Adcon1
I am using a PIC 18F242 with 20mhz. I want to assign PinA.0 as an ADC input and all other Port A pins as digital inputs. I am currently using TrisaA = %11111111 and ADCON1 = %1001111. The digital input on PortA.2 does not appear to be working, and I assume there is a problem with the way I am reading the ADCON chart. Is ADCON1 = %1001111 correct?
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Hi,
Not surprising ...
IF you use external Vref + and Vref - ...... A2 and A3 are the Vref+/- inputs ...
IF NOT just try
AlainCode:ADCON1 = %01001110 ; ADCON1 is 8 Bits... not 7 !!!
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Why insist on using 32 Bits when you're not even able to deal with the first 8 ones ??? ehhhhhh ...
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IF there is the word "Problem" in your question ...
certainly the answer is " RTFM " or " RTFDataSheet " !!!
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Using ADCON1 = %01001110 corrects my digital input problem, but now PortA.0 does not work as an analog input for ADC. Where can I find some more information on how ADCON1 works?
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Ok, I see ...Originally Posted by Armadus
You can try to open the 18F242 datasheet, ADC section ( $ 17 , I think )
you also could post the code you've written here, I'm sure it will save lots of time to you ...
Alain
************************************************** ***********************
Why insist on using 32 Bits when you're not even able to deal with the first 8 ones ??? ehhhhhh ...
************************************************** ***********************
IF there is the word "Problem" in your question ...
certainly the answer is " RTFM " or " RTFDataSheet " !!!
*****************************************
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Thanks for your help. I must have misread the table that I was looking at. The correct setting
is ADCON1 = %10001110.
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