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Add support in SimpleMFRC522 to read or write any sector #24

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Add support in SimpleMFRC522 to read or write any sector #24

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548b57d
Add support in SimpleMFRC522 to read or write any sector
May 19, 2020
afcbbf8
Add parameter to allow multiple retries
Jun 22, 2020
aed7b8d
Allow user to specify pin mode
Nov 25, 2020
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66 changes: 38 additions & 28 deletions mfrc522/MFRC522.py
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Original file line number Diff line number Diff line change
@@ -26,6 +26,7 @@
import time
import logging


class MFRC522:
MAX_LEN = 16

@@ -125,31 +126,35 @@ class MFRC522:

serNum = []

def __init__(self, bus=0, device=0, spd=1000000, pin_mode=10, pin_rst=-1, debugLevel='WARNING'):
def __init__(self, bus=0, device=0, spd=1000000, pin_mode=GPIO.BOARD, pin_rst=-1, log_verbose=False):
self.logger = logging.getLogger(self.__class__.__name__)
if log_verbose:
self.logger.setLevel(logging.DEBUG)
else:
self.logger.setLevel(logging.INFO)

self.logger.info('Setting up SPI')
self.spi = spidev.SpiDev()
self.spi.open(bus, device)
self.spi.max_speed_hz = spd

self.logger = logging.getLogger('mfrc522Logger')
self.logger.addHandler(logging.StreamHandler())
level = logging.getLevelName(debugLevel)
self.logger.setLevel(level)

gpioMode = GPIO.getmode()

if gpioMode is None:
GPIO.setmode(pin_mode)
else:
pin_mode = gpioMode

if pin_rst == -1:
if pin_mode == 11:
pin_rst = 15
else:
pin_rst = 22


self.logger.info('Setting up RST')
GPIO.setup(pin_rst, GPIO.OUT)
GPIO.output(pin_rst, 1)

self.logger.info('Setting up MFRC522')
self.MFRC522_Init()

def MFRC522_Reset(self):
@@ -249,32 +254,30 @@ def MFRC522_ToCard(self, command, sendData):
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)
(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)
(status, backData, backBits) = self.MFRC522_ToCard(self.PCD_TRANSCEIVE,
serNum)

if (status == self.MI_OK):
i = 0
@@ -308,24 +311,24 @@ def CalulateCRC(self, pIndata):
return pOutData

def MFRC522_SelectTag(self, serNum):
backData = []
buf = []
buf.append(self.PICC_SElECTTAG)
buf.append(0x70)

for i in range(5):
buf.append(serNum[i])

pOut = self.CalulateCRC(buf)
buf.append(pOut[0])
buf.append(pOut[1])
(status, backData, backLen) = self.MFRC522_ToCard(self.PCD_TRANSCEIVE, buf)
(status, backData, backLen) = self.MFRC522_ToCard(self.PCD_TRANSCEIVE,
buf)

if (status == self.MI_OK) and (backLen == 0x18):
self.logger.debug("Size: " + str(backData[0]))
return backData[0]
return status, backData[0]
else:
return 0
return status, None

def MFRC522_Auth(self, authMode, BlockAddr, Sectorkey, serNum):
buff = []
@@ -345,11 +348,13 @@ def MFRC522_Auth(self, authMode, BlockAddr, Sectorkey, serNum):
buff.append(serNum[i])

# Now we start the authentication itself
(status, backData, backLen) = self.MFRC522_ToCard(self.PCD_AUTHENT, buff)
(status, backData, backLen) = self.MFRC522_ToCard(self.PCD_AUTHENT,
buff)

# Check if an error occurred
if not (status == self.MI_OK):
self.logger.error("AUTH ERROR!!")

if not (self.Read_MFRC522(self.Status2Reg) & 0x08) != 0:
self.logger.error("AUTH ERROR(status2reg & 0x08) != 0")

@@ -366,7 +371,8 @@ def MFRC522_Read(self, blockAddr):
pOut = self.CalulateCRC(recvData)
recvData.append(pOut[0])
recvData.append(pOut[1])
(status, backData, backLen) = self.MFRC522_ToCard(self.PCD_TRANSCEIVE, recvData)
(status, backData, backLen) = self.MFRC522_ToCard(self.PCD_TRANSCEIVE,
recvData)
if not (status == self.MI_OK):
self.logger.error("Error while reading!")

@@ -383,11 +389,14 @@ def MFRC522_Write(self, blockAddr, writeData):
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, 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

self.logger.debug("%s backdata &0x0F == 0x0A %s" % (backLen, backData[0] & 0x0F))
self.logger.debug(
"%s backdata &0x0F == 0x0A %s" % (backLen, backData[0] & 0x0F))
if status == self.MI_OK:
buf = []
for i in range(16):
@@ -396,13 +405,14 @@ def MFRC522_Write(self, blockAddr, writeData):
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):
(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):
self.logger.error("Error while writing")
if status == self.MI_OK:
self.logger.debug("Data written")


def MFRC522_DumpClassic1K(self, key, uid):
for i in range(64):
status = self.MFRC522_Auth(self.PICC_AUTHENT1A, i, key, uid)
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