Peak Detection

RFID hacking preamble: a new peak detection for the proxmark3

Introduction Building upon the IIR filter from the last post we’re now going to improve the edge/peak detection fpga module. Why The current algorithm is really simple, maybe too simple: whenever the ADC value is above (resp. below) a hardcoded value, it outputs 1 (resp. 0) with hysteresis. There are two problems with that: well first, the hardcoded values… For some reason no one has really complained about it so far (?