Help Needed for C programming

guy if u all read my previous thread knowing that i using MPLAB IDE v8.20a C compiler to write C programming for my microchip 18f24k20 but now i have a problem.. i doing the same project but due to the microchip problem. i have change the chip to 18f252.

i wanted to know that if i using the below code will i display anything? or is setting it as a input/output?

PORTA = 0x00
or
TRISA = 0x00
or
LATA = 0x00

which one is to send information of 0x00 ???

 

i also need help in how to write a code for blinking LED

 

Are you using CCS compiler?

 

Not sure about the pic18 but for the pic24 it should be

PORTA = 0x00 - Sets all pins off or 0 for portA
or
TRISA = 0x00 - Sets all pins in portA as Outputs

To make them inputs and turn them on you should use 0xFF.
0x00 = 00000000
0xFF = 11111111

 

The inverse is true for some pic... For the dsPIC4013, you use TRISA = 0x0000 for outputs and TRISA = 0xFFFF for inputs. Just read about that register in the manual. But it is supposed to be something like that.

 

Your right. I looked it up TRISA = 0x00 = all outputs. I was just trying to tell him what was going on from memory.

 

The trick I use for remembering this is: 0 for Outputs, 1 for 1nputs.