There are several easy hacks to talk UPDI over any standard UART device. These started with some advice from `pyupdi` about how to just use a 4k7 resistor on the TX line of any USB-UART bridge to turn the thing into a half-duplex onewire. I now make and sell two separate products on my Tindie store[2,3] for doing this and I also link to my Device::AVR::UPDI CPAN module containing another implementation of this.
I figure now's about the time for avrdude itself to have an implementation too, so the standard AVR code-uploading tool can do it. I'm imagining for example: $ avrdude -c updi-uart -P /dev/ttyUSB0 -p attiny814 ... Would anyone like to have a go at this, based on these two examples? Or failing that, give me a hand-hold at how to add new programmer support so I can do it? Thanks, : https://github.com/mraardvark/pyupdi : https://www.tindie.com/products/leonerd/avr-updi-programming-cable/ : https://www.tindie.com/products/leonerd/avr-updi-programmer-with-12v/ : https://metacpan.org/pod/release/PEVANS/Device-AVR-UPDI-0.03/bin/avr-updi -- Paul "LeoNerd" Evans leon...@leonerd.org.uk | https://metacpan.org/author/PEVANS http://www.leonerd.org.uk/ | https://www.tindie.com/stores/leonerd/
Description: OpenPGP digital signature