Writing to a non zero address results in verify errors

[bitli]

Writing an hex file with a non zero base (example 0x200, as produced by the Arduino IDE) on Attiny814 results in verify errors, as it is read back from (0x8000), the base address of the flash (pyupdi:154), not the offset address passed as parameter and calculated at nvm:217
Changing the line pyupdy:154 to
readback = nvm.read_flash(start_address, len(data))
solves the problem apparently.

[mraardvark]

Thanks @bitli
Unfortunately I don't have a test setup for pyupdi to verify this. Ah I see you have a PR :)
FYI: If you are interested, pymcuprog is a tested and maintained package that incorporates pyupdi 'backend'