rtthread_startup();函数启动到执行main函数时间过长

发布于 2024-03-15 15:33:43 浏览：448 订阅该版

自制了一个BSP发现BSP

启动过程中从`rtthread_startup()；`

执行到main函数大概用时5秒多一点。这个时间是不是过长？
调试发现 `rtthread_startup()；`执行时间也很短，不知道什么原因导致运行到main函数速度慢，线程只运行了三个，线程在上电后启动很快，程序使用Bootloader跳转到0x08020000启动

用的是Geehy APM32 E103芯片

```c
int rtthread_startup(void)
{
    rt_hw_interrupt_disable();

/* board level initialization
     * NOTE: please initialize heap inside board initialization.
     */
    rt_hw_board_init();

/* show RT-Thread version */
    rt_show_version();

/* timer system initialization */
    rt_system_timer_init();

/* scheduler system initialization */
    rt_system_scheduler_init();

#ifdef RT_USING_SIGNALS
    /* signal system initialization */
    rt_system_signal_init();
#endif

/* create init_thread */
    rt_application_init();

/* timer thread initialization */
    rt_system_timer_thread_init();

/* idle thread initialization */
    rt_thread_idle_init();

#ifdef RT_USING_SMP
    rt_hw_spin_lock(&_cpus_lock);
#endif /*RT_USING_SMP*/

/* start scheduler */
    rt_system_scheduler_start();

/* never reach here */
    return 0;
}
```

board.h配置如下
```c
#ifdef __cplusplus
extern "C" {
#endif

#define STM32_FLASH_START_ADRESS     ((uint32_t)0x08000000)
#define STM32_FLASH_SIZE             (512 * 1024)
#define STM32_FLASH_END_ADDRESS      ((uint32_t)(STM32_FLASH_START_ADRESS + STM32_FLASH_SIZE))

/* Internal SRAM memory size[Kbytes] <8-64>, Default: 64*/
#define STM32_SRAM_SIZE      64
#define STM32_SRAM_END       (0x20000000 + STM32_SRAM_SIZE * 1024)

#if defined(__CC_ARM) || defined(__CLANG_ARM)
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
```