Hi Bruce,
If the software is anything like the gh60 keyboard then there is a button on the
board that gets you into programming mode. I'll assume you have the ELF file you
want to flash, let's call it `firmware.elf'. When the board is in programming
mode:
1. avr-objcopy -O ihex firmware.elf
2. su
Hello
I personally prefer hardware programmer named "AVR Dragon"->
https://www.microchip.com/DevelopmentTools/ProductDetails/PartNO/ATAVRDRAGON
You can communicate with mcpu using avrdude. Command line should looks like:
avrdude -p m32u4 -c dragon_isp -P usb
+ options for selected operatio
