sketch upload issues

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Joined: Wed Jan 30, 2019 4:00 pm

sketch upload issues

Post by alexsarasitis » Wed Jan 30, 2019 4:09 pm

Hello, just got my new controlllino mini and started experimenting.
I got:
"avrdude: verification error; content mismatch" when trying to upload my sketch.
Please advice.
After many trials it worked for a few uploads and then it stoped again. Also, I was able to reconnect when taking out controllinos power supply, but this could be a coincident.

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Joined: Tue Dec 18, 2018 3:44 pm

Re: sketch upload issues

Post by Lukas » Thu Jan 31, 2019 12:24 pm


it seems that you have some interference at the serial line between USB/UART converter MCU and the main MCU.

Do you have any wires connected to the X1 pinheader, please? Especially to lines TXD, RXD or /RESET?

We have already investigated some issues with programming, but these were "permanent" and caused by some corrupted sketch uploaded in the device.
Please see our FAQ here ... ibrary#faq

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