how can I use interrupt and PWM on same port

MayDay · Joined: 31 Aug 2006 Posts: 7 Location: Romania

Hello

Please help me, how can I use interrupt and PWM on port B. For example I use PIC 16f88 and on pin RB3 I want to use PWM and on pin RB4 interrupts for an IR senzor. How can I do this. I use separatly PWM and Interrupts and works, but both doesn't.Pls hlep me.

Thanks

Ttelmah · Guest

You can't.
You need to use a seperate interrupt (RB0). The interrupt on the 'high' pins of port RB, is a 'port changed' interrupt. It triggers, whenever the state of a pin changes from the currently latched value. Unfortunately using a pin as a peripheral output, doesn't override this (hardware stupidity in the chip).

Best Wishes