fails verify

USB AVR Programmer and SPI interface. Adafruit's USBtinyISP.

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RifRaf
 
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fails verify

Post by RifRaf »

hi folks, have got a usbtinyisp and trying to use with laptop to flash various AVRs. So far it will identify the AVR ok, and can also erase the avr ok with avrdude -c usbtiny -p m32 -e .
When I try and flash the avr most of the time am getting an error similar to this when flashing but not always.

Writing | ################# | 33% 3.02sUSB write error: expected 128, got -5

however with an error or no error it always fails the verify and leaves the avr not working. any clues as to what to try appreciated. The mismatch happens at various locations.

avrdude: verifying ...
avrdude: verification error, first mismatch at byte 0x000f
0x02 != 0x0c
avrdude: verification error; content mismatch

avrdude: safemode: Fuses OK

avrdude done. Thank you.

adafruit
 
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Post by adafruit »

what OS are you using?

RifRaf
 
Posts: 2
Joined: Thu Jan 24, 2008 1:06 am

Post by RifRaf »

using xp pro sp2 . still no joy with that issue. maybe its to do with the buffer chip not being on version 1 ?

anyway good news is that i got the v2 kit version from this site, soldered it together last night and this morning have 3 avr projects working again.

used with one breadboarded avr and 2 other boards that i home brewed and all worked. will try fix the other programmer when i get time or make a v2 pcb for it

adafruit
 
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Joined: Thu Apr 06, 2006 4:21 pm

Post by adafruit »

hmm, was it a homebuilt or from a purchased kit?

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