创建线程提示SCB_CFSR_BFSR:0x04 IMPRECISERR 错误

发布于 2020-10-19 14:23:36 浏览：2980 订阅该版

1.系统版本： RTThread Nano 3.1.3 build Oct 19 2020

2.硬件版本：STM32F107RC

创建线程代码：

```c
#define THREAD_PRIORITY         25
#define THREAD_STACK_SIZE       512
#define THREAD_TIMESLICE        5

ALIGN(RT_ALIGN_SIZE)
static char thread2_stack[256];
static struct rt_thread thread2;
static rt_thread_t tid1 = RT_NULL;
/* 线程 2 入口 */
static void thread2_entry(void *param)
{
    rt_uint32_t count = 0;

/* 线程 2 拥有较高的优先级，以抢占线程 1 而获得执行 */
    for (count = 0; count < 10 ; count++)
    {
        /* 线程 2 打印计数值 */
      //  rt_kprintf("thread2 count: %d\n", count);
		
    }
   // rt_kprintf("thread2 exit\n");
    /* 线程 2 运行结束后也将自动被系统脱离 */
}

int main(void)
{
    MX_GPIO_Init();
	
	rt_thread_t tid;

#ifdef RT_USING_HEAP
    tid = rt_thread_create("thread", thread2_entry, RT_NULL,
                           128, THREAD_PRIORITY, 20);
    RT_ASSERT(tid != RT_NULL);
#endif
	rt_thread_startup(tid);
	}
```

内存初始化代码：
```c
#define STM32_FLASH_START_ADRESS     ((uint32_t)0x08000000)
#define STM32_FLASH_SIZE             (256 * 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

#define HEAP_END        STM32_SRAM_END

#if defined(RT_USING_USER_MAIN) && defined(RT_USING_HEAP)
#define RT_HEAP_SIZE 10240
static uint32_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

#if defined(RT_USING_USER_MAIN) && defined(RT_USING_HEAP)
    rt_system_heap_init(rt_heap_begin_get(), rt_heap_end_get());
#endif
	
	    /* Heap initialization */
//#ifdef RT_USING_HEAP
//#if STM32_EXT_SRAM
//    rt_system_heap_init((void*)STM32_EXT_SRAM_BEGIN, (void*)STM32_EXT_SRAM_END);
//#else
//#if defined(__CC_ARM) || defined(__CLANG_ARM)
//    rt_system_heap_init((void*)&Image$$RW_IRAM1$$ZI$$Limit, (void*)STM32_SRAM_END);
//#elif __ICCARM__
//    rt_system_heap_init(__segment_end("HEAP"), (void*)STM32_SRAM_END);
//#else
//    /* init memory system */
//    rt_system_heap_init((void*)&__bss_end, (void*)STM32_SRAM_END);
//#endif
//#endif  /* STM32_EXT_SRAM */
//#endif /* RT_USING_HEAP */

/* Heap initialization */
#if defined(RT_USING_HEAP)
//    rt_system_heap_init((void *)HEAP_BEGIN, (void *)HEAP_END);
#endif
```

去除线程之后，正常。

错误信息
![image.png](/uploads/20201019/9bfeaec401c21c276b0503775c2c54a4.png)