Fan regulator - Any advise

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1. Get triggered by the external interrupt pin on a mains zero crossing
2. When this happens, the TMR0 timer is loaded with the delay time to fire the triac. Think of this as a phase lag triggering like the triac dimmer you use in your lamps.
3. The 67 and 155 are limiting values for the delay time, so when you increase the value it should not increase beyond 155 and when you decrease it should not go below 67. If these conditions are not met, you will have weird behaviour on the triac dimmer
4. The load_value is the delay time I talk of here. The +/-8 is the step for the dimmer value

Thanks Jason, my name is Damien. Your explanation has showed me light at the end of a looong tunnel. Few questions have risen again:

1) Does this code wait for any command to start the light/fan or as soon as the circuit is connected it fires the triac?
2) What is "Nop, Nop..." & why it is repeated many times?

Thanks again (Getting there)

[Jerson]

Hi Damien

The code starts right away. It uses the DIM_UP and DIM_DOWN buttons to change the dimming value.
the NOP commands are repeated as a means of attaining a small delay time between the GPIO.0 on and GPIO.0 off commands. Meaning, make a tiny pulse to fire the triac.

A tiny warning, the PBPro compiler doesn't support the CONTEXT RESTORE command. You should also read up on Darrel Taylor's instant interrupts to get this working smoothly under PBPro. The interrupts supported by PBPro are too primitive to achieve anything time critical.

Alain, I think the circuit should be good for a ceiling fan too. The triac rating should help to decide that.

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[QUOTE=Jerson;77773]
A tiny warning, the PBPro compiler doesn't support the CONTEXT RESTORE command. You should also read up on Darrel Taylor's instant interrupts to get this working smoothly under PBPro. The interrupts supported by PBPro are too primitive to achieve anything time critical.
[QUOTE]

Thanks Jerson (sorry to call you Jason before), where can I read about Darrel Taylor's instant interrupts? & can you advise me of what will be the replacement code for CONTEXT RESTORE (what does it do?))

Thanks

P.S: I know that it may be too much to ask, but can someone please make important corrections to this code according to PBPro, I think I will be able to adjust the rest according to my need (atleast I hope)

[Acetronics2]

Hi,

Looking at this interrupt stubb ... it seems translating it into pure ASM interrupt is fairly easy ... as all commands have their straight asm equivalent !!!

BTW ... I do not see DT Interrupts fitting into a '629 ...

Alain

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BTW ... I do not see DT Interrupts fitting into a '629 ...

I have 12F635 as well, if that helps

[Jerson]

Am I missing something? I looked up microchip site for 16F629 ... nothing. Is it a 639 and a 635 you talk about?

As to whether DT instant interrupts fits in a 628 or equivalent, I'm not sure, but I've used assembly language interrupts on a 628. It's very easy once you know.

[Acetronics2]

Hi, Jerson

You should have a strong coffee ...

DEVICE 12F629
CONFIG INTRC_OSC_NOCLKOUT, WDT_OFF, PWRTE_ON, BODEN_OFF, CP_OFF, MCLRE_OFF
...
...

lol ...

For DT interrupts ... the problem is the RAM size, not the Program size ...

So, a 12Fxxx with enough RAM ( 12F683 i.e. ) is Ok

It won't fit into a 16F84 nor ...

Alain