DT Instant Interrupts

[Darrel Taylor]

That's a good one to learn.
You'll need some variation of it in almost every program you write.

Also, Since the TMR0_INT handler is only toggling a pin, it's not using any PBP system variables.

You can change the TMR0_INT's "Type" to ASM.
Then it won't be saving all the system variables when it doesn't need to. Time is critical with that many simultaneous PWM's.

Then you can remove the ReEnterPBP-18.bas include file, which will save some RAM and Code space.

[krohtech]

Thanks again Darrel,

I just fully tested the SPWM_INT running 16 channels @ 100Hz 0-100 resolution. I tested each channel with a 7 amp led cluster (Agilight Brightstrip see below) of typical sign led strips powered through a MOSFET. This worked great. I am able to dim all the way down to 1% without any flicker and smoothly fade up to 100% with no flicker or noticeable stair stepping effect. This is smoother than when I used the older multi SPWM program.

I really appreciate you help

http://www.agilight.com/brightstrip/index.htm

[Darrel Taylor]

Great Testimonial Kurt!

Mind if I use it on my website?
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[krohtech]

Great Testimonial Kurt!

Mind if I use it on my website?
<br>

Darrel,

Feel free to use my testimonial in any way you see fit.

[Darrel Taylor]

Thanks Kurt!

Ioannis,

I've mentioned it a couple times here in the forum, but I just spent about an hour trying to find them, and failed.

I really should write some more pages for the website.

Anyone got a Cloning Machine? I need another Me.

[krohtech]

Hay Darrel,

In the DT_INTS-14 (SPWM_INT - Multiple Software PWM) It says:

DutyVars   VAR BYTE[3]              ; DutyCycle Variables
  DutyVar1 VAR DutyVars[0]          ; group them in an array for easy access
  DutyVar2 VAR DutyVars[1]          ; with FOR loops etc.
  DutyVar3 VAR DutyVars[2]

I do not know how to use arrays or how it can benefit in loops. The way I am doing it now is very cumbersome and code intensive. I have searched the forum and RTFM but I can't get my head around how this concept. Can anyone point me in the correct direction.

[Darrel Taylor]

If you wanted to set all LED's to the same brightness, you could ...

LoopCount  VAR BYTE

FOR LoopCount = 0 to 15         ; 16 channels
    DutyVars(LoopCount) = 50    ; 50% (0-100)
NEXT LoopCount

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[Ioannis]

...
You can change the TMR0_INT's "Type" to ASM.
Then it won't be saving all the system variables when it doesn't need to. Time is critical with that many simultaneous PWM's.

Then you can remove the ReEnterPBP-18.bas include file, which will save some RAM and Code space.

I may missed that little but critical details. Are these described somewhere Darrel?

And may be others too that I am not aware off...

Thanks,
Ioannis