ISP on Atmel-ICE does not support debugging

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I know it's an old topic. But I'm curious on what condition does Atemle Studio 7 decide to show this "ISP on Atmel-ICE does not support debugging" message. It's about a new PCB with an atmega328p mounted on it. I managed to set de DWEN fuse. But running the debug session I got this message. Nothing is attached to the reset pin. No capacitor, no resistor. Tested by oscilloscoop nothing happens on the RESET/MOSI/MISO pins before the message appears. RESET stays high. I think I remembered that when de DWEN fuse is set the reset pin initially will be low but I'm not sure. Also when pressing the message [OK] button then I see a lot of activity on the reset pin. Hope someone can help me out.

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Let me answer myself: set the project tool interface to debugWIRE in stead of ISP...

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You shouldnt touch the DWEN fuse. Just select debugWire in you project. If the DWEN is not set, then Atmel Studio will take care of it...

:: Morten

 

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