From 42d9277062dd8dc3f51834798066e3beec7e6e3f Mon Sep 17 00:00:00 2001
From: Mario Gomez <mario.gomez@teubi.co>
Date: Sun, 10 Nov 2013 23:11:20 -0600
Subject: [PATCH] Fixed indentation

---
 MFRC522.py | 784 ++++++++++++++++++++++++++---------------------------
 1 file changed, 391 insertions(+), 393 deletions(-)

diff --git a/MFRC522.py b/MFRC522.py
index f91f5bd..9c24d42 100644
--- a/MFRC522.py
+++ b/MFRC522.py
@@ -1,395 +1,393 @@
-	
-
-    import RPi.GPIO as GPIO
-    import spi
-    import signal
-     
-    class MFRC522:
-      NRSTPD = 22
-     
-      MAX_LEN = 16
-     
-      PCD_IDLE       = 0x00
-      PCD_AUTHENT    = 0x0E
-      PCD_RECEIVE    = 0x08
-      PCD_TRANSMIT   = 0x04
-      PCD_TRANSCEIVE = 0x0C
-      PCD_RESETPHASE = 0x0F
-      PCD_CALCCRC    = 0x03
-     
-      PICC_REQIDL    = 0x26
-      PICC_REQALL    = 0x52
-      PICC_ANTICOLL  = 0x93
-      PICC_SElECTTAG = 0x93
-      PICC_AUTHENT1A = 0x60
-      PICC_AUTHENT1B = 0x61
-      PICC_READ      = 0x30
-      PICC_WRITE     = 0xA0
-      PICC_DECREMENT = 0xC0
-      PICC_INCREMENT = 0xC1
-      PICC_RESTORE   = 0xC2
-      PICC_TRANSFER  = 0xB0
-      PICC_HALT      = 0x50
-     
-      MI_OK       = 0
-      MI_NOTAGERR = 1
-      MI_ERR      = 2
-     
-      Reserved00     = 0x00
-      CommandReg     = 0x01
-      CommIEnReg     = 0x02
-      DivlEnReg      = 0x03
-      CommIrqReg     = 0x04
-      DivIrqReg      = 0x05
-      ErrorReg       = 0x06
-      Status1Reg     = 0x07
-      Status2Reg     = 0x08
-      FIFODataReg    = 0x09
-      FIFOLevelReg   = 0x0A
-      WaterLevelReg  = 0x0B
-      ControlReg     = 0x0C
-      BitFramingReg  = 0x0D
-      CollReg        = 0x0E
-      Reserved01     = 0x0F
-     
-      Reserved10     = 0x10
-      ModeReg        = 0x11
-      TxModeReg      = 0x12
-      RxModeReg      = 0x13
-      TxControlReg   = 0x14
-      TxAutoReg      = 0x15
-      TxSelReg       = 0x16
-      RxSelReg       = 0x17
-      RxThresholdReg = 0x18
-      DemodReg       = 0x19
-      Reserved11     = 0x1A
-      Reserved12     = 0x1B
-      MifareReg      = 0x1C
-      Reserved13     = 0x1D
-      Reserved14     = 0x1E
-      SerialSpeedReg = 0x1F
-     
-      Reserved20        = 0x20  
-      CRCResultRegM     = 0x21
-      CRCResultRegL     = 0x22
-      Reserved21        = 0x23
-      ModWidthReg       = 0x24
-      Reserved22        = 0x25
-      RFCfgReg          = 0x26
-      GsNReg            = 0x27
-      CWGsPReg          = 0x28
-      ModGsPReg         = 0x29
-      TModeReg          = 0x2A
-      TPrescalerReg     = 0x2B
-      TReloadRegH       = 0x2C
-      TReloadRegL       = 0x2D
-      TCounterValueRegH = 0x2E
-      TCounterValueRegL = 0x2F
-     
-      Reserved30      = 0x30
-      TestSel1Reg     = 0x31
-      TestSel2Reg     = 0x32
-      TestPinEnReg    = 0x33
-      TestPinValueReg = 0x34
-      TestBusReg      = 0x35
-      AutoTestReg     = 0x36
-      VersionReg      = 0x37
-      AnalogTestReg   = 0x38
-      TestDAC1Reg     = 0x39
-      TestDAC2Reg     = 0x3A
-      TestADCReg      = 0x3B
-      Reserved31      = 0x3C
-      Reserved32      = 0x3D
-      Reserved33      = 0x3E
-      Reserved34      = 0x3F
-       
-      serNum = []
-     
-     
-      def __init__(self,spd=1000000):
-        spi.openSPI(speed=spd)
-        GPIO.setmode(GPIO.BOARD)
-        GPIO.setup(22, GPIO.OUT)
-        GPIO.output(self.NRSTPD, 1)
-        self.MFRC522_Init()
-     
-      def MFRC522_Reset(self):
-        self.Write_MFRC522(self.CommandReg, self.PCD_RESETPHASE)
-     
-      def Write_MFRC522(self,addr,val):
-        spi.transfer(((addr<<1)&0x7E,val))
-     
-      def Read_MFRC522(self,addr):
-        val = spi.transfer((((addr<<1)&0x7E) | 0x80,0))
-        return val[1]
-     
-      def SetBitMask(self, reg, mask):
-        tmp = self.Read_MFRC522(reg)
-        self.Write_MFRC522(reg, tmp | mask)
-       
-      def ClearBitMask(self, reg, mask):
-        tmp = self.Read_MFRC522(reg);
-        self.Write_MFRC522(reg, tmp & (~mask))
-     
-      def AntennaOn(self):
-        temp = self.Read_MFRC522(self.TxControlReg)
-        if(~(temp & 0x03)):
-          self.SetBitMask(self.TxControlReg, 0x03)
-     
-      def AntennaOff(self):
-        self.ClearBitMask(self.TxControlReg, 0x03)
-     
-      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
-       
-        return (status,backData,backLen)
-     
-     
-      def MFRC522_Request(self, reqMode):
-        status = None
-        backBits = None
-        TagType = []
-       
-        self.Write_MFRC522(self.BitFramingReg, 0x07)
-       
-        TagType.append(reqMode);
-        (status,backData,backBits) = self.MFRC522_ToCard(self.PCD_TRANSCEIVE, TagType)
-     
-        if ((status != self.MI_OK) | (backBits != 0x10)):
-          status = self.MI_ERR
-         
-        return (status,backBits)
-     
-     
-      def MFRC522_Anticoll(self):
-        backData = []
-        serNumCheck = 0
-       
-        serNum = []
-     
-        self.Write_MFRC522(self.BitFramingReg, 0x00)
-       
-        serNum.append(self.PICC_ANTICOLL)
-        serNum.append(0x20)
-       
-        (status,backData,backBits) = self.MFRC522_ToCard(self.PCD_TRANSCEIVE,serNum)
-       
-        if(status == self.MI_OK):
-          i = 0
-          if len(backData)==5:
-            while i<4:
-              serNumCheck = serNumCheck ^ backData[i]
-              i = i + 1
-            if serNumCheck != backData[i]:
-              status = self.MI_ERR
-          else:
-            status = self.MI_ERR
-     
-        return (status,backData)
-     
-      def CalulateCRC(self, pIndata):
-        self.ClearBitMask(self.DivIrqReg, 0x04)
-        self.SetBitMask(self.FIFOLevelReg, 0x80);
-        i = 0
-        while i<len(pIndata):
-          self.Write_MFRC522(self.FIFODataReg, pIndata[i])
-          i = i + 1
-        self.Write_MFRC522(self.CommandReg, self.PCD_CALCCRC)
-        i = 0xFF
-        while True:
-          n = self.Read_MFRC522(self.DivIrqReg)
-          i = i - 1
-          if not ((i != 0) and not (n&0x04)):
-            break
-        pOutData = []
-        pOutData.append(self.Read_MFRC522(self.CRCResultRegL))
-        pOutData.append(self.Read_MFRC522(self.CRCResultRegM))
-        return pOutData
-     
-      def MFRC522_SelectTag(self, serNum):
-        backData = []
-        buf = []
-        buf.append(self.PICC_SElECTTAG)
-        buf.append(0x70)
-        i = 0
-        while i<5:
-          buf.append(serNum[i])
-          i = i + 1
-        pOut = self.CalulateCRC(buf)
-        buf.append(pOut[0])
-        buf.append(pOut[1])
-        (status, backData, backLen) = self.MFRC522_ToCard(self.PCD_TRANSCEIVE, buf)
-        if (status == self.MI_OK) and (backLen == 0x18):
-          size = backData[0]
-        else:
-          size = 0
-        return size
-     
-      def MFRC522_Auth(self, authMode, BlockAddr, Sectorkey, serNum):
-        buff = []
-        buff.append(authMode)
-        buff.append(BlockAddr)
-        i = 0
-        while(i < 6):
-          buff.append(Sectorkey[i])
-          i = i + 1
-        i = 0
-        while(i < 4):
-          buff.append(serNum[i])
-          i = i +1
-        (status, backData, backLen) = self.MFRC522_ToCard(self.PCD_AUTHENT,buff)
-        if not(status == self.MI_OK):
-          print "AUTH ERROR!!"
-        if not(self.Read_MFRC522(self.Status2Reg) & 0x08):
-          print "AUTH ERROR(status2reg & 0x08 != 0"
-     
-      def MFRC522_Read(self, blockAddr):
-        recvData = []
-        recvData.append(self.PICC_READ)
-        recvData.append(blockAddr)
-        pOut = self.CalulateCRC(recvData)
-        recvData.append(pOut[0])
-        recvData.append(pOut[1])
-        (status, backData, backLen) = self.MFRC522_ToCard(self.PCD_TRANSCEIVE, recvData)
-        if not(status == self.MI_OK):
-           print "Error while reading!"
-       
-        print "Got data size: "+str(backLen)
-        i = 0
-        if len(backData) == 16:
-           print "Sector "+str(blockAddr)+" "+str(backData)
-     
-      def MFRC522_Write(self, blockAddr, writeData):
-        buff = []
-        buff.append(self.PICC_WRITE)
-        buff.append(blockAddr)
-        crc = self.CalulateCRC(buff)
-        buff.append(crc[0])
-        buff.append(crc[1])
-        (status, backData, backLen) = self.MFRC522_ToCard(self.PCD_TRANSCEIVE, buff)
-        if not(status == self.MI_OK) or not(backLen == 4) or not((backData[0] & 0x0F) == 0x0A):
-           status = self.MI_ERR
-           print str(backLen)+" backdata &0x0F == 0x0A "+str(backData[0]&0x0F)
-        if status == self.MI_OK:
-           i = 0
-           buf = []
-           while i < 16:
-              buf.append(writeData[i])
-              i = i + 1
-           crc = self.CalulateCRC(buf)
-           buf.append(crc[0])
-           buf.append(crc[1])
-           (status, backData, backLen) = self.MFRC522_ToCard(self.PCD_TRANSCEIVE,buf)
-           if not(status == self.MI_OK) or not(backLen == 4) or not((backData[0] & 0x0F) == 0x0A):
-              print "Error while writing"
-           if status == self.MI_OK:
-              print "Data writen"
-     
-     
-      def MFRC522_Init(self):
-        GPIO.output(self.NRSTPD, 1)
-     
-        self.MFRC522_Reset();
-       
-       
-        self.Write_MFRC522(self.TModeReg, 0x8D)
-        self.Write_MFRC522(self.TPrescalerReg, 0x3E)
-        self.Write_MFRC522(self.TReloadRegL, 30)
-        self.Write_MFRC522(self.TReloadRegH, 0)
-       
-        self.Write_MFRC522(self.TxAutoReg, 0x40)
-        self.Write_MFRC522(self.ModeReg, 0x3D)
-        self.AntennaOn()
-     
-    continue_reading = True
-    # Capture SIGINT
-    def end_read(signal,frame):
-      global continue_reading
-      print "Ctrl+C captured, ending read."
-      continue_reading = False
-     
-    signal.signal(signal.SIGINT, end_read)
-     
-    MIFAREReader = MFRC522()
-     
-    while continue_reading:
-      (status,TagType) = MIFAREReader.MFRC522_Request(MIFAREReader.PICC_REQIDL)
-     
-      if status == MIFAREReader.MI_OK:
-        print "Card detected"
-     
-      (status,backData) = MIFAREReader.MFRC522_Anticoll()
-      if status == MIFAREReader.MI_OK:
-        print "Card read UID: "+str(backData[0])+","+str(backData[1])+","+str(backData[2])+","+str(backData[3])+","+str(backData[4])
-        MIFAREReader.MFRC522_SelectTag(backData)
-        key = [0xFF,0xFF,0xFF,0xFF,0xFF]
-     
-     
-        MIFAREReader.MFRC522_Auth(0x60,0,keyA,backData)
-        MIFAREReader.MFRC522_Read(0)
-        i = 1
-        while i < 64:
-           MIFAREReader.MFRC522_Auth(0x60,i,keyA,backData)
-           MIFAREReader.MFRC522_Read(i)
-           i = i + 1
+import RPi.GPIO as GPIO
+import spi
+import signal
+  
+class MFRC522:
+  NRSTPD = 22
+  
+  MAX_LEN = 16
+  
+  PCD_IDLE       = 0x00
+  PCD_AUTHENT    = 0x0E
+  PCD_RECEIVE    = 0x08
+  PCD_TRANSMIT   = 0x04
+  PCD_TRANSCEIVE = 0x0C
+  PCD_RESETPHASE = 0x0F
+  PCD_CALCCRC    = 0x03
+  
+  PICC_REQIDL    = 0x26
+  PICC_REQALL    = 0x52
+  PICC_ANTICOLL  = 0x93
+  PICC_SElECTTAG = 0x93
+  PICC_AUTHENT1A = 0x60
+  PICC_AUTHENT1B = 0x61
+  PICC_READ      = 0x30
+  PICC_WRITE     = 0xA0
+  PICC_DECREMENT = 0xC0
+  PICC_INCREMENT = 0xC1
+  PICC_RESTORE   = 0xC2
+  PICC_TRANSFER  = 0xB0
+  PICC_HALT      = 0x50
+  
+  MI_OK       = 0
+  MI_NOTAGERR = 1
+  MI_ERR      = 2
+  
+  Reserved00     = 0x00
+  CommandReg     = 0x01
+  CommIEnReg     = 0x02
+  DivlEnReg      = 0x03
+  CommIrqReg     = 0x04
+  DivIrqReg      = 0x05
+  ErrorReg       = 0x06
+  Status1Reg     = 0x07
+  Status2Reg     = 0x08
+  FIFODataReg    = 0x09
+  FIFOLevelReg   = 0x0A
+  WaterLevelReg  = 0x0B
+  ControlReg     = 0x0C
+  BitFramingReg  = 0x0D
+  CollReg        = 0x0E
+  Reserved01     = 0x0F
+  
+  Reserved10     = 0x10
+  ModeReg        = 0x11
+  TxModeReg      = 0x12
+  RxModeReg      = 0x13
+  TxControlReg   = 0x14
+  TxAutoReg      = 0x15
+  TxSelReg       = 0x16
+  RxSelReg       = 0x17
+  RxThresholdReg = 0x18
+  DemodReg       = 0x19
+  Reserved11     = 0x1A
+  Reserved12     = 0x1B
+  MifareReg      = 0x1C
+  Reserved13     = 0x1D
+  Reserved14     = 0x1E
+  SerialSpeedReg = 0x1F
+  
+  Reserved20        = 0x20  
+  CRCResultRegM     = 0x21
+  CRCResultRegL     = 0x22
+  Reserved21        = 0x23
+  ModWidthReg       = 0x24
+  Reserved22        = 0x25
+  RFCfgReg          = 0x26
+  GsNReg            = 0x27
+  CWGsPReg          = 0x28
+  ModGsPReg         = 0x29
+  TModeReg          = 0x2A
+  TPrescalerReg     = 0x2B
+  TReloadRegH       = 0x2C
+  TReloadRegL       = 0x2D
+  TCounterValueRegH = 0x2E
+  TCounterValueRegL = 0x2F
+  
+  Reserved30      = 0x30
+  TestSel1Reg     = 0x31
+  TestSel2Reg     = 0x32
+  TestPinEnReg    = 0x33
+  TestPinValueReg = 0x34
+  TestBusReg      = 0x35
+  AutoTestReg     = 0x36
+  VersionReg      = 0x37
+  AnalogTestReg   = 0x38
+  TestDAC1Reg     = 0x39
+  TestDAC2Reg     = 0x3A
+  TestADCReg      = 0x3B
+  Reserved31      = 0x3C
+  Reserved32      = 0x3D
+  Reserved33      = 0x3E
+  Reserved34      = 0x3F
+    
+  serNum = []
+  
+  
+  def __init__(self,spd=1000000):
+    spi.openSPI(speed=spd)
+    GPIO.setmode(GPIO.BOARD)
+    GPIO.setup(22, GPIO.OUT)
+    GPIO.output(self.NRSTPD, 1)
+    self.MFRC522_Init()
+  
+  def MFRC522_Reset(self):
+    self.Write_MFRC522(self.CommandReg, self.PCD_RESETPHASE)
+  
+  def Write_MFRC522(self,addr,val):
+    spi.transfer(((addr<<1)&0x7E,val))
+  
+  def Read_MFRC522(self,addr):
+    val = spi.transfer((((addr<<1)&0x7E) | 0x80,0))
+    return val[1]
+  
+  def SetBitMask(self, reg, mask):
+    tmp = self.Read_MFRC522(reg)
+    self.Write_MFRC522(reg, tmp | mask)
+    
+  def ClearBitMask(self, reg, mask):
+    tmp = self.Read_MFRC522(reg);
+    self.Write_MFRC522(reg, tmp & (~mask))
+  
+  def AntennaOn(self):
+    temp = self.Read_MFRC522(self.TxControlReg)
+    if(~(temp & 0x03)):
+      self.SetBitMask(self.TxControlReg, 0x03)
+  
+  def AntennaOff(self):
+    self.ClearBitMask(self.TxControlReg, 0x03)
+  
+  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
+    
+    return (status,backData,backLen)
+  
+  
+  def MFRC522_Request(self, reqMode):
+    status = None
+    backBits = None
+    TagType = []
+    
+    self.Write_MFRC522(self.BitFramingReg, 0x07)
+    
+    TagType.append(reqMode);
+    (status,backData,backBits) = self.MFRC522_ToCard(self.PCD_TRANSCEIVE, TagType)
+  
+    if ((status != self.MI_OK) | (backBits != 0x10)):
+      status = self.MI_ERR
+      
+    return (status,backBits)
+  
+  
+  def MFRC522_Anticoll(self):
+    backData = []
+    serNumCheck = 0
+    
+    serNum = []
+  
+    self.Write_MFRC522(self.BitFramingReg, 0x00)
+    
+    serNum.append(self.PICC_ANTICOLL)
+    serNum.append(0x20)
+    
+    (status,backData,backBits) = self.MFRC522_ToCard(self.PCD_TRANSCEIVE,serNum)
+    
+    if(status == self.MI_OK):
+      i = 0
+      if len(backData)==5:
+	while i<4:
+	  serNumCheck = serNumCheck ^ backData[i]
+	  i = i + 1
+	if serNumCheck != backData[i]:
+	  status = self.MI_ERR
+      else:
+	status = self.MI_ERR
+  
+    return (status,backData)
+  
+  def CalulateCRC(self, pIndata):
+    self.ClearBitMask(self.DivIrqReg, 0x04)
+    self.SetBitMask(self.FIFOLevelReg, 0x80);
+    i = 0
+    while i<len(pIndata):
+      self.Write_MFRC522(self.FIFODataReg, pIndata[i])
+      i = i + 1
+    self.Write_MFRC522(self.CommandReg, self.PCD_CALCCRC)
+    i = 0xFF
+    while True:
+      n = self.Read_MFRC522(self.DivIrqReg)
+      i = i - 1
+      if not ((i != 0) and not (n&0x04)):
+	break
+    pOutData = []
+    pOutData.append(self.Read_MFRC522(self.CRCResultRegL))
+    pOutData.append(self.Read_MFRC522(self.CRCResultRegM))
+    return pOutData
+  
+  def MFRC522_SelectTag(self, serNum):
+    backData = []
+    buf = []
+    buf.append(self.PICC_SElECTTAG)
+    buf.append(0x70)
+    i = 0
+    while i<5:
+      buf.append(serNum[i])
+      i = i + 1
+    pOut = self.CalulateCRC(buf)
+    buf.append(pOut[0])
+    buf.append(pOut[1])
+    (status, backData, backLen) = self.MFRC522_ToCard(self.PCD_TRANSCEIVE, buf)
+    if (status == self.MI_OK) and (backLen == 0x18):
+      size = backData[0]
+    else:
+      size = 0
+    return size
+  
+  def MFRC522_Auth(self, authMode, BlockAddr, Sectorkey, serNum):
+    buff = []
+    buff.append(authMode)
+    buff.append(BlockAddr)
+    i = 0
+    while(i < 6):
+      buff.append(Sectorkey[i])
+      i = i + 1
+    i = 0
+    while(i < 4):
+      buff.append(serNum[i])
+      i = i +1
+    (status, backData, backLen) = self.MFRC522_ToCard(self.PCD_AUTHENT,buff)
+    if not(status == self.MI_OK):
+      print "AUTH ERROR!!"
+    if not(self.Read_MFRC522(self.Status2Reg) & 0x08):
+      print "AUTH ERROR(status2reg & 0x08 != 0"
+  
+  def MFRC522_Read(self, blockAddr):
+    recvData = []
+    recvData.append(self.PICC_READ)
+    recvData.append(blockAddr)
+    pOut = self.CalulateCRC(recvData)
+    recvData.append(pOut[0])
+    recvData.append(pOut[1])
+    (status, backData, backLen) = self.MFRC522_ToCard(self.PCD_TRANSCEIVE, recvData)
+    if not(status == self.MI_OK):
+	print "Error while reading!"
+    
+    print "Got data size: "+str(backLen)
+    i = 0
+    if len(backData) == 16:
+	print "Sector "+str(blockAddr)+" "+str(backData)
+  
+  def MFRC522_Write(self, blockAddr, writeData):
+    buff = []
+    buff.append(self.PICC_WRITE)
+    buff.append(blockAddr)
+    crc = self.CalulateCRC(buff)
+    buff.append(crc[0])
+    buff.append(crc[1])
+    (status, backData, backLen) = self.MFRC522_ToCard(self.PCD_TRANSCEIVE, buff)
+    if not(status == self.MI_OK) or not(backLen == 4) or not((backData[0] & 0x0F) == 0x0A):
+	status = self.MI_ERR
+	print str(backLen)+" backdata &0x0F == 0x0A "+str(backData[0]&0x0F)
+    if status == self.MI_OK:
+	i = 0
+	buf = []
+	while i < 16:
+	  buf.append(writeData[i])
+	  i = i + 1
+	crc = self.CalulateCRC(buf)
+	buf.append(crc[0])
+	buf.append(crc[1])
+	(status, backData, backLen) = self.MFRC522_ToCard(self.PCD_TRANSCEIVE,buf)
+	if not(status == self.MI_OK) or not(backLen == 4) or not((backData[0] & 0x0F) == 0x0A):
+	  print "Error while writing"
+	if status == self.MI_OK:
+	  print "Data writen"
+  
+  
+  def MFRC522_Init(self):
+    GPIO.output(self.NRSTPD, 1)
+  
+    self.MFRC522_Reset();
+    
+    
+    self.Write_MFRC522(self.TModeReg, 0x8D)
+    self.Write_MFRC522(self.TPrescalerReg, 0x3E)
+    self.Write_MFRC522(self.TReloadRegL, 30)
+    self.Write_MFRC522(self.TReloadRegH, 0)
+    
+    self.Write_MFRC522(self.TxAutoReg, 0x40)
+    self.Write_MFRC522(self.ModeReg, 0x3D)
+    self.AntennaOn()
+  
+continue_reading = True
+# Capture SIGINT
+def end_read(signal,frame):
+  global continue_reading
+  print "Ctrl+C captured, ending read."
+  continue_reading = False
+  
+signal.signal(signal.SIGINT, end_read)
+  
+MIFAREReader = MFRC522()
+  
+while continue_reading:
+  (status,TagType) = MIFAREReader.MFRC522_Request(MIFAREReader.PICC_REQIDL)
+  
+  if status == MIFAREReader.MI_OK:
+    print "Card detected"
+  
+  (status,backData) = MIFAREReader.MFRC522_Anticoll()
+  if status == MIFAREReader.MI_OK:
+    print "Card read UID: "+str(backData[0])+","+str(backData[1])+","+str(backData[2])+","+str(backData[3])+","+str(backData[4])
+    MIFAREReader.MFRC522_SelectTag(backData)
+    key = [0xFF,0xFF,0xFF,0xFF,0xFF]
+  
+  
+    MIFAREReader.MFRC522_Auth(0x60,0,keyA,backData)
+    MIFAREReader.MFRC522_Read(0)
+    i = 1
+    while i < 64:
+	MIFAREReader.MFRC522_Auth(0x60,i,keyA,backData)
+	MIFAREReader.MFRC522_Read(i)
+	i = i + 1