TonBERRY/micropython-mfrc522
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add NTAG NFC

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This commit is contained in:
danjperron
2024-01-17 16:20:18 -05:00
parent c2f484aaef
commit f50b0c513c
2 changed files with 108 additions and 4 deletions
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16
Pico_example/Pico_read.py
View File

@@ -23,6 +23,7 @@ try:
while True:
reader.init()
(stat, tag_type) = reader.request(reader.REQIDL)
#print('request stat:',stat,' tag_type:',tag_type)
if stat == reader.OK:
@@ -31,9 +32,18 @@ try:
continue
if stat == reader.OK:
print("Card detected {} uid={}".format(hex(int.from_bytes(bytes(uid),"little",False)).upper(),reader.tohexstring(uid)))
defaultKey = [255,255,255,255,255,255]
reader.MFRC522_DumpClassic1K(uid, Start=0, End=64, keyA=defaultKey)
print("Done")
if reader.IsNTAG():
print("Got NTAG{}".format(reader.NTAG))
reader.MFRC522_Dump_NTAG(Start=0,End=reader.NTAG_MaxPage)
#print("Write Page 5 to 0x1,0x2,0x3,0x4 in 2 second")
#utime.sleep(2)
#data = [1,2,3,4]
#reader.writeNTAGPage(5,data)
#reader.MFRC522_Dump_NTAG(uid,Start=5,End=6)
else:
defaultKey = [255,255,255,255,255,255]
reader.MFRC522_DumpClassic1K(Start=0, End=64, keyA=defaultKey)
PreviousCard = uid
else:
pass

96
mfrc522.py
View File

@@ -9,6 +9,12 @@ class MFRC522:
NOTAGERR = 1
ERR = 2
NTAG_213 = 213
NTAG_215 = 215
NTAG_216 = 216
NTAG_NONE = 0
REQIDL = 0x26
REQALL = 0x52
AUTHENT1A = 0x60
@@ -29,7 +35,8 @@ class MFRC522:
self.rst.value(0)
self.cs.value(1)
self.NTAG = 0
self.NTAG_MaxPage = 0
board = uname()[0]
if board == 'WiPy' or board == 'LoPy' or board == 'FiPy':
@@ -379,4 +386,91 @@ class MFRC522:
return self.ERR
return self.OK
def MFRC522_Dump_NTAG(self,Start=0, End=135):
for absoluteBlock in range(Start,End,4):
MaxIndex = 4 * 135
status = self.OK
print("Page {:02d}: ".format(absoluteBlock),end="")
if status == self.OK:
status, block = self.read(absoluteBlock)
if status == self.ERR:
break
else:
Index = absoluteBlock*4
for i in range(len(block)):
if Index < MaxIndex :
print("{:02X} ".format(block[i]),end="")
else:
print(" ",end="")
if (i%4)==3:
print(" ",end="")
Index+=1
print(" ",end="")
Index = absoluteBlock*4
for value in block:
if Index < MaxIndex:
if (value > 0x20) and (value < 0x7f):
print(chr(value),end="")
else:
print('.',end="")
Index+=1
print("")
else:
break
if status == self.ERR:
print("Authentication error")
return self.ERR
return self.OK
def writeNTAGPage(self,page,data):
if page>self.NTAG_MaxPage:
return self.ERR
if page < 4:
return self.ERR
if len(data) != 4:
return self.ERR
return self.write(page,data+[0]*12)
def getNTAGVersion(self):
buf = [0x60]
buf += self._crc(buf)
stat, recv,_ = self._tocard(0x0C, buf)
return stat, recv
#Version NTAG213 = [0x0 ,0x4, 0x4, 0x2, 0x1, 0x0,0x0f, 0x3]
#Version NTAG215 = [0x0 ,0x4, 0x4, 0x2, 0x1, 0x0,0x11, 0x3]
#Version NTAG216 = [0x0 ,0x4, 0x4, 0x2, 0x1, 0x0,0x13, 0x3]
def IsNTAG(self):
self.NTAG = self.NTAG_NONE
self.NTAG_MaxPage=0
(stat , rcv) = self.getNTAGVersion()
if stat == self.OK:
if len(rcv) < 8:
return False #do we have at least 8 bytes
if rcv[0] != 0:
return False #check header
if rcv[1] != 4:
return False #check Vendor ID
if rcv[2] != 4:
return False #check product type
if rcv[3] != 2:
return False #check subtype
if rcv[7] != 3:
return False #check protocol
if rcv[6] == 0xf:
self.NTAG= self.NTAG_213
self.NTAG_MaxPage = 44
return True
if rcv[6] == 0x11:
self.NTAG= self.NTAG_215
self.NTAG_MaxPage = 134
return True
if rcv[7] == 0x13:
self.NTAG= self.NTAG_216
self.NTAG_MaxPage = 230
return True
return false