Hi, when trying to verify HEX file during programming Arduino with USBASP AVR programmer I've got an error message:
avrdude.exe: verification error, first mismatch at byte 0x0002 0x2d != 0x29
avrdude.exe: verification error; content mismatch
What can be wrong with my HEX file? Please help
What can be wrong with my HEX file?
Just about anything. But it's more likely that the hex file is for some other kind of Arduino than the one you are trying to put it on.
I was trying to program Arduino Pro Mini - Atmega328P - in CodeVision AVR IDE.
Even new project - without any additional features provides this error.
I compile project into hex file and then try to load it into Pro Mini with separate programmer soft - I have two programs AVRDUDEPROG & SinaProg. Result is the same in both these programs - I've gt this error during hex file verification.
What interesting - I've got another hex file with good code - this file can be verified and uploaded into Pro Mini with no errors.
So I think maybe I have some bad settings in CodeVision AVR IDE? This IDE produces error even right after installation....
Problem was that I did not correctly understand the function of "verify" button in the program for filling into the chip through the programmer. It turned out that the verify button does not check the hex file for the correctness of the "assembly" (as I thought), but on the correspondence of the hex file to the code that is already in the chip ....