miguelbalboa / rfid

Arduino RFID Library for MFRC522
The Unlicense
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FM17522 Documentation #537

Closed a-v-s closed 3 years ago

a-v-s commented 3 years ago

My apologies, this is not a bug report, but rather a request for information.

I see in the source code you have defined a hardware ID and a firmware reference for the Fudan Micro FM17522. I am trying to locate the documentation those values are taken from. I am only able to locate the short datasheet, but no detailed datasheet. Is there any such information, or are these values collected from reading back a chip?

Rotzbua commented 3 years ago

Reference pr #106. Maybe the values are from the chip rather than from a data sheet. You could ask @socram8888.

socram8888 commented 3 years ago

The values are from a known working chip indeed. I could not find any datasheet where those would be documented.

Rotzbua commented 3 years ago

@a-v-s The company is still in business. You could try to request a data sheet.

a-v-s commented 3 years ago

Thank you for your responses. I'll contact them and see if they reply.

a-v-s commented 3 years ago

I've tried to contact them, but I've got no response. I wasn't even sure if the contact form on their website was functional.

Nevertheless, I've been looking at their short datasheets for the FM17522 and FM17550. One thing I noticed looking at those datasheet, it mentions the FM17522 supports ISO 14443-A, and the FM17550 both A and B, but it does not mention MIFARE. This makes me wonder whether they are equivalent of MFRC522 and MFRC523, or lack the MFAuthent command.

Rotzbua commented 3 years ago

Ok, thanks for the feedback.

The FM17522 should be fully compatible to the original mfrc522. So it should support the MFAuthent command. In reality it looks like 99% of the project only use the uid so it could be that there is a difference or problem.

I will close the issue due the fact, that even the manufacturer does not react or (in my opinion) no full datasheet exists.