I want to implement or connect one of the communication ports (Serial1, Serial2, or Serial3) to a USB port on my PC. my initial purpose is to use this as a debugging tool to get the traffic off the Serial0 port. I just got a atmega2560.
I thought I could just wire the communication pins RXx and TXx (x = 1, 2 or 3) to a USB jack. but when I connect it to my PC, the PC issues an error “detected power surge on USB device”, then is disables the device. I do not want to purchase a shield but rather DIY.
Any help, suggestions and directions are greatly appreciated. Thanks