Hi everyone, I am facing a problem with RFID card. I saved some data on RFID card and for some reason I can not read the card completey any more(see screenshot). This problem happend to more then 6 cards.
i have been using the example code from MFRC522 library (rfid_write_personal_data & rfid_read_personal_data ) with some changes (I was experimenting with code to understand it better). I also tried other card reader and I had the same issue. I wanted to know if the cards are still useable or should I replace them with new cards?
Thanks in advance
for me that looks as if you had a problem with your code.
Did you try to read it with the origial example code?
Yes, I tried and the result is in the screenshot.
did the code you used (the original example) ever run without the error?
yes, without any change from my side its working correctly, but when I changed the code I got this problem. sector 1 and 2 can not be read. other sector are able to be read. I just wanted to know if they still useable or not. If i am not sure if they gonna work. I will not spend time trying to fix them.
OK, so the problem must be your code-modification.
If the error now is showing up also with the unmodified code, it seems that your code has "killed"! the hardware.
I think to get help, you should show us the code.
Hello
is your problem solved now??
Hi
No, I just replaced the RFID cards.
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