Does anyone succeed programming ATMega169 Butterfly devices with High-Voltage Parallel Programming interface ?
I was developing an application on Butterfly. I programmed the devices with AvrProg with RS232 interface. Then I killed them one by one on programming. One lock bit has been set by the bootloader and I each programming attempt results verification error expecting 0x940c.
The only chance left to recover the Butterflies I own is to program them with the STK500 in HVPP mode.
I modified the BF hardware (move two 0Ohm resistors). I built a pretty parallel cable described in the "AVR Butterfly Evaluation Kit" manual. I set the ISP freq as low as possible.
I always receive error when reading "signature bytes". "Entering Programming mode : FAILED!"
I probably missed something.
Any idea ?