gr-em4100_decoder

This is GRC (GNU Radio Conpanion) block for EM4100 (125kHz) RFID Cards.

Flow graph

Decoded result

How to use

1. Record RFID communication signals with AnalogDiscovery2 and Waveforms.
   

• Scope Mode @ 1Msps

1. Export waveform as csv file.
   
2. Convert csv file to IEEE754 single precision floating point binary file with csv_to_ieee754_converter.
3. Use this decoder block. The result ID is shown to std out.