CH579M移植RT-THREAD实战笔记（KEIL5环境）

Posted 2022-11-25 海里的鱼2022

确保能用的移植后的blink例子代码包见下载链接： 

1. 下载添加RT-THREAD支持包

 2. 在官方GPIO例程基础导入RT-THREAD

 

 3. 配置rtconfig.h文件

 

 

 4. 修改board.c文件

配置存储空间

---

#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 1024

// ADDED 
#define CH579M_SRAM1_START              (0x20000000)      
#define CH579M_SRAM1_END                (CH579M_SRAM1_START + 32 * 1024)   // ???? = 0x20000000(??) + 32K(RAM??)

#if defined(__CC_ARM) || defined(__CLANG_ARM)
extern int Image$$RW_IRAM1$$ZI$$Limit;                   // RW_IRAM1,???????????????
#define HEAP_BEGIN      ((void *)&Image$$RW_IRAM1$$ZI$$Limit)
#endif

#define HEAP_END                       CH579M_SRAM1_END



RT_WEAK void *rt_heap_begin_get(void)

    return HEAP_BEGIN;


RT_WEAK void *rt_heap_end_get(void)

    return (rt_uint32_t*)HEAP_END;

#endif

配置硬件驱动

void rt_hw_board_init()

	
    /* ³õʼ»¯SysTick */
    SysTick_Config( FREQ_SYS / RT_TICK_PER_SECOND );	
    
	
/* µ÷ÓÃ×é¼þ³õʼ»¯º¯Êý (use INIT_BOARD_EXPORT()) */
#ifdef RT_USING_COMPONENTS_INIT
    rt_components_board_init();
#endif
    
#if defined(RT_USING_CONSOLE) && defined(RT_USING_DEVICE)
	rt_console_set_device(RT_CONSOLE_DEVICE_NAME);
#endif
    
#if defined(RT_USING_USER_MAIN) && defined(RT_USING_HEAP)
    rt_system_heap_init(rt_heap_begin_get(), rt_heap_end_get());
#endif


    GPIOA_SetBits(GPIO_Pin_9);
    GPIOA_ModeCfg(GPIO_Pin_8, GPIO_ModeIN_PU);			// RXD-ÅäÖÃÉÏÀ­ÊäÈë
    GPIOA_ModeCfg(GPIO_Pin_9, GPIO_ModeOut_PP_5mA);		// TXD-ÅäÖÃÍÆÍìÊä³ö£¬×¢ÒâÏÈÈÃIO¿ÚÊä³ö¸ßµçƽ
    
	UART1_DefInit();

rtconfig.h文件里定义重映射端口号

#define RT_CONSOLE_DEVICE_NAME      "uart1" 

5. 改main.c

主循环

int main()

	
   rt_err_t result;

  

GPIOB_ModeCfg( GPIO_Pin_0, GPIO_ModeOut_PP_20mA );//PB0ÍÆÍìÊä³ö
		
rt_kprintf("RT thread sample.\\n");

    led1_thread =                          /* Ï߳̿ØÖÆ¿éÖ¸Õë */
        rt_thread_create( "led1",              /* Ïß³ÌÃû×Ö */
                          led1_thread_entry,   /* Ïß³ÌÈë¿Úº¯Êý */
                          RT_NULL,             /* Ïß³ÌÈë¿Úº¯Êý²ÎÊý */
                          512,                 /* Ïß³ÌÕ»´óС */
                          21,                   /* Ï̵߳ÄÓÅÏȼ¶ */
                          10);                 /* Ïß³Ìʱ¼äƬ */

    /* Æô¶¯Ị̈߳¬¿ªÆôµ÷¶È */
    if (led1_thread != RT_NULL)
		
        rt_thread_startup(led1_thread);
		rt_kprintf("led thread start.\\n");
    else
        return -1;
	

 定义blink任务

static void led1_thread_entry(void* parameter)

    //char *str;
    rt_uint32_t len ;

    	rt_kprintf("led thread init.\\n");
    while (TRUE)
    
       

						rt_kprintf("led thread running.\\n");
			 GPIOB_InverseBits(GPIO_Pin_0);			
			rt_thread_mdelay(500);