Using ATmega328PB-mini Xplained board and Atmel Studio 7 (Version 7.0.1645)
I have been programming part successfully for past week, now attempting to user debugger.
Attempted to enter debug mode: got the "do you want to use SPI to enable the DWEN fuse?" message.
Now I get "Failed to enable DW. Failed to enter programming mode.Error status received: Got 0xC0. Expected 0x00."
Now if I try to program part I get same "Failed to enter programming mode" error.
Maybe it is stuck in programming mode? Debug->Stop debugging is greyed out.
Cycle power? Tried multiple times, no help.
If I try Debug->Start Debugging and Break or Debug->Start without Debugging, I get "Failed to launch debug session with debugWire."
Then asks that the reset line be checked. This Xplained board has no jumpers on it. The schematic shows a 3.3K pullup on RESET.
Do I need to unsolder this resistor?
Am I doing something else wrong?