PWM & Timer2

bananasiong

New Member

• Feb 26, 2008

• #1

Just a quick one, am I right that the PWM duty cycle will be updated after the next cycle of Timer2 get started if I modify CCPRxH:CCPRxL before Timer2 match PR2? So anyhow I have to waste one cycle of Timer2 if any modification on the duty cycle.

Thanks

 

Mike - K8LH

Well-Known Member

• Feb 26, 2008

• #2

Yes, the duty cycle takes effect at the next PR2 match. Think of it as staying one PWM cycle ahead.

 

bananasiong

New Member

• Feb 27, 2008

• #3

Thanks. If the duty cycle is modified, won't the PWM of the current cycle get affected?

 

blueroomelectronics

Well-Known Member

• Feb 27, 2008

• #4

Nope, it's buffered. Nice glitchless PWM on the PICs.

 

bananasiong

New Member

• Feb 27, 2008

• #5

OIC, thanks for that