#define Length_Data 5
typedef struct
{
  uint8_t Head;
  uint8_t Tail;
  uint8_t Length;
  uint8_t Tab[Length_Data];
  uint8_t Primary_Data[Length_Data];
}packet;
packet  an_packet_t;


void  main(void)
{
    packet  point;
    while (1)
    {
      Data_analysis(&point);   
    }
}

void Data_analysis(packet* point)
{
  if(point->Head == 0xaa && point->Length == 5 && point->Tail == 0x78)
  {
    memcpy(an_packet_t.Primary_Data,an_packet_t.Tab,Length_Data);
    memset(an_packet_t.Tab,0,Length_Data);
    HAL_GPIO_TogglePin(GPIOD,GPIO_PIN_1);
    HAL_Delay(500);
  }
}


这样的写法好像不对。错在哪里。有谁知道不？