Error when trying to run read.py

File "Read.py", line 41, in MIFAREReader = MFRC522.MFRC522() File "/home/pi/MFRC522-python/MFRC522.py", line 135, in init self.MFRC522_Init() File "/home/pi/MFRC522-python/MFRC522.py", line 406, in MFRC522_Init self.MFRC522_Reset(); File "/home/pi/MFRC522-python/MFRC522.py", line 138, in MFRC522_Reset self.Write_MFRC522(self.CommandReg, self.PCD_RESETPHASE) File "/home/pi/MFRC522-python/MFRC522.py", line 141, in Write_MFRC522 spi.transfer(((addr<<1)&0x7E,val)) TypeError: function takes exactly 2 arguments (1 given)

Please help me to solve this problem

[Freddy789]

look here i had the same issue and this helped me solve it
btw look around before you open a question the link is the exact same problem you are facing
click here

I tried it, but I still get the same problem. Sorry, but I also read the issue

…

On Thu, Jul 4, 2019 at 3:07 PM Freddy789 ***@***.***> wrote: look here i had the same issue and this helped me solve it btw look around before you open a question lol the link is the exact same problem you are facing #69 <#69> — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub <#76?email_source=notifications&email_token=AJS6MZ3BLQ22NUECZ4V4S2DP5WVULA5CNFSM4H5B3EAKYY3PNVWWK3TUL52HS4DFVREXG43VMVBW63LNMVXHJKTDN5WW2ZLOORPWSZGODZGVLNA#issuecomment-508384692>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AJS6MZ5JLBL4ODEUGHIGRHTP5WVULANCNFSM4H5B3EAA> .

[scimad]

Reverting the SPI-Py to 8cce26b resolved my issue as suggested in the following link.

#69 (comment)

Make sure to change directory to the cloned project directory before running the last line in the link above.

[lucassarcanjo]

Hello @scimad and @lyocyhs, I've got the same problem. With some modifications on this library, I was able to run Read.py correctly.

My changes are shared in this pull request.

[priyesh1112]

@lucassarcanjo Thanks a lot for your coordintation in making this post worth usable and improving the flaws in the syntax. I have followed the new directories which you have mentioned in the above comments. I am getting the below error right now. I would be glad if you could assist me,

Welcome to the MFRC522 data read example
Press Ctrl-C to stop.
Traceback (most recent call last):
File "rfidreader.py", line 51, in
(status,TagType) = MIFAREReader.MFRC522_Request(MIFAREReader.PICC_REQIDL)
File "/home/pi/MFRC522-python/MFRC522.py", line 239, in MFRC522_Request
self.Write_MFRC522(self.BitFramingReg, 0x07)
TypeError: Write_MFRC522() takes 2 positional arguments but 3 were given

Thanks and Regards

[victormagalhaess]

Hello @priyesh1112 , I think I got what can be the reason of your issue.
In @lucassarcanjo 's code, MFRC522.py, line 310, a variable called "backData" was misspelled as "ackdata", I send him a review for correcting his code, until it happens, you can change the line

      print("Size: ".format(ackData[0]))

to

      print("Size: ".format(backData[0]))

It should work.

[priyesh1112]

@victormagalhaess thanks a lot for your feedback. It worked fine. Now I am facing some other issues which I am trying to rectify :)

[priyesh1112]

/home/pi/MFRC522.py:133: RuntimeWarning: This channel is already in use, continuing anyway. Use GPIO.setwarnings(False) to disable warnings.
GPIO.setup(self.NRSTPD, GPIO.OUT)
Welcome to the MFRC522 data read example
Press Ctrl-C to stop.
Traceback (most recent call last):
File "/home/pi/rfidreader.py", line 51, in
(status,TagType) = MIFAREReader.MFRC522_Request(MIFAREReader.PICC_REQIDL)
File "/home/pi/MFRC522.py", line 242, in MFRC522_Request
(status, backData, backBits) = self.MFRC522_ToCard(self.PCD_TRANSCEIVE, TagType)
TypeError: 'NoneType' object is not iterable

[victormagalhaess]

Hello @priyesh1112 , can you send me your code? I'll have an raspberry available tomorrow, so if you send me I can test and try to solve your issue with a practical approach (this way I can test if any other issues spots).

[priyesh1112]

Thanks @victormagalhaess that is really kind of you. I am trying to solve it but if it does not happen, I will copy the code and send it to you so that you may verify. I have also consulted @lucassarcanjo but he has not responded yet. I will let you know. Thanks and Regards

[priyesh1112]

@victormagalhaess could you share your email id so that I can send you my code? Though it is exactly the same as Lucas has posted. But, I am facing different error.