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Port B Interrupts + Analog Question [Solved]

 
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mullymully



Joined: 21 Jan 2013
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Port B Interrupts + Analog Question [Solved]
PostPosted: Mon Jan 21, 2013 11:53 am     Reply with quote

I'm working with the datasheet, but I have a question about sharing Port B change on port (B4-B7) and Analog together. The details are:

1) PIC18F66K80
2) RB5 is an external interrupt
3) RB4 is an analog input

So my question is, if I:

1) TRIS RB4 & RB5 as inputs, and
2) Set RB4 as an analog input

Will the PORT B interrupt on change fire when an analog input exceeds V_In_High (0.85 * VCC, or 4.25V @ 5V_VCC)?

More basically, if RB4 is declared an analog input, can it cause a Change-On-Port interrupt?
mullymully



Joined: 21 Jan 2013
Posts: 2

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PostPosted: Mon Jan 21, 2013 12:01 pm     Reply with quote

I believe I found my answer... thought it would be harder ;)

On datasheet p.168 I see that I can set bits 7-4 in the IOCB register to enable or disable interrupt-on-change for the respective pins.

Thanks for the time... hopefully i didn't waste any.
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