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When I worked with PICs with different internal OSC frequencies, like PIC18F8722, I had similar problems with latching PORTs.Originally Posted by paul borgmeier
I am not sure if Mark is using Internal OSC but what he is having sounds like it.
Mark, what is your OSC setting?
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"If the Earth were a single state, Istanbul would be its capital." Napoleon Bonaparte
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Wasted time
I apologize for wasting your valuable time; I just combed through all of my code and found a stinking typo that resulted in PORTB.0 being set in another part of the program. That's why I could hold it low, but it would go high again as soon as I exited the interrupt service routine. Wow, I'm so ashamed! Thank you all; I have learned a valuable lesson. One important lesson is to get some sleep in stead of trying to work around the clock to finish the project!
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