changing device signature in avrdude

Question

I am trying to burn bootloaders to Atmega2560V and when I hit burn bootloaders it shows me this error

avrdude: Device signature = 0x1e9803 avrdude: Expected signature for ATmega2560 is 1E 98 01

I know this device should have 0x1e9801, But I don't know why it's showing me this error.

I tried my luck by starting threads at AVRFREAKS but no joy.

One of my friend told to try changing the device signature in the avrdude from 0x1e9801 to 0x1e9803 for a temporary try.

How can I do that.? please please please anyone help.

Thanks

Answer 1

You should have, somewhere in your hard drive, a file named avrdude.conf. My copy of the file has the following lines:

#------------------------------------------------------------
# ATmega2560
#------------------------------------------------------------
part
 id = "m2560";
 desc = "ATmega2560";
 signature = 0x1e 0x98 0x01;
 ...

Try changing the line with signature. Alternatively, you could make a new entry for your MCU like this:

#------------------------------------------------------------
# ATmega2560V
#------------------------------------------------------------
# Identical to ATmega2560 but for the signature
part parent "m2560"
 id = "m2560v";
 desc = "ATmega2560V";
 signature = 0x1e 0x98 0x03;