RT_HEAP_SIZE];

RT_WEAK void *rt_heap_begin_get(void)
{
    return rt_heap;
}

RT_WEAK void *rt_heap_end_get(void)
{
    return rt_heap + RT_HEAP_SIZE;
}
#endif

void rt_os_tick_callback(void)
{
    rt_interrupt_enter();
    
    rt_tick_increase();

    rt_interrupt_leave();
}

void SysTick_Handler()
{
    rt_os_tick_callback();
}
/**
 * This function will initial your board.
 */
void rt_hw_board_init(void)
{
 #include "systick.h"
  systick_config();
#ifdef RT_USING_COMPONENTS_INIT
    rt_components_board_init();
#endif

#if defined(RT_USING_USER_MAIN) && defined(RT_USING_HEAP)
    rt_system_heap_init(rt_heap_begin_get(), rt_heap_end_get());
#endif
}

#ifdef RT_USING_CONSOLE

void usart0_gpio_config(void)
{
    /* enable COM GPIO clock */
    rcu_periph_clock_enable(RCU_GPIOA);

    /* connect port to USARTx_Tx */
    gpio_af_set(GPIOA, GPIO_AF_1, GPIO_PIN_9);

    /* connect port to USARTx_Rx */
    gpio_af_set(GPIOA, GPIO_AF_1, GPIO_PIN_10);

    /* configure USART Tx as alternate function push-pull */
    gpio_mode_set(GPIOA, GPIO_MODE_AF, GPIO_PUPD_PULLUP, GPIO_PIN_9);
    gpio_output_options_set(GPIOA, GPIO_OTYPE_PP, GPIO_OSPEED_10MHZ, GPIO_PIN_9);

    /* configure USART Rx as alternate function push-pull */
    gpio_mode_set(GPIOA, GPIO_MODE_AF, GPIO_PUPD_PULLUP, GPIO_PIN_10);
    gpio_output_options_set(GPIOA, GPIO_OTYPE_PP, GPIO_OSPEED_10MHZ, GPIO_PIN_10);
}

/*!
    \brief      configure the USART0
    \param[in]  none
    \param[out] none
    \retval     none
*/
void usart0_config(void)
{
    /* enable USART clock */
    rcu_periph_clock_enable(RCU_USART0);

    /* USART configure */
    usart_deinit(USART0);
    usart_word_length_set(USART0, USART_WL_8BIT);
    usart_stop_bit_set(USART0, USART_STB_1BIT);
    usart_parity_config(USART0, USART_PM_NONE);
    usart_baudrate_set(USART0, 115200U);
    usart_receive_config(USART0, USART_RECEIVE_ENABLE);
    usart_transmit_config(USART0, USART_TRANSMIT_ENABLE);

    usart_enable(USART0);
}

/* retarget the C library printf function to the USART */
int fputc(int ch, FILE *f)
{
    usart_data_transmit(USART0, (uint8_t) ch);
    while(RESET == usart_flag_get(USART0, USART_FLAG_TBE));
    return ch;
}

static int uart_init(void)
{
    usart0_gpio_config();
    usart0_config();
    return 0;
}
INIT_BOARD_EXPORT(uart_init);

void rt_hw_console_output(const char *str)
{
    printf("%s",str);
}

#endif

14、到这里基本代码修改完毕,编译通过:

  15、在main函数引用“rtthread.h"

将delay_1ms替换成rt_thread_mdelay:

 

  16、编译后下载,led闪烁,串口打印如下:

 输入free:

  到此,RT_Treade移植成功。

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