Failed to enter programming mode. ispEnterProgMode: Error status received:
Got 0xc0, expected 0x00 (Command has failed to execute on the tool)
I have Windows 10 with Atmel Studio 7, Pololu USB AVR Programmer 2.1 and new chip (L version 40 pin DIP while prototyping) on a wire wrap board (will try and include pics). I successfully programmed and executed one chip with my setup (so figure no wires are crossed) but now can't even read fuses on any of the 5 8515's that came in my minimum order. Always get the above error message. This is my first attempt at atmel/microchip but have done many others. I'm including a pic of the schematic with red traces over the parts I have wired. I know the power source looks funky; Digital Command Control (DCC) is both the power source and the communication protocol - and worked fine for the one success I got. My best guess with these symptoms is that I've somehow put Atmel Studio in the wrong state. I am using the default internal oscillator. I did successfully raise from 1MHz to 8MHz on the only successful programming (though it worked at both rates). I might have "bricked" some new chips changing fuses when I couldn't get it to work - but even a new chip with default fuse values doesn't work (and should). Studio 7 does reliably "connect" to the programmer but get the above error on all but the lowering of the frequency (to less than clock / 4).
Hope someone has ideas - have read and tried other "Got 0xco, expected 0x00" posts but get no joy.