Guys and Girls; read and weep here to check my efforts on getting the RFID-RC522 to work :smile: first of all, what is it? the RFID-RC522 is a very cheap RFID reader\writer. it’s small, it works and it’s cheap. that makes it awesome :smile: you can buy it at DX for about 11 bucks including shipp…

@Stivi , you forgot to mention that you have your Electron plugged into an Asset Tracker Shield :wink: This does change things quite a bit and also counts as leading us on :sunglasses: Asset Tracker Shield already uses A2 as SPI SS for the accelerometer https://github.com/spark/shields/blob/master…

@Ambition1906 - The Serial.println(rfid); is where it was printing. Once I had the example code running, I quickly mangled it to suit my own purposes, so I stripped out the “Card UID:” text. Sorry about that confusion! The cards I have are from the Adafruit MiFare Classic (13.56 MHz) tag assortme…

@wgbartley , ok thanks for the update.

@peekay123 - I’ve submitted a pull request for the MFRC522_RFID_Library that adds some updates from the original library: PCD_RxGain enum PCD_AntennaOff() PCD_GetAntennaGain() PCD_SetAntennaGain() MIFARE_GetValue() MIFARE_SetValue() MIFARE_OpenUidBackdoor() MIFARE_SetUid() MIFARE_UnbrickUidSector(…

As always, the folks looking to show how these system can be broken are ahead in the game: http://www.eng.tau.ac.il/~yash/kw-usenix06/ See particularly sections 3 and 4.

@Ambition1906 , I found the bug!!! There are three key variables used for counters that are cast as “char”, assuming this is a SIGNED 8 bit type. However, the firmware code casts “char” as an UNSIGNED 8 bit type. So, tests like: for (char i = no_of_sectors - 1; i >= 0; i--) { will NEVER be less …

@Ambition1906 , I have reading all the card types. One thing to remember when running the DumpInfo example is to hold the card over the reader until ALL the data is read and printed. I was taking the card away to fast and getting errors! :smile:

@peekay123 , ok, thanks for the tip. I’ll make sure to do that.

@peekay123 , I just tested it from your github and it works as you said!!! Both the 1k and the Ultralight read perfectly after I compiled and flashed using the CLI! Thanks so much for your help! :smiley:

Good morning, I’ve got a new RFID-RC522 and a couple of tags. First of all thank you for this library. I got my RFID-RC522 to work - wonderful. But … All tags I have tried with the example DumpInfo show me the card UID and the PICC type (MIFARE 1KB), but then I get PCD()_Authenticate() failed: Er…

Getting the RFID-RC522 to work! [SOLVED]

Firmware Libraries

Ambition1906 January 26, 2015, 4:36pm 166

@peekay123 Awesome!!! I’ll download and reflash tonight! (Cant wait!)

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Getting the RFID-RC522 to work! [SOLVED]

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