> My leaving question is the word “f_cpu” in the code of Timer1.frt.
> When I execute it I get two values on the stack.
It's the current clock the controller is running at.
It's a double cell number, since the 16bit controllers
run too fast to keep this number in a single cell.
Matthias
___
Hi,
Thanks all for the suggestions. After reload the timer after every interrupt it
is working great.
My leaving question is the word “f_cpu” in the code of Timer1.frt. When I
execute it I get two values on the stack.
What is the meaning of this two values?
Cheers,
Jan
Op 3 nov. 2018,
Hi Jan
I suggest that the ISR has to toggle the pin and re-load the timer1 counter.
>From memory timer1 counts upwards and once it overflows it just keeps
counting up from zero unless you re-load it.
Regards
Richard
On 11/3/18, Jan Kromhout wrote:
> Hi,
>
> I have taken the TIMER_1 example, an
> I think some where in amForth TCNT1 is overwritten!
I can assure you, that there is no code in plain amforth
that overwrites your settings. It's either your code or
the hardware itself.
Matthias
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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)
> 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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Amforth-devel@lists.sourceforge.net
https://li
There is an SVN link off the amforth sourceforge page. As far as I know,
this is where the source for the shipped libraries resides.
On Mon, Oct 15, 2018, 08:37 Jan Kromhout via Amforth-devel <
amforth-devel@lists.sourceforge.net> wrote:
> Hello,
>
> It’s a while ago that I implemented AmForth (4
Am Samstag, den 05.03.2016, 18:53 -0800 schrieb James Bowman:
> Revised version of common/lib/anew.frt is below.
> Changes:
> - use new word FIND-XT
> - fix stack action for word-not-found case
> - add dependency on marker.frt for MARKER
All applied, thank you James!
Modification: #require is a a
Revised version of common/lib/anew.frt is below.
Changes:
- use new word FIND-XT
- fix stack action for word-not-found case
- add dependency on marker.frt for MARKER
\ POSSIBLY ( "name" -- )
\ Execute _name_ if it exists; otherwise, do nothing.
\ Useful implementation factor of `ANEW`.
Am 10.05.2012 14:18, schrieb Jan Kromhout:
> Hello,
>
> I'm looking in some code to look how the analog write is working.
> I see commands like sbi(…,…) and chi(…,…)
SBI means Set Bit in Io-register. CBI in analogy Clear Bit
in Io register.
The atmegas use a 5bit address range for some IO regist
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