atmega88 fuses problem

Other Hardware 3rd Party Boards
1

dear all,

I have the problem with the atmega88P after I burned the bootloader into it, but I do not know what fuses the bootloader burn into my atmega88P. After I successfully burn the bootloader and upload the "led blinking example". It works fine and blinking with same frequency in the example code. However, I measure its external 16Mhz crystal with oscilloscope and I did not see it running. I guess the atmega88P uses the internal clock.
Anybody knows what's wrong and how to fix the problem. I appreciate your input very much. By the way, I need to run the external crystal 16Mhz clock for my project.

2

Attach a copy of your boards.txt file located in c:\Program files\Arduino\Hardware

3

hi raschemmel,

I have the boards.txt for atmega88 in my hardware when I burned the bootloader into it. Below is the boards.txt file,
could you please tell me what parameters or fuses I need to change in order to achieve the external clock. Thanks in advance.

atmega88 boards.txt file:

##############################################################

avr88p.name=ATmega88P / Int. 8MHz
avr88p.upload.using=arduino:arduinoisp
avr88p.upload.maximum_size=8192

avr88p.bootloader.low_fuses=0xe2
avr88p.bootloader.high_fuses=0xdf
avr88p.bootloader.extended_fuses=0x07
avr88p.bootloader.path=optiboot
avr88p.bootloader.file=88p-8.hex
avr88p.bootloader.unlock_bits=0x3F
avr88p.bootloader.lock_bits=0x3F

avr88p.build.mcu=atmega88p
avr88p.build.f_cpu=8000000L
avr88p.build.core=atmega88p
avr88p.build.variant=standard

##############################################################
4

Ask Crossroads.