RB0 Input pin configuration - Electronic Circuits Projects Diagrams Free

Suraj143 · 7th September 2007, 05:04 AM

Hi there!

My RB0 interrupt pin I configured as an input pin it’s an active low type.

It’s working well.

When I’m giving pulse from a 555 circuit to the RB0 do I have to configure it to rising edge or falling edge on the OPTION REG, INTEDG?

By default this bit has clear.

Thanks.

Sceadwian · 8th September 2007, 01:10 AM

You haven't supplied enough information.
If you're just trying to detect frequency it doesn't matter. If you're trying to detect duty cycle it's more complicated than just picking rising or falling edge.

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7th September 2007, 05:04 AM	(permalink)
Suraj143	RB0 Input pin configuration Hi there! My RB0 interrupt pin I configured as an input pin it’s an active low type. It’s working well. When I’m giving pulse from a 555 circuit to the RB0 do I have to configure it to rising edge or falling edge on the OPTION REG, INTEDG? By default this bit has clear. Thanks.

8th September 2007, 01:10 AM	(permalink)
Sceadwian	You haven't supplied enough information. If you're just trying to detect frequency it doesn't matter. If you're trying to detect duty cycle it's more complicated than just picking rising or falling edge. __________________ "Because I be what I be. I would tell you what you want to know if I could, mum, but I be a cat, and no cat anywhere ever gave anyone a straight answer, har har."