Does anyone have any experience with this debugger?
I have been experimenting with it and is a great little project.
Except after a while it is not....
I have two tinies that are stuck in dwEnable mode. They run the code loaded into them perfectly well. The various dw commands work.
However when I disable dw.... the ISP interface does not work.
I have checked MOSI, MISO, SCK and nReset and all waveforms look OK. Except that the MISO waveform always mirrors the the MOSI waveform. i.e. there s no response form the target uc.
I have run test code on the 328 master and all digital pins can generate high/low conditions and detect same. So the master end seems OK.
It feels like I have somehow cooked some part of the IO pins on the Tiny. Not sure how I would have done that. My target code does not use those pins so the idea that my code was driving high against a low master doesn't seem to be the issue.
Any thoughts on non responding ISP interfaces would be appreciated.
Thanks in advance