用python发送APDU命令（RC522，RaspberryPi）

Question

我构建了一个带有树莓皮3和RC522的RFID阅读器，使用以下代码作为起点：https://github.com/mxgxw/MFRC522-python。 不幸的是，在发送了任何APDU命令之后，我无法从我的卡上获得APDU响应。在

我目前的工作流程大致是ISO 14443-4：

1. 搜索卡片
2. 接收ATQA
3. 防撞选卡
4. 确定卡是否支持ISO-14443-4协议
5. 发送老鼠和接收ATS
6. 执行PPS请求[直到这里一切正常，我得到回复。]

7. 发送APDU命令[顺便说一句，这个命令可以很好地与我的智能手机和应用程序配合使用]

   #Scan for cards    
   (status,TagType) = MIFAREReader.MFRC522_Request(MIFAREReader.PICC_REQIDL)
   
   #If a card is found
   if status == MIFAREReader.MI_OK:
   print "Card detected"
   TagType = (TagType >> 6) | 0 #(Länge der UID errechnen 
   print "Tagtype:  %s" % (TagType)
   
   # START  ANTI-COLLISION AS OF ISO 14443
   
   if TagType == 0:
       print "UID length is single -- starting ANTI-COLLISION CL1"
       (status,uid) = MIFAREReader.MFRC522_Anticoll()
   
       if status == MIFAREReader.MI_OK:
           print "Card read UID: %s,%s,%s,%s" % (uid[0], uid[1], uid[2], uid[3])
   
   elif TagType == 1: # Ignore this part as there is no functionality by now
       print "CARD IS NOT SUPPORTED YET"
       (status,uid) = MIFAREReader.MFRC522_Anticoll()
   
   elif TagType == 2:
       print "CARD IS NOT SUPPORTED YET"
       (status,uid) = MIFAREReader.MFRC522_Anticoll()
   
   elif TagType == 3:
       print "CARD IS NOT SUPPORTED YET"
       (status,uid) = MIFAREReader.MFRC522_Anticoll()
   
   
   else:
       print "An unexpected error occured: UID length is not covered by ISO-14443."
   
   (size, APDU) = MIFAREReader.MFRC522_SelectTag(uid)
   
   print "Card selected"
   print "ISO 14443-4 Compatibility: %s" % (APDU)
   
   if APDU == 1: # Card supports ISO 14443-4 protocol [Problem could be here]
   
       #SEND RATS
       print "Sening RATS"
       RATS_Sequenz = [0xE0, 0x50]
       CRC_RATS = []
       CRC_RATS = MIFAREReader.CalulateCRC(RATS_Sequenz)
       RATS_Sequenz.append(CRC_RATS[0])
       RATS_Sequenz.append(CRC_RATS[1])
       (stat, res, leng) = MIFAREReader.MFRC522_ToCard(MIFAREReader.PCD_TRANSCEIVE, RATS_Sequenz)
   
       # Muss: Auswertung des ATS
   
       # PPS
       print "Initialisiere PPS-Kommando"
       PPSS_Sequenz = [0xD0, 0x11, 0x00]
       CRC_PPSS = []
       CRC_PPSS = MIFAREReader.CalulateCRC(PPSS_Sequenz)
       PPSS_Sequenz.append(CRC_PPSS[0])
       PPSS_Sequenz.append(CRC_PPSS[1])
       (stat, res, leng) = MIFAREReader.MFRC522_ToCard(MIFAREReader.PCD_TRANSCEIVE, PPSS_Sequenz)
   
       #PCB = [0x02]
       #PCB.append(PCB[0])
       #PCB.append(PCB[1])
       #(stat, res, leng) = MIFAREReader.MFRC522_ToCard(MIFAREReader.PCD_TRANSCEIVE, PCB)
   
       command = [0xFF, 0x41, 0x00, 0x00, 0x00] # NOT THE COMMAND!
       Header = [0x00, 0x22, 0xC1, 0xA4, 0x12, 0x80, 0x0A, 0x04, 0x00, 0x7F, 0x00, 0x07, 0x02, 0x02, 0x04, 0x02, 0x02, 0x83, 0x01, 0x02, 0x84, 0x01, 0x0D] #Command to be sent
       pOut = MIFAREReader.CalulateCRC(Header)
       Header.append(pOut[0])
       Header.append(pOut[1])
   
       (stat, res, leng) = MIFAREReader.MFRC522_ToCard(MIFAREReader.PCD_TRANSCEIVE, (Header))
       time.sleep(1) # Leftover from here / another non working try
   
       Body = [0x80, 0x0A, 0x04, 0x00, 0x7F, 0x00, 0x07, 0x02, 0x02, 0x04, 0x02, 0x02, 0x83, 0x01, 0x02, 0x84, 0x01, 0x0D]
       #pOut = MIFAREReader.CalulateCRC(Body)
       #Body.append(pOut[0])
       #Body.append(pOut[1])
   
       #(stat, res, leng) = MIFAREReader.MFRC522_ToCard(MIFAREReader.PCD_TRANSCEIVE, Body)
   elif APDU == 0:
       #HALT
       command = [0x50]
       pOut = MIFAREReader.CalulateCRC(command)
       command.append(pOut[0])
       command.append(pOut[1])
       (stat, res, leng) = MIFAREReader.MFRC522_ToCard(MIFAREReader.PCD_TRANSCEIVE, command)
       #WOP
   

这是“库”中的send函数：

^{pr2}$

使用上述代码的“toCard”函数发送命令，其结构如下：

APDU命令+CRC字节。在

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例如0x00[CLA]、0x22[INS]、0xC1[P1]、0xA4[P2]、0x12[长度]、0x80[数据、0x0A、0x04、0x00、0x7F、0x00、0x07、0x02、0x02、0x04、0x02、0x02、0x83、0x01、0x02、0x84、0x01、0x0D、CRC1、CRC2

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我还尝试用一个额外的PCB或多个部分发送命令（例如，先发送头，然后发送主体）。 我不确定APDU命令的结构是，还是我忘记了iso14443中激活过程的某些部分。如果有人能帮我，我会很高兴的。在