I was hoping to use UART4 (pins c2 and c3) on the electron. Is it currently supported in firmware / if not will it be in the future? Is my only option for a UART beyond USB and Serial1 without using the RGB led pins to use a SoftwareSerial port?
It still mentions Serial2 & Serial3 where the former is actually talking to the cell modem (I think) and the latter is actually unavailable in code.
It’s also confusing that you can use Serial1,Serial2,Serial4 & Serial5, but there are only three USARTs documented.
v002 of the Pinout PDF has an error in the lower left of the Legend, UART4 and UART5 should be Serial4 and Serial5, not Serial2 and Serial3.
You can use Serial2 on the electron just like the Photon… it’s kind of hard to use though, and requires hardware modifications. Good thing there are 3 other hardware Serial ports available on the Electron