使用外部中断释放信号量，在线程里接收数据，一次成功一次失败，这个代码有问题吗？

发布于 2021-04-21 10:10:47 浏览：1212 订阅该版

中断回调函数释放信号量
void ReceiveData(void *args)
{
   rt_sem_release(&idcard_lock);   
}

线程接收数据
static void idcardthd_entry(void* parameter)
{		
    int32_t ret = RET_WS_WORK;
    rt_sem_init(&idcard_lock, "idcard_lock", 0, RT_IPC_FLAG_FIFO);
    
	RTAPP_Debug("idcardthd_entry!\n");	
    
    /*进行二代证波特率匹配*/
    while(1)
    {
        if((CONF_GetUsbCommFunc()&CONF_USBFUNC_SDT) != 0)
        {
            ret =RET_WS_OK;
            break;
        }
        else
        {
            ret = IDCard_AutoBaudProc();
            if(ret == RET_WS_WORK)
            {
                rt_thread_delay(RT_THREAD_DELAY_TIME);
            }
            if(ret == RET_WS_OK)                    /*波特率匹配成功*/
            {
                break;
            }
            else if(ret == MATCHING_FAILURE)        /*波特率匹配不成功结束线程*/
            {
                break;
            }
        }
    }
    
    /*二代证波特率匹配成功进入二代证数据接收发送处理线程*/
    if(ret == RET_WS_OK)
    {      
        while(1)
        {
            if(RT_EOK == rt_sem_take(&idcard_lock, RT_WAITING_FOREVER))
            {
                rt_base_t level;
                level = rt_hw_interrupt_disable();
                wSendBufLen = IDBox_ReceiveData(ucSendBuf,sizeof(ucSendBuf));
                rt_hw_interrupt_enable(level);
                                  
                IDCard_Proc(NULL);
               
            }

}
    }
    RTAPP_Debug("idcardthd_entry end\n");

}
 数据接收
  uint16_t IDBox_ReceiveData(uint8_t * buffer, uint16_t buflen)
{
	uint8_t temp = 0;
	uint16_t len = 0;
    uint8_t *data = buffer;
    uint8_t i = 0;
   
    if(IDBox_CheckSendDataLock())
    {
        return 0;
    }

IDBOX_S_SDATA_Q_CFG_INPUT();
	IDBOX_S_SCLK_Q_CFG_INPUT();
	
	while (IDBOX_S_SCLK_GET_STATUS() != 0)
    {
        if (IDBOX_S_TX_FRAME_GET_STATUS() == 0) goto retn;
    }

while (IDBOX_S_TX_FRAME_GET_STATUS() != 0)
    {
	   	temp =0x80;	
        *data = 0x00;
       
		for (i=0;i<8;i++)
		{    			
			while(IDBOX_S_SCLK_GET_STATUS() == 0);		
            
			if ( IDBOX_S_SDATA_GET_STATUS() != 0)
				(*data)|= temp;
	
  			temp >>= 1;
			
			while(IDBOX_S_SCLK_GET_STATUS() != 0)
			{
				if (IDBOX_S_TX_FRAME_GET_STATUS() == 0) goto retn;
			}			
		}

IDBOX_S_SDATA_Q_CFG_OUTPUT();
        IDBOX_S_SDATA_SET_LOW();

while(IDBOX_S_SCLK_GET_STATUS() == 0);         
        while(IDBOX_S_SCLK_GET_STATUS() != 0)
        {
            if (IDBOX_S_TX_FRAME_GET_STATUS() == 0) goto retn;
        }
        
        IDBOX_S_SDATA_Q_CFG_INPUT();
        
		if(len >= buflen)
		{
			goto retn;
		}
		data++;
		len++;
    }
   
retn:

IDBOX_S_SDATA_Q_CFG_OUTPUT();
    IDBOX_S_SDATA_SET_HIGH();
    IDBOX_S_SCLK_Q_CFG_OUTPUT();
    IDBOX_S_SCLK_SET_HIGH();
	
	//rt_sem_release(&idcard_lock);

return len;
}