for guidance on diagnostics or addtional tests to determine AVR programmer functionality. SpokePOV board LEDs change state during
communication attempts, but 'fail to communicate' is always the result.
FIRST: USBtinyISP froma kit (arrived with SpokePOV)
SECOND: Mac OSX 10.10.2, Macbook PRo, USB port
THIRD: SpokePOV v1.4, avrdude 6.0.1
FOURTH: USBtinyISP never worked to communicate with target. Solder joints have been inspected and
rewetted additonal 1-2 times. Test Port initially failed. Now it passes every time.
USBtinyISP AVR
R4, R7 installed
Green LED on, Red LED on during communication
10-pin cable passes continuity check
Test Port tests
JP3 in JP3 out
Pin 1 5.15/0.0 0.23/1.4
Pin 5 5.15/0.0 0.2/0.2
Pin 7 5.15/0.0 1.8/0.1
Passes test with JP3 installed
FIFTH: Post screenshots (NOT copy&paste) of what is happening
SIXTH: see attachments
Observed behavior:
Removed JP3 from programmer. Installed fresh batteries into SpokePOV board.
SpokePOV board passes startup test (LEDs), Reset OK. LED #6 (counting from ATtiny2313) is ON.
Terminal communication over USB to programmer
No target attached (no JMP)
[qajaq:~/Dropbox/adafruit/spokepov] steve% avrdude -c usbtiny -p m8
avrdude: initialization failed, rc=-1
Double check connections and try again, or use -F to override
this check.
avrdude done. Thank you.
Target attached (SpokePOV ATtiny2313V-10PU, no JMP, batteries in, LEDs on)
[qajaq:~/Dropbox/adafruit/spokepov] steve% avrdude -c usbtiny -p t2313
avrdude: initialization failed, rc=-1
Double check connections and try again, or use -F to override
this check.
avrdude done. Thank you.
SpokePOV Soft Connect
Comm delay varied from 4000 to 10000
USB PORT
On SpokePOV board LED #7 (counting from ATtiny2313) turns OFF and LED #3 turns ON during Connect attempt
Resets to LED #7 when "avrdude -c usbtiny -p t2313" is issued
Same for 2 other SpokePOV boards
- USBtinyISP top
- FullSizeRender.jpg (870.25 KiB) Viewed 821 times
- USBtinyISP bottom
- FullSizeRender-1.jpg (985.39 KiB) Viewed 821 times
