Wiegand card reader driver library
Import libraryCardReader
Wiegand card reader driver library
This is a Wiegand 2 signal (Data0, Data1) card reader interface library.
Information
Todo - parity checking.
Wiegand technology References
- How Do Wiegand Card Readers and Devices Work
- HID
- ib technology
- Pyramid
- Mercury - Missing Diagrams
- RS2 Technologies - Some documented card formats
Hobbyist project
Library use example
/* * Wiegand card reader driver library * Copyright (c) 2012 Neal Horman - http://www.wanlink.com * * License: MIT open source (http://opensource.org/licenses/MIT) * Summary; * Use / modify / distribute / publish it how you want and * if you use it, or don't, you can't hold me liable for how * it does or doesn't work. * If it doesn't work how you want, don't use it, or change * it so that it does work. */ #include "mbed.h" #include "ReaderWiegand.h" Serial gSerial(USBTX, USBRX); ReaderWiegand gReader(p10,p11); int main() { gSerial.printf("Ready\r\n"); while(1) { if(gReader.isNew()) { uint8_t bq = gReader.bitCount(); uint64_t bits = gReader.bits(); for(uint8_t i=0; i<bq; i++) gSerial.printf("%c",'0' + ( ( bits & ( (uint64_t)1 << i ) ) != 0)); gSerial.printf(" bq: %u h: 0x%llX ",bq,bits); if(gReader.isValid()) gSerial.printf("f: %lu, c: %lu\r\n",gReader.facility(),gReader.card()); else gSerial.printf("Unknown format\r\n"); gReader.old(); } } }