need hitech config help

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ok thanx for your help very very much thanx

and hitech working by changing config settings now i can write any thing and it wil scroll

now i have problems with reading input pins (RA0, RA1, RA2)

am supplying voltage to this pins using 5.1v zener diode and pull up resistors from 12v

how can i read it ?
by if statement or by interrupt ?

i used the following code in main function

while(1)
{

if (PORTA & 0b00000001 != 0)
{

ScrollText(" STOP" );

}
if (PORTA & 0b00000010 != 0)
{
ScrollText(" <<<" );

}
if (PORTA & 0b00000100 != 0)
{

ScrollTextRight(">>> " );

}
}


but it dont worked is it correct?

or how can i use interupt for this?

pls help me ?
 
Could you post your whole code so we can see how you have portA configured. You are still using 18f2550
right?
 
Last edited:
Code: 
void main(void)
{


OSCCON=0xf0;
T0CON=0xC1;
TMR0H=0;
TMR0L=240;
INTCON=0;
INTCON2=0;
INTCON3=0;
PIR1=0;
PIR2=0;
PIE1=0;
PIE2=0;
IPR1=0;
IPR2=0;
IPEN=0;
ADCON0=0;
ADCON1=0x0f;
ADCON2=0;


T1CON=0;
T2CON=0;
T3CON=0;

SSPCON1=0;
SSPCON2=0;
RCSTA=0;
TRISA=0b00000111;
TRISB=0;
TRISC=0b10000000;

CCP1CON=0,
CCP2CON=0;

SPBRG=51;
TXSTA=0x22;
RCSTA=0x90;
BAUDCON=0x48;
SPBRGH=0;
POR=1;
Clear();
IPEN=1;
PORTA = 0b00000000;
PORTB = 0b00000000;
PORTC = 0b00000000;
GIEH = 1;
GIEL = 1;
//INTCONbits.PEIE = 1;
TMR0IE = 1;

    while(1)
    {

if (PORTA & 0b00000001 != 0)
{

ScrollText("   STOP" );

}
if (PORTA & 0b00000010 != 0)
{

ScrollText("   <<<" );

}
if (PORTA & 0b00000100 != 0)
{

ScrollTextright("   >>>" );

}
    }
}

am also attached image showing connection to input pins
 

Attachments

  • POWER TO INPUT.GIF
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