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Author Topic: Error: avrdude: verification error...  (Read 1560 times)
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I get this error for every sketch I try to upload:
Code:
Binary sketch size: xxx bytes (of a 30720 byte maximum)

avrdude: verification error, first mismatch at byte 0x0000
         0x0c != 0xff
avrdude: verification error; content mismatch

The TX/RX lights blink so its clearly sending data to the chip but no sketch works.

My Arduino is a 328 Duemilanove.
This is a new problem, I have been using my Arduino for over a year now with no problems.

Did my bootloader die? Or the whole chip altogether?

Any advice is appreciated.
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It almost sounds like you have the wrong board selected. Very that the the board selection
is correct.

(* jcl *)

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Yes that was one of my suspicions as well but the board is set correctly to "Arduino Duemilanove or Nano w/ATmega328" the first one in the list.

I also tried reinstalling FTDI drivers but I am still getting the same error.
« Last Edit: March 11, 2010, 04:06:31 pm by jamieriddles » Logged

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Bump

Anyone?
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In your preferences file try changing the upload.verbose to "true" (no quotes).
Maybe there will be some additional information that will help.
I just found this option today when troubleshooting an avrdude problem.

(* jcl *)

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Here's what I got from the verbose mode:

http://stashbox.org/823505/textupload.txt

I can't really see anything useful but hopefully you can.
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Is that all of the messages? When I ran verbose I was able to
see the avrdude command line (which is how I solved my
Makefile issue). It would nice to see the command line
switchs that are used.

(* jcl *)
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Yep that is all I get. No command line.
I am using version 18. The text I posted shows up in the bottom black box in the Arduino software. I had to add the verbose thing inside preferences.txt because it was not originally there. Perhaps that is relevant.
« Last Edit: March 14, 2010, 09:35:33 pm by jamieriddles » Logged

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I wonder if the command line scrolls out of the buffer?
On my Linux box I read everything from the terminal
window.

I am on 0017. In my preferences.txt file there was a line
Code:
upload.verbose=false
which I changed to
Code:
upload.verbose=true

The only thing I was going to check for is the baud rate. Sometimes
slowing the baud rate can help. In my Makefile I am using an
upload rate of 38400.

(* jcl *)
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I tried lowest baud (300) and some other random ones as well.
When I searched "upload.verbose" on Google, I noticed a similar option: build.verbose.

When I added the setting "build.verbose=true" I got this:
http://stashbox.org/823519/textupload.txt
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build.verbose gives you all the output of the compiler.
Unfortunately the issue is with the upload which requires upload.verbose.

(* jcl *)
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I see.
When I saw the command line switches I thought it might be worth posting.
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I am having practicaly the same problmes. When I try yo upload a sketch (any sketch) I get this:
Code:
avrdude: verification error, first mismatch at byte 0x0012
         0x2f != 0x31
avrdude: verification error; content mismatch

The Tx and Rx LEDs blink - standard indication of an upload. But after the upload is finished - I get that error. And the boad still runs the skectch that was uploaded before I got this error. I tryed unpluging the board, restarting Arduino IDE, selecting the correct board again... But nothing helps.
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