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PWM and 16F88 Issue

 
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ninjanwong



Joined: 12 Jul 2007
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PWM and 16F88 Issue
PostPosted: Fri Jul 13, 2007 12:00 am     Reply with quote
I have a strange issue that's driving me nuts!

I'm using a PIC16F88 with and LED connected to B3 which I have set to PWM. I can verify functionality of this pin via o-scope. I have an input that is pulled high on B0 and ever since I enabled the PWM on B3, I get noise on B0! Is this because PWM can be configured to either B3 or B0? My Fuse setting is CCPB3. Ideally I had an optical detector on B0, but even disconnected I'm getting noise.
PCM programmer



Joined: 06 Sep 2003
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PostPosted: Fri Jul 13, 2007 12:07 am     Reply with quote
Because pin B3 is also the PGM pin, I have to ask this question:

Do you have the NOLVP fuse set ? If not, you need to set it.
Add it to your #fuses statement.
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