Today I tried to upload the Arduino bootloader onto my self made arduino-compatible-mega-board. I used my present arduino to upload it. After 4minutes of uploading I got an error: “Error while burning bootloader, avrdude.exe: verification error, first mismatch at byte 0x1e000”.
I got the same error after 3 other uploading attempts. However, I tried to find something in the avrdude output. For me it seems like the communication with the ATMEGA2560 is working, avrdude sends the hexfile. But at the data-verification-procedure, the uC seems to send only FFs.
An other hint: The LED on pin 13 “doubleblinks” recurrently after uploading.
The full AVRdude Output is in the attachments.
Anybody knows whats going on?
Thanks in advance, Andy
AVRdude_Output.txt (2.04 MB)