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  VS Arduino › Visual Micro › Installation & Troubleshooting › Problems uploading to Tiny85 with TinyISP
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Hot Topic (More than 8 Replies) Problems uploading to Tiny85 with TinyISP (Read 9408 times)
MarvinMartian
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Problems uploading to Tiny85 with TinyISP
Mar 7th, 2013 at 8:33pm
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I'm trying to upload to an Attiny85 using the TinyISP programmer but I'm getting the following error:

avrdude: verification error, first mismatch at byte 0x00c0
         0xb0 != 0x68
avrdude: verification error; content mismatch

if I run avrdude directly with the following command line, it programs successfully

avrdude -c usbtiny -p attiny85 -U flash:w:Tiny85Test.hex

Is there any way I can see the avrdude command that VM is generating for the upload?

I have the board set to 'ATtiny85 @ 8 MHz  (internal oscillator; BOD disabled)'

Cheers
  
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Tim@Visual Micro
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Re: Problems uploading to Tiny85 with TinyISP
Reply #1 - Mar 7th, 2013 at 9:08pm
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Verbose upload is on the list for the next release

In the meantime you can use the .exe in the zip below to show you the args.

vm_exe_args_explorer.zip

You don't need to re-start VS to use the exe. Rename avrdude.exe to something else then rename the exe to avrdude.exe. Run anything that calls avrdude.exe such as vm upload and a dialog will appear with the args that were passed. Then nothing will happen because the exe doesn't do anything else.
  
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MarvinMartian
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Re: Problems uploading to Tiny85 with TinyISP
Reply #2 - Mar 8th, 2013 at 7:26am
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Thanks Tim

I've pulled out the command params - not have to go through them and see what's causing the problem...
  
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MarvinMartian
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Re: Problems uploading to Tiny85 with TinyISP
Reply #3 - Mar 8th, 2013 at 7:16pm
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Ok this is wierd - the command line has two -q for "really quiet" mode - if I remove both, then verification succeeds. If I add one or 2 back in, verification fails.....

On a separate note - should the fused be being programmed in this upload too? Because there is no command to do that...
  
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Tim@Visual Micro
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Re: Problems uploading to Tiny85 with TinyISP
Reply #4 - Mar 8th, 2013 at 7:39pm
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Please run the upload from the arduino ide so that we can see the params. 

Someone reported the fuses not being set for the Arduino ISP so based on your test I will update the uploader accordingly.

Thanks very much.
  
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MarvinMartian
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Re: Problems uploading to Tiny85 with TinyISP
Reply #5 - Mar 8th, 2013 at 8:14pm
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I get the same error through the Arduino ide:

Binary sketch size: 754 bytes (of a 8,192 byte maximum)
avrdude: verification error, first mismatch at byte 0x0080
         0x80 != 0x58
avrdude: verification error; content mismatch

How do I get to see the command line from here?

  
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Tim@Visual Micro
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Re: Problems uploading to Tiny85 with TinyISP
Reply #6 - Mar 8th, 2013 at 8:50pm
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It runs the same avrdude.exe as vm so you could use the exe from the zip BUT in arduino you can select "File>Preferences" and switch on Verbose Upload. This will show the command line in the Arduino Ide build window.
  
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Tim@Visual Micro
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Re: Problems uploading to Tiny85 with TinyISP
Reply #7 - Mar 8th, 2013 at 8:51pm
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ps: if you get the same error in the arduino ide then you can also ask questions on the arduino.cc forum. You might get a more intelligent response Smiley
  
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MarvinMartian
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Re: Problems uploading to Tiny85 with TinyISP
Reply #8 - Mar 9th, 2013 at 9:28am
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Rats! Switching on the verbose logging by definition switches off the quiet logging, and that makes the verification succeed!

But this definitely looks like an avrdude issue so I will persue elsewhere... thanks for your help so far.
  
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Tim@Visual Micro
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Re: Problems uploading to Tiny85 with TinyISP
Reply #9 - Mar 9th, 2013 at 8:11pm
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Ok, will be keen to hear the solution thanks
  
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