Ứng dụng PWM giải mã RFID EM4100 125KHz

Link tham khảo:
https://www.serasidis.gr/circuits/RFID_reader/125kHz_RFID_reader.htm
Link file pdf mô tả protocol:
https://drive.google.com/open?id=1ET4z_WEFL_eRFaNSvebu8PEy5TjU1AyW
Link project sử dụng MS51FB9AE / N76E003AT20:
https://drive.google.com/open?id=1WoacZY1E25mbS48BX9hX3OnuevH9Bszj