AVR-Chat

I need to generate PWM on PB0 and PB5 of a Mega8.  Yes, I know there
are dedicated hardware PWMs on this chip, but that's not what is
required.  Has anyone had experience bit-banging PWM?  

Mark Weston

--- In AVR-Chat@yahoogroups.com, "weston54" <weston54@y...> wrote:
> 
> I need to generate PWM on PB0 and PB5 of a Mega8.  Yes, I know there
> are dedicated hardware PWMs on this chip, but that's not what is
> required.  Has anyone had experience bit-banging PWM?  

Do you need a true PWM where the duty cycle of each output period is 
identical or do you just need a waveform that implments the desired 
duty cycle on average?

If the latter case is of interest, it is simple to implement.

I need the PWM to alter the speed of two pager motors on a Mega8

Mark