making PORTD as Input/Output PORT.....

[jhon caty]

i am working with PIC18f4550 and using MPLAB C18. I am facing problem in making PORTD as I/O port. plz guide me. THANKS......

 

[madhusuthanan]

you going to use port d as i/p or o/p.

 

[internetuser2k12]

If you want PORTD to be input port then the code is

 TRISD = 0xFF;

. If you want PORTD to be output port then the code is

 TRISD = 0x00;

 

[jhon caty]

i want to initialize some pins of portD as input as some as output .

 

[internetuser2k12]

If you want to intialize RD0, RD1, RD2, RD3 as input and RD4, RD5, RD6, RD7 as output then you do like this

 TRISD = 0b00001111;

0b tells we are using binary format. 0000 makes RD4-RD7 output. 1111 makes RD0-RD3 as input.

Whichever pin you want as output, you set it 0 and whichever pin you want as input you set it 1.

 

[madhusuthanan]

hi jhon caty,
if you use pin as i/p place as '1' , its o/p its place as '0'.