Colin Bookman / HID_Wiegand

A library to read HID RFID cards through the wiegand protocol. This was tested with the HID ProxPoint Plus 6005BG00.

Dependents:   HID_ProxCard_Wiegand_Example

Wiegand Library for HID ProxPoint Plus

While this library should be able to read any wiegand input, the buffer can only store 64 bits, and it expects there to be less than a 5ms delay between each bit sent.

Here is a picture of some example wiring:

To use this library use the following pin attachments, the 6005BG00 has its pinouts on its back label (top right).

Here is a picuture of it wired up:

void void onCardRead();
Wiegand rfid(p30, p29, p28, &onCardRead);

int main() {
  while(1) {
    rfid.doEvents(); //checks if data has been fully read, and calls the callback
  }
}

void onCardRead() {
  /*
    Do stuff with data, as we've fully read the card.
    WHen this function exits, RFID reader will be reset to read
    Another Card
  */
   //returns the unique student identifier on a buzzcard  (6 digit number on back of buzzcard below gatech seal)
    uint64_t rawCardData = rfid.getBits(14,33); 
}

Description of public methods

Example Program

Here is a video of the example program in action:

ProxPoint Plus 6005BG00 Oscilloscope Capture

Gatech BuzzCard Protocol

The rfid buzzcard unique student identifier can be found on the back of your buzzcard below the shiny gatech seal (6 digit number). Each buzzcard's rfid tag stores 35 bits of data, but only bits [14,33] contain your id (bit index starts at 0, and range is inclusive).