Problem w/ Sketch Upload

[roacher]

After creating a .h file with a wave table, in python, my sketch compiles with no errors in the arduino environment, but when I upload to the arduino board I get an error:

Binary sketch size: 19,340 bytes (of a 258,048 byte maximum)
avrdude: stk500v2_ReceiveMessage(): timeout
avrdude: verification error, first mismatch at byte 0x4135
0x01 != 0xff
avrdude: verification error; content mismatch

Have you seen this before, or know what could be going on?
Thanks,

r

[sensorium]

Hi roacher,
this might be a dumb answer first up, but have you tried unplugging your usb, restarting arduino, etc.?
Otherwise, do you want to post the code, including the table? Paste it here, or send it to faveflave@gmail.com.
Tim

[roacher]

Thanks for responding so quickly. I have tried unplugging and restarting.
Im attempting to run this on the MEGA 2560. Very quickly, I uploaded it
to an UNO and there were no errors- I didn't have time to test it with an
amp and speaker hooked up tho.

Attached are the files: arduino w/ mozzi code & and the wavetable.

Thanks!

On Thu, Apr 25, 2013 at 10:00 PM, Mr Sensorium notifications@github.comwrote:

Hi roacher,
this might be a dumb answer first up, but have you tried unplugging your
usb, restarting arduino, etc.?
Otherwise, do you want to post the code, including the table? Paste it
here, or send it to faveflave@gmail.com.
Tim

—
Reply to this email directly or view it on GitHubhttps://github.com//issues/8#issuecomment-17054446
.

[sensorium]

Hey there,
I didn't see the files attached - maybe it doesn't work on github. But the MEGA 2560 is a clue.
Someone identified a bug at upload time on the MEGA 2560, where if the compiler sees 3 !!! exclamation marks in a row (or 33, 33, 33 in decimal) it enters serial mode and the board freezes.
I thought I changed the python scripts to dither any occurence of 33, 33, 33, but if you wrote your own or used one I didn't check, this might be worth looking at. Feel free to email the code if that's not the problem.
Tim

[tfry-git]

This report has not seen any activity in a long time, and is very unlikely to be specific to Mozzi. So I'll close it.

For reference, in case it is the tripple exclamation mark problem, the relevant upstream ticket is here: https://code.google.com/archive/p/arduino/issues/392 . Solution is to upload an updated firmware to the 2560.