GPS引起的错误

发布于 2020-06-05 21:44:27 浏览：998 订阅该版

原来项目使用sim800c模块，使用AT直接控制进行数据传输，最近项目增量了GPS功能，运行一会就提升这个错误：

(rt_object_get_type(&dev->parent) == RT_Object_Class_Device) assertion failed at function:rt_device_read, line number:366

主进程直接就死掉了，其他线程还正常。

这个时什么原因？？

下面时GPS的主要代码：

//回调函数
rt_err_t gps_input(rt_device_t dev, rt_size_t size)
{
 struct gps_rx_msg msg;
 msg.dev = dev;
 msg.size = size;
 //发送消息队列
 rt_mq_send(&gps_rx_mq, &msg, sizeof(struct gps_rx_msg));
 return RT_EOK;
}
void gps_thread_entry(void* parameter)
{
 struct gps_rx_msg msg;
 rt_device_t device;
 rt_err_t result = RT_EOK;
 uint8_t   gpspow_openstate=0;
 uint16_t   length=0;
 uint16_t   rx_length=0; 
 
 //查找设备
 device = rt_device_find(GPS_USE_UART);
 if (device!= RT_NULL)
 {  
  //指定回调
  rt_device_set_rx_indicate(device, gps_input);
  //打开设备
  if(rt_device_open(device, RT_DEVICE_OFLAG_RDWR|RT_DEVICE_FLAG_INT_RX)== RT_EOK)
   ;
  else
   rt_kprintf("Open GPS %s false! <br>",GPS_USE_UART);
 }
 else
  rt_kprintf("Find GPS %s false! <br>",GPS_USE_UART);

while(1)
 {

result = rt_mq_recv(&gps_rx_mq, &msg, sizeof(struct gps_rx_msg), 10);   
  if (result == -RT_ETIMEOUT)
  {
  }
  if (result == RT_EOK)
  {
   rx_length = (sizeof(gps_rx_buffer) - 1) > msg.size ? msg.size : sizeof(gps_rx_buffer) - 1;
   
   rx_length = rt_device_read(msg.dev, 0, &gps_rx_buffer[0],rx_length);

if((length+rx_length) > sizeof(gps_buffer))
   {
    length=0;
    rx_length=0;
   }
   else
   {
    strncat(gps_buffer,gps_rx_buffer,rx_length);      
    memset(gps_rx_buffer, 0, sizeof(gps_rx_buffer) ); 
    length += rx_length;
    if(gps_buffer[0]!='$')
    {
     length=0;
     rx_length=0;
    }
    
    if(gps_buffer[length-2]==' '&&gps_buffer[length-1]=='<br>')
    {
     .............
    }
   }
  }  
 } 
}