Hi all, I tried to implement the reference Arduino design for the HTCC AM02 and so far nearly everything works fine. I found however that neither the reset button nor “automatic” bootloader (aka flash) mode via serial is possible. Could someone give me some advice?
It is possible to press both RESET and USR1 button on startup to enter the bootloader mode and firmware flashes fine. However I thought it’s also possible to do this automatically via a RTS or DTR pin?
It’s designed with EasyEDA, if someone is interested in the PCB/Schema files I’ll upload them somewhere