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miguelbalboa / rfid

Arduino RFID Library for MFRC522
The Unlicense
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Board won't read tags, but gets version #450

Closed avaldes95 closed 5 years ago

avaldes95 commented 5 years ago

Using the firmware check gets me the proper firmware 0x92 = v2.0 However, it says that it has a "defect or unknown". It worked with a library fork from this that I found: https://github.com/ljos/MFRC522

I'm trying to not rewrite this code with the other library, so any solutions?

Rotzbua commented 5 years ago

https://github.com/miguelbalboa/rfid/blob/master/.github/ISSUE_TEMPLATE.md

avaldes95 commented 5 years ago

Windows 10 Arduino IDE 1.8.8 Release v1.4.1 Arduino Uno RFID RC522

Problem: When I use the firmware check, the response is: Firmware 0x92 v2.0 Result: Defect or Unknown

https://github.com/miguelbalboa/rfid/blob/master/examples/firmware_check/firmware_check.ino

Then, I tried to run another one of the programs to try to scan a tag and it doesn't scan a tag or card that came with the package.

Rotzbua commented 5 years ago

Then the firmware of your chip is damaged or maybe you got a fake mfrc522. You can not fix that. You can compare the printing on your chip with known bad chips, see #428.

avaldes95 commented 5 years ago

but it works with another library that is a branch of a previous release of this one

Rotzbua commented 5 years ago

The firmware_check.ino checks the firmware of the chip according to the official data sheet. If the check fails, there must be something wrong with your chip.

There are some fake chips which do not implement all functions of the genuine chip. The reported version was 0x12 maybe they now report version 0x92.

It is possible that the older version of this library works with this fake chip because it do not use all functions of the genuine chip.

lmmeng commented 5 years ago

but it works with another library that is a branch of a previous release of this one

Than please try to find the differences and post them here. Maybe we can find a reason and provide a fix.

Rotzbua commented 5 years ago

@avaldes95 Any update?

jbarros35 commented 5 years ago

I need to know where to get the library which works. I don't need the "all functions for the real board" I only need to read tags!

Maclec commented 4 years ago

MFRC522 Digital self test

Firmware Version: 0x91 = v1.0

Only known versions supported

Performing test...

Result: DEFECT or UNKNOWN I am using RFID MFRC522 and facing this type of problem . please help me , what can i do for my project.