I just replaced the atmega2560 on my Mega 2560 and i am having trouble programming the bootloader.
I am using a known good UNO board as my ISP. So far no good. Is this method of programming known to be problematic?
Is there a kinda-low cost programmer out there that is pretty robust for these micros?
I would use OptiLoader by WestfW, just add a new image to the end of the file for the 2560 with the relevant fusebits and HEX.
Sounds like a great option. The readme does not mention the ATMEGA2560, it does however mention some other procs.
Do you know for sure it will work on the MEGA2560??
Thanks!!
-Stephen
It does not have a preset for the 2560, and will not work out of the box, but all you need to do is add a new entry to the data section at the end of the sketch with the relevant settings it should work for any ATmega that supports serial programming. It's the most trouble free method of burning a bootloader that I know of.
gruv2ths:
I just replaced the atmega2560 on my Mega 2560 and i am having trouble programming the bootloader.
I am using a known good UNO board as my ISP. So far no good. Is this method of programming known to be problematic?Is there a kinda-low cost programmer out there that is pretty robust for these micros?
What trouble are you having? Have you tried a pull resistor on the reset line of the Uno, or a 10uF cap to GND?
Texy