智能卡（CPU卡）接受不到过程字节。

只看该作者 · 2018-1-9 15:23

本帖最后由 qq5782098 于 2018-1-15 15:47 编辑

智能卡（CPU卡）接受不到过程字节。

有一张CPU卡发送选择文件命令  00  A4  00  00  02  3F  00接到不到过程字节和任何数据

但是发送随机数命令  00  84  00  00  02可以正常获取并得到随机数。

代码
unsigned int ICC_IsoCommand(int p_iInLength, unsigned char *p_abSentData, unsigned char *p_iOutLen, unsigned char *p_abResponse)
{
      // Local variable declaration
      unsigned char ACK = 0;
      unsigned int l_wStatus = 0;
      int i; //for counter
unsigned char p_bIsoType = 0;
unsigned char Status = 0; //调试完去掉

//ICC_ChangeSlot(Slot);

//USART_DMACmd(SC_USART, USART_DMAReq_Rx, ENABLE);
      // Send command

if(USART_GetFlagStatus(CPU_USARTx, USART_FLAG_RXNE) == SET)    //经调试需要在此家一个  读操作来过滤上电的一个字节  复位同理
{
      USART_ReceiveData(CPU_USARTx);
}
      WritesamData(&p_abSentData[CMD_CLA]);
      WritesamData(&p_abSentData[CMD_INS]);
      WritesamData(&p_abSentData[CMD_P1]);
      WritesamData(&p_abSentData[CMD_P2]);
      WritesamData(&p_abSentData[CMD_P3]);

      Status = USART_ReceiveData(CPU_USARTx);

if(p_iInLength==0x05)
{

         p_bIsoType=ISO_OUT;       //case 2
         p_iOutLen[0]=p_abSentData[CMD_P3];

}
else
{
         p_bIsoType=ISO_IN;             //case 3
         p_iOutLen[0]=0x00;
}

ReceiveGoOn:

      if(ReadPsamData(&ACK, SC_Receive_Timeout)==0)
      {
            return 0x6fff;
      }
      if (ACK == 0x60)
      {
            goto ReceiveGoOn;
      }
      if (ACK != p_abSentData[CMD_INS])
      {
            l_wStatus = (ACK<<8);
                     if(ReadPsamData(&ACK, SC_Receive_Timeout)==0)
                     {
            //p_iOutLen[0]=0x00;
                        return 0x6fff;

                     }
            l_wStatus = l_wStatus | ACK;
            return l_wStatus;
      }

      switch (p_bIsoType)
      {

            case ISO_IN :    //case 3

                     CardDelay_ms(1);

                     // Send buffer data
                     for (i = 0; i < (p_iInLength-5) ; i++)
                     {
                              WritesamData(&p_abSentData[i+5]);
                     }

                     (void)USART_ReceiveData(CPU_USARTx);

                     l_wStatus = GetStatus();

                     return l_wStatus;

            case ISO_OUT :       //case 2

                     for (i = 0; i < p_iOutLen[0]; i++)
                     {
                                    if(ReadPsamData(&ACK,SC_Receive_Timeout)==0)
                                    {

                     //p_iOutLen[0]=0x00;
                                       return 0x6fff;

                                    }
                              p_abResponse = ACK;
                     }

                     l_wStatus = GetStatus();

                     return l_wStatus;

            default : //p_iOutLen[0]=0x00;
                  return(0x6fff);


      }
}