AVR-Chat

Hi Tom,

Sorry, I am a C programmer, so wouldnt be much help with your assembly
language, just a few things you definately want to check:

1. Have you defined the PWM pin as output ? I did a search through
your code and didnt find a reference to the DDR register ?

2. Where did you set up timer 0 ? It looks like your using the output
compare of timer0 to do the PWM. Maybe if you tell me the hex values
you assign to the registers I can look through them and see what looks
out of place / wrong.

3. The PWM works fine, everyone here has probably used it many times,
it is almost certainly just a register set up incorrectly.

Cheers
Hein B
Auckland, New Zealand.

--- In AVR-Chat@yahoogroups.com, Thomas Keller <tjkeller1@...> wrote:
>
> 
> OK.   I may not have communicated my problem very well with the post 
> that included my source code listing.  The problem is almost certainly 
> somewhere in my setup of the PWM module.  Everything else seems t be 
> working just fine (the interrupt based timing loop is interrupting, the 
> table lookup on each interrupt is occuring as it should and returning 
> the correct values, etc.)
> So what I think I need is for someone knowledgeable with the PWM
modules 
> to scan my code and see if they can tell me what I am doing wrong,
as it 
> is almost 100% certain it is MY error, not a hardware issue.
> 
> 
> thanks in advance,
> 
> tom
>