Can somebody give me a pointer to how to set the timer 1 pwm to 10 bit resolution.
I have been looking at the atmega168 datasheet but there is too much info to take in all at once. :-?
see table 15-4 on page 133. You want to
TCCR1A |= (1<<WGM11) | (1<<WGM10);
TCCR1B |= (1<<WGM12);
TCCR1B &= ~(1<<WGM13);
which will set WGM1[3..0] to 0111 which according to table 15-4 is 10-bit fast pwm. If you want phase correct PWM, move WGM12 to the &= ~ line so it's set to zero instead of 1.
Thanks, I am just about getting a handle on what all the registers do now.
I found the following article helpful too. Quick and Dirty D to A on the AVR: A timer tutorial | Evil Mad Scientist Laboratories