Add write retry

[kinsi55]

Apparently, flashing with my particular Serial adapter is "spotty" and it will fail at some random sector (Cannot even go beyond 115200 baud), so maybe it would make sense to add a retry mechanism when writing?

Edit: Found a different adapter and managed to flash with that one

[openshwprojects]

T or N?

I will consider that, but does it only fail during write, or do you need an erase and read retries as well?

[kinsi55]

N chip, I tried going lower than 115200 manually but it was unable to configure anything that I tried (76800 & 57600).

Read and erase never failed for me, only on write it would always randomly fail at like 20-40% I would say