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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)

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