Using 2 PWM outputs - Electronic Circuits Projects Diagrams Free

raj_ps · 11th February 2008, 07:15 PM

Hello all,

I'm using PIC16F883 to output two PWM outputs via CCp1 and CCp2 pins.
I use the same period for both of them. I convert the first analog signal into digital and output via CCP1 in the main loop. This one works.

Then, i use the External Interrupt function of RB0 pin to generate an interrupt. And in the ISR, i want to output a 50% dutycycle on CCP2 pin.
But i dont get any PWM output at CCP2. I've configured CCP2COn reg, TRIS, ANSEL, INTCON and OPTION registers.

Is there anything i'm missing here? I really appreciate your inputs.

Thanks,
Raj

bananasiong · 12th February 2008, 02:15 AM

Hi,
Can you show your code? It will be easier

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11th February 2008, 07:15 PM	(permalink)
raj_ps	Using 2 PWM outputs Hello all, I'm using PIC16F883 to output two PWM outputs via CCp1 and CCp2 pins. I use the same period for both of them. I convert the first analog signal into digital and output via CCP1 in the main loop. This one works. Then, i use the External Interrupt function of RB0 pin to generate an interrupt. And in the ISR, i want to output a 50% dutycycle on CCP2 pin. But i dont get any PWM output at CCP2. I've configured CCP2COn reg, TRIS, ANSEL, INTCON and OPTION registers. Is there anything i'm missing here? I really appreciate your inputs. Thanks, Raj

12th February 2008, 02:15 AM	(permalink)
bananasiong	Hi, Can you show your code? It will be easier __________________ Superman returns..