(possibly) noticed in the gitter https://gitter.im/tinkerman-cat/espurna?at=61abba5a76e37917551e4a2f refactoring causality, as there's no longer an explicit Serial.begin for RFB_PROVIDER_EFM8BB1 in the hardware setup in the system.cpp (also, from not including wip serial changes that did serial port setup :/)pull/2490/head