Old 6th March 2017, 02:11   #1
faceu
Junior Member
 
Join Date: Nov 2016
Posts: 2
Need Help With Pwm In Pic16f628a

code:
#define XTAL_FREQ 20MHZ /* Crystal frequency in MHz */
#include <pic16f628a.h>
#include <xc.h>
#include "delay.h"

// CONFIG
#pragma config FOSC = HS // Oscillator Selection bits (XT oscillator: Crystal/resonator on RA6/OSC2/CLKOUT and RA7/OSC1/CLKIN)
#pragma config WDTE = OFF // Watchdog Timer Enable bit (WDT disabled)
#pragma config PWRTE = OFF // Power-up Timer Enable bit (PWRT disabled)
#pragma config MCLRE = ON // RA5/MCLR/VPP Pin Function Select bit (RA5/MCLR/VPP pin function is MCLR)
#pragma config BOREN = OFF // Brown-out Detect Enable bit (BOD disabled)
#pragma config LVP = OFF // Low-Voltage Programming Enable bit (RB4/PGM pin has digital I/O function, HV on MCLR must be used for programming)
#pragma config CPD = OFF // Data EE Memory Code Protection bit (Data memory code protection off)
#pragma config CP = OFF // Flash Program Memory Code Protection bit (Code protection off)

#define r1 RA0
#define r2 RA1
#define ll1 RA2
#define l2 RA3
#define buzzer RB7
#define t1 RB4
#define t2 RB5
int pattern,off;
void System_init(void) {
TRISA = 0X00;
TRISB = 0b00000011;
PORTB=0b00000011;
CCP1CON = 0b00001100;
PR2 = 249;
T2CON = 0b00000100;
}
void main(void) {
System_init();
while (1) {
if (pattern == 1) {
r1 = ~r1;
r2 = ~r2;
l1 = 0;
ll2 = 0;
DelayMs(50);

}

if (pattern == 2) {

CCPR1L= 50;
DelayMs(50);
CCPR1L= 240;
}
}
}


this is my PWM program in PIC16F628A(http://www.kynix.com/uploadfiles/pdf...I2fP_95522.pdf). Everything working fine
But when controller running pattern=1 also i'm getting output from PWM...

I don't know what is the problem with my code.
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Old 23rd March 2017, 05:15   #2
wxiao
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