PIC18F97J94 UART-INPUT ERROR

[FahriSnl]

HELLO.
I'm currently working on a project with 18F97J94. My design was working perfectly, then I added a discrete LCD module to the project which I communicate via eusart and it works fine as well. but then I noticed when I use " UART4_INIT(115200) " somehow RH4 PIN is stops working as input. But when I define it as output there is no problem. The thing that I don't understand is RH4 pin doesn't have any connection with EUSART registers. Does anyone have an idea what's wrong with it?
(I also manually disabled CCP2,AN12 and LCD registers)

[filip]

Hi,

If I'm correct, UART4 initialization maps RC4 and RC5 pins, there is no mention of RH4 pin there.

Can you go through debug and see what is going on with the PORTH,LATH,TRISH register ?

Regards,
Filip.

[FahriSnl]

Hi,

If I'm correct, UART4 initialization maps RC4 and RC5 pins, there is no mention of RH4 pin there.

Can you go through debug and see what is going on with the PORTH,LATH,TRISH register ?

Regards,
Filip.

Hi Fillip, thanks for your reply.
Yes I use C4-C5 pins for UART, and I tried to set the TRIS register for the RH4 pin as input after UART_INIT but it is still no use. I also just checked for input in while(1) but it's not responding.