I just tumbled into a little dead lock that probably some of you guys know a solution too ... I'm actually surprised that I couldn't find the solution by searching the web already. Am I really the only one whos dum enough to do something like this?
Anyways, here's what happened
I'm currently debugging an ISR to trigger an external watchdog. I tried to get some more details by accessing my Atmega328bp via debug wire. I could set breakpoints and so forth but the behaviour was somewhat flaky. I though "maybe it's the Watchdog interfering with the debug wire, cause they boath have access to the reset line right?!" so I disabled the reset pin and tadaaaa got stuck. Now I can't access the Atmega either via DebugWire nor via SPI, due to the debugWire and ResetDsiable Fuse being set (at least that's my assumption)
Is there any trick how I can access the fuses now so I can disable the debugWire or ResetDisable Fuse? Unfortunately I only have an Atmel-ICE programmer so HVPP is not available I guess?!
Any help would be highly appreciated,