Arduino core doesn't appear to be working

[wx4cb]

ok. so the CORE is working. Serial1 is the serial pins on the 28 pin header, but there is nothing coming out of the USB side as for the serial monitor. this is not how it is supposed to work. so unless I am doing something wrong, then there is an issue with the arduino side of thngs.

See my other post here:

Serial Port device names

also… what are the rx/tx pins tied to that are next to the 28 pin header? they don’t seem to be tied to ANY serial port either any of the arduino pins or any of the linux serial device names - outlined in red dotted line [image]