fast standalone UPDI programming library

Adafruit Industries · Oct 5, 2021 · 1m

this may be helpful for folks using the latest attiny and atmega chips that are programmed with "synch uart" UPDI rather than "SPI" AVR-ISP: we've updated our self-contained/standalone programming library to add UPDI support! the library is here, https://github.com/adafruit/Adafruit_AVRProg example here: https://github.com/adafruit/Adafruit_AVRProg/tree/master/examples/attiny817_updiprog we can erase-program-verify an 8KB flash chip in 2 seconds, super fast. great for loading firmware in production. thanks to bradanlane's portaprog for much of the updi support implementation…