persimon m3 sdk 线程启动问题

发布于 2021-05-18 11:30:31 浏览：662 订阅该版

我使用persimon sdk 编写了如下线程 ：
```c
#include <rtthread.h>
#include <rtdevice.h>
#include <board.h>
#include <ff.h>
#include  "FileItemComusition_js.h"
#include "Kernel_object_pey.h"
#include <js_api.h> 
#define   FileInfoThread_PRIORITY    25
#define   FileInfoTimeSlicy         10
//ALIGN(RT_ALIGN_SIZE)
static char FileInfoThread_stack [1024*10];
static struct rt_thread  FileInfoThread_handle;

void  FileInfo_entry(void *param)
{
     int fd,size;
     js_char_t  buf[4096];
     struct Message_x   Message_data;
	  while(1)
	  {
        rt_sem_take(&Sem_waitReadFile,RT_WAITING_FOREVER);

fd=open("mnt/sd0/media/data/bus/1/1S.csv",O_RDONLY);
         if (fd>=0)
         {
         	size=read(fd,buf,sizeof(buf));
         	close(fd);
         	rt_kprintf("Read from File is Length:%d, is buf item is :%s\n",size,buf);
         
           
            Message_data.bufptr=buf;
          
            Message_data.Msg_Length=size;
          
            rt_mq_send(mq,(void*)&Message_data,sizeof (struct Message_x));

rt_thread_mdelay(100);
         }
	  }

}
void  FileInfoThread_sample(void)
{
	rt_err_t res;

rt_thread_init(&FileInfoThread_handle, "FileInfo",
                 FileInfo_entry,RT_NULL,
                 &FileInfoThread_stack[0],sizeof (FileInfoThread_stack),
                 FileInfoThread_PRIORITY,FileInfoTimeSlicy);

res=rt_thread_startup(&FileInfoThread_handle);
	if (res!=RT_EOK)
	{
		rt_kprintf("create the FileInfoThread fail \n");

}
	//return 0;

}

MSH_CMD_EXPORT (FileInfoThread_sample,FileInfoThread  sample);
```
main 函数如下：
```c
int main(int argc, char **argv)
{
    easyflash_init();
    player_system_init();
    Kernel_object_config();
  FileInfoThread_sample();
   FileItem_Comusition_js_Thread_handle_sample ();
     
    return 0;
}

int  Kernel_object_config(void)
{
	rt_err_t  res;
	 rt_sem_init(&Sem_waitReadFile,"SemReadFile",1,RT_IPC_FLAG_FIFO);

mq=rt_mq_create("mq",Msg_size,Max_msg,RT_IPC_FLAG_FIFO);
	 if (mq==RT_NULL)
	 {
	 	rt_kprintf("create the mq failed\n");
     	return -1;
	 }
	
	
}
```
当使用MSH 命令启动FileInfoThread_sample() 时可以正常运行，
当把`FileInfoThread_sample()`; 函数放在main 函数中 
在串口终端使用ps 命令可以看到有此线程，
但是 entry 函数中的串口输出语句不能执行