Need help with program 18F452

[roberth]

Hi,
I there anything wrong with this program, all I want to do is put a hight state (+5v) on port A & B on a 18F452..

And one more thing, has anyone have problem with programming
hexfiles with a "Universal Programmer", like Labtool-48, when I swap the bytes in the hexfiles the programmer programmes the config-bits correct but the program doesn't start, I have a nice OSC signal. I'm using PCH v3.114
--------------------------------------------------------------
#include <18F452.h>
#device *=16

#FUSES HS,NOWDT,NOPROTECT,PUT,BROWNOUT
#ID CHECKSUM
#ZERO_RAM
#use DELAY(CLOCK=7372800)
#use fast_io(A)
#use fast_io(B)
#BYTE PORTB = 0xF81
#BYTE PORTA = 0xF80

SET_TRIS_A(0);
SET_TRIS_B(0);
void main(void)
{
PORTA = 0xFF;
PORTB = 0xFF;
}
--------------------------------------------------------------

Best regards,
Robert
___________________________
This message was ported from CCS's old forum
Original Post ID: 8539

[Hans Wedemeyer]

Put set_trisX() in the main()

#include <18F452.h>
#device *=16
#FUSES HS,NOWDT,NOPROTECT,PUT,BROWNOUT
#ID CHECKSUM
#ZERO_RAM
#use DELAY(CLOCK=7372800)
#use fast_io(A)
#use fast_io(B)
#BYTE PORTB = 0xF81
#BYTE PORTA = 0xF80

void main(void)
{
int i=0;

SET_TRIS_A(0);
SET_TRIS_B(0);
PORTA = 0xFF;
PORTB = 0xFF;

// just to allow you to see(with scope) what's happening
while(1)
{
PORTA = i;
i++;
delay_us(100);
PORTB = i;
delay_us(100);
}

}
:=--------------------------------------------------------------
:=
:=Best regards,
:=Robert
:=
:=
___________________________
This message was ported from CCS's old forum
Original Post ID: 8556

[Ivar Johnsrud]

:=You would also need to set porta to digital:
:=
:=Put set_trisX() in the main()
:=
:=#include <18F452.h>
:=#device *=16
:=#FUSES HS,NOWDT,NOPROTECT,PUT,BROWNOUT
:=#ID CHECKSUM
:=#ZERO_RAM
:=#use DELAY(CLOCK=7372800)
:=#use fast_io(A)
:=#use fast_io(B)
:=#BYTE PORTB = 0xF81
:=#BYTE PORTA = 0xF80
:=
:=void main(void)
:={
:= int i=0;
:=
:= setup_adc(NO_ANALOGS);
:= SET_TRIS_A(0);
:= SET_TRIS_B(0);
:= PORTA = 0xFF;
:= PORTB = 0xFF;
:=
:= // just to allow you to see(with scope) what's happening
:= while(1)
:= {
:= PORTA = i;
:= i++;
:= delay_us(100);
:= PORTB = i;
:= delay_us(100);
:= }
:=
:=}
:=:=--------------------------------------------------------------
:=:=
:=:=Best regards,
:=:=Robert
:=:=
:=:=
___________________________
This message was ported from CCS's old forum
Original Post ID: 8565