Nothing but trouble with AVR-ISP-MKII on latest OS X

Started by lanerebel, May 30, 2015, 08:31:05 AM

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I recently purchased an Olimex AVR-ISP-MKII from Mouser to program an ATMega 644P for a project I'm working on. I'm running on the latest OS X (10.10.3 at the time of this post) and flashing the chip with avrdude. The first hurdle was the bug mentioned here Turns out that a year later it still is not fixed. Therefore I'm using avrdude 5.11 instead of 6.0.1. I have the updated firmware on my AVR-ISP-MKII so that I can use avrdude.

The basic output I'm receiving from avrdude is as follows:

⊗ /src/avrisp-testing/testbed/bin/avrdude -c avrispmkii -p m644p -P usb

avrdude: stk500v2_command(): command failed
avrdude: stk500v2_program_enable(): bad AVRISPmkII connection status: Unknown status 0x00
avrdude: initialization failed, rc=-1
         Double check connections and try again, or use -F to override
         this check.

avrdude done.  Thank you.

For the super verbose output see here

To rule out problems with my project, I'm testing this on an Arduino Uno R3 (ATMega 328P). I have verified the pin outs of both the 10-pin ICSP and the ICSP on the Arduino board, and everything seems to be correct. The LEDs on the board light up, indicating I have power. Everything seems to be setup correctly yet avrdude refuses to connect to any MCUs through the programmer. At this point I can't see any other answer than a problem with my computer or my programmer. I have no clue what to try next, though. Any thoughts on where I can go next?