Question

我用Raspberry Pi 3和RC522构建了某种RFID-Reader，使用此代码作为开头：https://github.com/mxgxw/MFRC522-python。不幸的是，我发送任何APDU-Command后无法从我的卡上获得APDU响应。

我目前的工作流程或多或少是ISO 14443-4：

搜寻卡片
收到ATQA
执行防撞并选择卡
确定卡是否支持ISO-14443-4协议
发送RATS并接收ATS
执行PPS请求[直到这里一切正常，我得到回复。]

发送APDU命令[btw。命令适用于我的智能手机和APP]

#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＆＃39;库中的发送功能：

def MFRC522_ToCard(self,command,sendData):
backData = []
backLen = 0
status = self.MI_ERR
irqEn = 0x00
waitIRq = 0x00
lastBits = None
n = 0
i = 0

if command == self.PCD_AUTHENT:
  irqEn = 0x12
  waitIRq = 0x10
if command == self.PCD_TRANSCEIVE:
  irqEn = 0x77
  waitIRq = 0x30

self.Write_MFRC522(self.CommIEnReg, irqEn|0x80)
self.ClearBitMask(self.CommIrqReg, 0x80)
self.SetBitMask(self.FIFOLevelReg, 0x80)

self.Write_MFRC522(self.CommandReg, self.PCD_IDLE);  

while(i<len(sendData)):
  self.Write_MFRC522(self.FIFODataReg, sendData[i])
  i = i+1

self.Write_MFRC522(self.CommandReg, command)

if command == self.PCD_TRANSCEIVE:
  self.SetBitMask(self.BitFramingReg, 0x80)

i = 2000
while True:
  n = self.Read_MFRC522(self.CommIrqReg)
  i = i - 1
  if ~((i!=0) and ~(n&0x01) and ~(n&waitIRq)):
    break

self.ClearBitMask(self.BitFramingReg, 0x80)

if i != 0:
  if (self.Read_MFRC522(self.ErrorReg) & 0x1B)==0x00:
    status = self.MI_OK

    if n & irqEn & 0x01:
      status = self.MI_NOTAGERR

    if command == self.PCD_TRANSCEIVE:
      n = self.Read_MFRC522(self.FIFOLevelReg)
      lastBits = self.Read_MFRC522(self.ControlReg) & 0x07
      if lastBits != 0:
        backLen = (n-1)*8 + lastBits
      else:
        backLen = n*8

      if n == 0:
        n = 1
      if n > self.MAX_LEN:
        n = self.MAX_LEN

      i = 0
      while i<n:
        backData.append(self.Read_MFRC522(self.FIFODataReg))
        i = i + 1;
  else:
    status = self.MI_ERR

print"Status: %s, Data: %s, Length: %s" % (status, backData, backLen)

return (status,backData,backLen)

使用＆＃39; toCard＆＃39;发送命令。上述代码的功能具有以下结构：

APDU-Command + CRC-Bytes。

e.g。 0x00 [CLA]，0x22 [INS]，0xC1 [P1]，0xA4 [P2]，0x12 [长度]，0x80 [DATA，0x0A，0x04,0x00,0x7F，0x00,0x07,0x02,0x02,0x04,0x02,0x02 ，0x83,0x01,0x02,0x84,0x01,0x0D，CRC1，CRC2

我还尝试使用额外的PCB或多个部分发送命令（例如，首先是标题然后是标题）。我不确定APDU-Command的结构是否是，或者我是否忘记了ISO 14443中激活过程的某些部分。如果有人可以帮助我，我很高兴。

在python中发送APDU命令（RC522，RaspberryPi）

0 个答案: