Hi,
The answer is in your Datasheet ...
PortC1 is shared with the on chip ADC ... so you must tell the chip you want to use it as a DIGITAL pin ...
BTW ... Comparator also shares this pin ... soooo ...
Two datasheet sections to review ...
Alain
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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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