Read a RFID Card using Wiegand protocol

Started by vitalianoneto, April 04, 2014, 12:12:15 AM

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I'm trying to read a RFID Card using the Wiegand protocol, but I couldn't make the pin to read the Input fast as the Wiegand requires.

Other alternative is to set 2 pins to Interrupt mode, but I don't know how to do this in C/C++.

Has anyone used the A20 to use IO fast, in the microseconds scale?

Thanks in advance,