I don't think AVR-LibC supports '%llu'
You can print out the return value from sscanf() to get an idea of what went wrong. It should return 1 if your one format string was matched successfully. I suspect it will return 0 or -1 (EOF).
I don't think AVR-LibC supports '%llu'
You can print out the return value from sscanf() to get an idea of what went wrong. It should return 1 if your one format string was matched successfully. I suspect it will return 0 or -1 (EOF).