RC531 或者是FM1722读CPU时，返回数据溢出的问题

只看该作者 · 2017-5-3 11:47

RC531 或者是FM1722读CPU时，返回的字节数据大于64 位，在不使用外部中断的方式下，用查询的方式接收大于64字节以上的数据，这个命令传送函数该怎么写？请指教，该函数的功能与下面的额类似，但是下面的函数无法处理返回64字节以上的数据。请帮忙，谢谢了

只看该作者 · 2017-5-3 11:51

/***************************************************************************
º¯ÊýÃû³Æ£ºSendCMD
º¯Êý¹¦ÄÜ£ºÐ´PCDÃüÁî·¢ËÍ¿¨Æ¬²Ù×÷ÃüÁî²¢½ÓÊÕÊý¾Ý
ÊäÈë²ÎÊý£º
set:structÀàÐÍ£¬°üº¬ÁËPCDÃüÁî£¬
¿¨Æ¬²Ù×÷ÃüÁî£¬¿¨Æ¬²Ù×÷ÃüÁî²ÎÊý³¤¶È£¨º¬ÃüÁî£©ÒÔ¼°½ÓÊÕÊý¾ÝÓ¦ÓÐ³¤¶È
Êä³ö²ÎÊý£º
error_flag:´íÎó±êÊ¶£¬±êÊ¶µÄºê¶¨ÒåÔÚFM1722.hÖÐ
set:º¬½ÓÊÕÊý¾Ý
/******************************************************
*·¢ËÍÖ¸Áî
***************************************************/
unsigned char SendCMD2(Transceive *set)
{
unsigned char  recebyte = 0;
char err_flag,sta;
unsigned char irqEn = 0x00;
unsigned char waitFor = 0x00;
unsigned char lastBits;

unsigned int i;
switch (set->command)
{
   case PCD_IDLE:
      irqEn = 0x00;
      waitFor = 0x00;
      break;
   case PCD_WRITEE2:
      irqEn = 0x11;
      waitFor = 0x10;
      break;
   case PCD_READE2:
      irqEn = 0x07;
      waitFor = 0x04;
      recebyte=1;
      break;
   case PCD_LOADCONFIG:
   case PCD_LOADKEYE2:
   case PCD_AUTHENT1:
      irqEn = 0x05;
      waitFor = 0x04;
      break;
   case PCD_CALCCRC:
      irqEn = 0x11;
      waitFor = 0x10;
      break;
   case PCD_AUTHENT2:
      irqEn = 0x04;
      waitFor = 0x04;
      break;
   case PCD_RECEIVE:
      irqEn = 0x06;
      waitFor = 0x08;
      recebyte=1;
      break;
   case PCD_LOADKEY:
      irqEn = 0x05;
      waitFor = 0x04;
      break;
   case PCD_TRANSMIT:
      irqEn = 0x05;
      waitFor = 0x04;
      break;
   case PCD_TRANSCEIVE:  //ÃüÁî·¢ËÍ½ÓÊÕ
      irqEn = 0x3D;
      waitFor = 0x04;
      recebyte=1;
      break;
   default:
      set->command = MI_UNKNOWN_COMMAND;
      break;
}
if (set->command != MI_UNKNOWN_COMMAND)
{
   WriteIO(RegPage,0x00);  //ÇÐ»»ÏßÐÔÑ°Ö·
   WriteIO(RegInterruptEn,0x7F);
   WriteIO(RegInterruptRq,0x7F);
   WriteIO(RegCommand,PCD_IDLE);
   SetBitMask(RegControl,0x01);
   WriteIO(RegInterruptEn,irqEn|0x80);//ÔÊÐí¶ÔÓ¦µÄÖÐ¶Ï
     ClearFIFO();    //Çå¿ÕFIFO

   for (i=0; i<set->length; i++)
   {
      WriteIO(RegFIFOData, set->sr_data[i]); //Ð´Êý¾Ý
   }
   WriteIO(RegCommand, set->command); //Ð´ÃüÁî

   i = 0x2000;
   do
   {
      n = ReadIO(RegInterruptRq); // ¶ÁÕâ¸öÖÐ¶Ï0
      i--;
   }while ((i!=0) && !(n&irqEn&0x20) && !(n&waitFor));
{
sta=ReadIO(RegPrimaryStatus); //¶Á¸÷ÖÖ×´Ì¬¼Ä´æÆ÷
err_flag = 101;    //Êý¾Ý´ÓÕâÀïÌø³öÊ±·µ»ØµÄ´íÎóÊÇFIFO ½ÓÊÕµÄÊý¾Ý³¬¹ý
}
if ((i!=0) && !(n&irqEn&0x20))  // Èç¹ûÕýÈ·µÄ»°£¬¶Á³öµÄÖÐ¶Ï±êÊ¶Îª1
   {
      if (!(ReadIO(RegErrorFlag)&0x17))
      {
            err_flag = MI_OK;
         if (recebyte)
         {
              n = ReadIO(RegFIFOLength);
            for (i=0; i<n; i++)
            {
                  set->sr_data[i] = ReadIO(RegFIFOData);
            }
         }
      }
   else if (ReadIO(RegErrorFlag)&0x01)
      {
         err_flag = MI_COLLERR; //³åÍ»Î»
         if (recebyte)
         {
              n = ReadIO(RegFIFOLength);
              lastBits = ReadIO(RegSecondaryStatus) & 0x07;
            if (lastBits)
            {
               set->length = (n-1)*8 + lastBits;
            }
            else
            {
               set->length = n*8;
            }
            if (n == 0)
            {
               n = 1;
            }
            for (i=0; i<n; i++)
            {
                  set->sr_data[i+1] = ReadIO(RegFIFOData);
            }
         }
      set->sr_data[0]=ReadIO(RegCollpos );
      }

   }
   else if (n & irqEn & 0x20)  //  ÎªÕæ £¬irqen Ó²¼þÎ´×Ô¶¯ÖÃ0
   {
   printf(" irqen=%.2X",irqEn);
   printf(" n=%.2X",n);
err_flag = MI_NOTAGERR;    //FIFOÊý¾Ý³¬ÏÞ
}

   else if (!(ReadIO(RegErrorFlag)&0x17))
   {
err_flag = MI_ACCESSTIMEOUT;    //³¬Ê±ÍË³ö 27
}

   else
   { err_flag = 102; } //ÆäËûÇé¿ö

   WriteIO(RegInterruptEn,0x7F);
   WriteIO(RegInterruptRq,0x7F);
   SetBitMask(RegControl,0x04);          // stop timer now
   WriteIO(RegCommand,PCD_IDLE);
}
return err_flag;
}

只看该作者 · 2017-5-3 11:53

求帮忙，哪位大神帮帮忙，可以把功能类似的源码函数发给我邮箱1403652139@qq.com

RC531 或者是FM1722读CPU时 ，返回数据溢出的问题

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RC531 或者是FM1722读CPU时，返回数据溢出的问题