DCC decoder module

[vsky279]

Missing feature

DCC protocol decoder.

Justification

DCC protocol is a standard for a system to operate model railways digitally. ESP is a piece of hardware that could be use to operate features on the model railroad, e.g. operate turnout, lights in a house, etc.

Workarounds

DCC protocol operates at high speed timings (138µs) which cannot be handled by the standard gpio module.