Comments on: PIC Lesson: Interrupt

By: Shahrul

Shahrul — Tue, 24 Apr 2012 00:55:08 +0000

w/salam, rizuan. Itu kena bayar.

By: rizuan

rizuan — Mon, 23 Apr 2012 16:34:34 +0000

salam..
abg shahrul blh bg idea x mcm mn nk bt intrrupt antara GSM dan GPS
sy nk hntrkn data dari GPS menerusi GSM modem k fon sy

By: Shahrul

Shahrul — Wed, 07 Dec 2011 16:43:34 +0000

ws, taufiq. Program interrupt jadikan seringkas yg mungkin.

By: taufiq

taufiq — Wed, 07 Dec 2011 06:05:25 +0000

salam…sy ade gune ccp1 interrupt utk capture pulse serendah 20 – 160hz…then sy kira freq pulse tersebut n display ke lcd…skrg ni calculation sy buat dlm interrpt..skrg program sy x bleh display ke lcd kerana berlaku stack overflow…sy ade bace measuremnt bleh buat kat backgrd(main) la…tp mcm mane nak trigger dr interrupt tu ke main untuk measurement..ccp1 interrpt flag hanya set bila ia detect rising edge of pulse…jd sy nak mntak cadangan n solution dr pengalaman saudara mengenai masalah ni…

By: Shahrul

Shahrul — Sun, 11 Sep 2011 18:51:46 +0000

Interrupt can’t put delay.

By: LKS

LKS — Sun, 11 Sep 2011 13:07:15 +0000

can interrupt run with delay command ? will delay command causing the problem ?

my coding

#include
#include “SLCD.h”

char di[10];
int INT[3],a;
void pic_init(void);
void timer_init(void);
void convert(int no, char base);
void display(char number);

static void interrupt isr(void)
{
if(TMR0IF==1)
{
TMR0IF=0;
if(INT[0]=0;i–) display(di[i]);
}
}

void pic_init()
{
TRISB=0×00;
PORTB=0×00;
TRISC=0×00;
PORTC=0×00;
T0CON=0b11000100;
T1CON=0b00000000;
T2CON=0b00000000;
INTCON=0b11100000; //Enable Global, Periperal, TMR0 Interrupt
PIE1=0b00000011; //Enable TMR1, TMR2 Interrupt
PIE2=0b00000000;
}

void timer_init(void)
{

PR2=200;
TMR0=0;
TMR1H=0;
TMR1L=0;
TMR2=0;

INTCON=0b11100000; //Enable Global, Periperal, TMR0 Interrupt
PIE1=0b00000011; //Enable TMR1, TMR2 Interrupt
PIE2=0b00000000;
}

void convert(int no, char base)
{char i;
for(i=0;i<=9;i++) di[i]=0;
i=0;
do{
di[i]=no%base;
no=no/base;
i=i+1;}
while(no!=0);
}

void display(char number)
{switch(number){
case 0:{slcd_putstr("0");break;}
case 1:{slcd_putstr("1");break;}
case 2:{slcd_putstr("2");break;}
case 3:{slcd_putstr("3");break;}
case 4:{slcd_putstr("4");break;}
case 5:{slcd_putstr("5");break;}
case 6:{slcd_putstr("6");break;}
case 7:{slcd_putstr("7");break;}
case 8:{slcd_putstr("8");break;}
case 9:{slcd_putstr("9");break;}
case 10:{slcd_putstr("A");break;}
case 11:{slcd_putstr("B");break;}
case 12:{slcd_putstr("C");break;}
case 13:{slcd_putstr("D");break;}
case 14:{slcd_putstr("E");break;}
case 15:{slcd_putstr("F");break;}
default:{slcd_putstr("?");break;}
}}

By: Shahrul

Shahrul — Sun, 11 Sep 2011 10:34:37 +0000

LKS, make sure interrupt program as short as possible. It will problem when interrupt program is long and it maybe occur another interrupt in the interrupt.

By: LKS

LKS — Sun, 11 Sep 2011 06:05:30 +0000

I cannot run 3 timers simultaneously, only 1 at a time..otherwise the serial SPI LCD will hang.. Using 18F4550 on 20MHz

By: Shahrul

Shahrul — Fri, 05 Nov 2010 07:53:06 +0000

ws, x de. Read analog sensor, tgk ADC Module dan hantar RF dengan UART tgk UART Module.

By: fatimah

fatimah — Fri, 05 Nov 2010 05:31:31 +0000

salam, nak tanya, ada tak contoh 2 programming untuk projeck mcm ni….

read sensor and transmit through RF module