Jan,
If you want to see different frequencies using your code I think you
will need to reset TCNT1 to the value you want in your overflow isr.
: timer1.isr
\ toggle output PD7
togglePD7
\ reset TCNT1
your-value TCNT1 !
;
However, using CTC mode would be more accurate and efficient. Also if
you are not too fussed on your multiplexing frequency then a different
choice of timer and prescaler might make it easier. Your C code
mentioned 200Hz I think. Have a look at timer0 (8 bit) with a /256
prescaler and an overflow isr.
Best wishes,
Tristan
On 02Nov18 21:33, Jan Kromhout wrote:
> Thanks Tristian,
>
> Yes, I’m looking for something i can use for multplexing 7-segment displays.
> But still strange I can’t use this timer freely.
> How could we figger out where this oceurs?
>
> But still thanks again for your helpfull remarks.
>
> Cheers,
>
> Jan
>
>
> Verstuurd vanaf mijn iPad
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