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Well,
With the example given, Sure!
But with 16F's, if it gets more complicated, you might have problems. The problem is that when you have more than 1 interrupt source, the HSERIN will stop the others from happening while it waits for the data to come in. But if you only intend to use the one interrupt from the USART. No Problem.
If you were using an 18F with multiple INT sources, then the HSERIN could be in a Low Priority Interrupt without any problems at all.
<br>
DT
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Hi Darrel,
Great you decide to spent some weekend time on it! I'll hope you did enjoy your weekend anyway..
I will check out the new Multi_SPWM version ASAP and post the results.
Tnx a lot for your kind help.
Regards,
Willem
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Thank you for fast reply!
And YES, YES, YES!!!
It works! You are my rescuer!
Thank You!
Last edited by Baddzso; - 3rd October 2006 at 11:46.
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Software PWM for DT_INTS-xx
Dear Darrel,
I just would like to let you know the combined DT_INTS-14 and SPWM_INT working fine!!
I control 5 Hi power LED’s Using 5 PWM signals (100Herz, 200 step), LED selecting is done by 3 address lines and the actual control by a pulsed STEP and a UP/DOWN level input.
STEP is causing the INT external interrupt doing the actual PWM change (controlling DutyVar1 to DutyVar5)
Whenever I change a PWM value, it’s stored as the new default in EEprom (using WRITE command with DISABLE INTERRUPT before and ENABLE INTERRUPT after, working OK too).
If you like to have more info on both hardware and software, let me know.
Thank you for your help!
Regards,
Willem
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Excellent!
That's great Willem. I'd love to see what you've done with it. Maybe you could post it in the "Code Examples" forum. Better as a new thread. This thread is getting so big it would only get lost in the mess.
Or I can put it on the website, as an example for SPWM_INT if you'd like. Hopefully, with a picture of the project too?
DT
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Hello Darrel,
Is there any way i can implement you instant interrupt routines on PICs which do not have the TMR0 interrupt ( like the PIC16C54A) ???
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No,
The 16C54A doesn't have any interrupts.
They only have 512 words of program space, 25 bytes of RAM, and a 2-level hardware stack.
At 4 dollars each, I can't imagine why anyone would ever use them.
<br>
DT
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