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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

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