Closed maxpromer closed 5 years ago
What type of programmer are you using?
SCK period: 0.1 us
is 10MHz SPI frequency, which would be too fast.
I try USBasp and Arduino Uno (Arduino Uno R3 upload ArduinoISP sketch). How to change SPI frequency ?
If you are using the ArduinoISP sketch then SPI frequency is slow enough. Maybe it is a hardware problem. What board with ATmega328pb are you using? If it is a selfmade board, then compare it with our Wattuino Pro Mini PB.
Hello !, I have ATmega328pb-au and i want to upload arduino bootloader. five chip i try to upload bootloader and there have same error.
Thank for replay.