I've been trying to burn a bootloader set to run @8MHZ and 1.8v Brown out to 1.8v.
What happens is.. doesn't matter what I do.. it always burn the same bootloader..
OptiLoader Bootstrap programmer. 2011 by Bill Westfield (WestfW) Target power on! ... Starting Program Mode [OK] Reading signature:950F Searching for image... Found "optiboot_atmega328.hex" for atmega328P Start address at 7E00 Total bytes read: 502 Setting fuses for programming Lock: 3F FFE000 Low: FF FFA000 High: DE FFA800 Ext: 5 FFA400 Programming bootloader: 512 bytes at 0x3F00 Commit Page: 3F00:3F00 Commit Page: 3F40:3F40 Commit Page: 3F80:3F80 Commit Page: 3FC0:3FC0 Restoring normal fuses Lock: 2F FFE000 Target power OFF! Type 'G' or hit RESET for next chip
You can see the fuse settings..
Setting fuses for programming Lock: 3F FFE000 Low: FF FFA000 High: DE FFA800 Ext: 5 FFA400
I have tryed to change from the optiboot values
from: .low_fuses=0xff .bootloader.high_fuses=0xde .bootloader.extended_fuses=0x05
.bootloader.low_fuses=0xE2 .bootloader.high_fuses=0xD8 .bootloader.extended_fuses=0x06
Maybe I'm doing something at a wrong way.
I can burn the bootloader and sketches using optiboot but can't change the fiose settings to run under 8Mhz and internal oscilator.
Can anybody help?
tks a lot