Port C - 18F46K80

[pfernier]

Hello,
when using UART1 pin RC6-RC7 i cannot use RCO to RC3 as I/O input .
Probably something wrong in registers located in "Project Options" --> "Configure" but what?
RCO to RC3 are working fine when UART1 not in use.
Thanks

[Benj]

Hello,

Please can you attach your program and we will have a look. I have checked the silicone errata document on the Microchip website but although there are documented issues surrounding the UART hardware there is no specific mention of this problem.

[pfernier]

Hello,
Sorry for the late answer, i was out of my office for one week.
The code is in the attached file, the reading of RC[3..0] is located in Main.
These 2 icons are disable and replaced (for the moment) by the use of others bits.
When I read RC[3..0} and output it on RD[7..0] all these 4 bits are set to 0 (this test has been suppressed on the Flowcode program).
I 've checked the input RC[3..0] and measured 3.2v, which a level "1"
Best regards.
Pascal