I’m happily using my USV AVR Programmer 2.1 both to program (ISP) and debug via Serial (sending messages that I can read on my computer).
Everything works fine, but I wanted to send some bytes from the computer to the board using the Serial interface embedded in the Arduino IDE and it looks like the information is not being sent to the board.
I’m powering the board from the programmer’s AVR connector, so I’m only connecting the TX and RX lines of the USB-to-TTL connector.
With the same exact connections, I can read the board outputs, but not write to it. Am I missing something basic?
Thanks a lot!