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 effi
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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Jan,
> I think some where in amForth TCNT1 is overwritten!
Indeed. Every time timer1 overflows.
> When I change some of the preload value by hand no change is seeing.
> Frequency is staying at 15,2 Hz.
Yes. You are seeing a frequency of
1600 divided by 8 (for the prescaler)
Hi,
I have taken the TIMER_1 example, and make some small change.
Instead of the timer1.tick I toggle pin-7 of the Arduino.
With the values as in the listing I measure a frequency of 15,2 Hz with my
scoop.
When I change some of the preload value by hand no change is seeing.
Frequency is staying
> Is it correct that I can use this timer with his interrupts freely
> without any harm/restrictions for Amforth?
Yes, that's correct.
Matthias
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Hi,
I have take a look into the excellent work of Erich Walde “Clock Works”.
When I walk trough the code I see that Timer1 is used freely.
Is it correct that I can use this timer with his interrupts freely without any
harm/restrictions for Amforth?
Cheers,
Jan
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