ArdyNT
Full Member level 2
I built the following code to control the TRIAC's firing delay.
This code is working already but somehow it works for a very short period only (maybe less than one minute and then error until I RESTART/plug the power off).
I've been checked it several times but I don't know what is the mistake here???
I've re-built my hardware also, but the problem still the same.
Please help me...
Code:
#include <mega8535.h>
#include <stdio.h>
#include <delay.h>
#include <stdint.h>
unsigned char buf[10];
volatile unsigned int ldr1;
volatile unsigned int ldr2;
volatile unsigned int ldr3;
unsigned int count = 0;
volatile unsigned int x = 2;
volatile unsigned int y = 2;
volatile unsigned int z = 2;
// Alphanumeric LCD functions
#include <lcd.h>
#asm
.equ __lcd_port=0x15 ;PORTC
#endasm
// External Interrupt 0 service routine
interrupt [EXT_INT0] void ext_int0_isr(void)
{
// Start Timer 0
TCCR0 = 0x02;
}
// Timer 0 overflow interrupt service routine
interrupt [TIM0_OVF] void timer0_ovf_isr(void)
{
// Local variables initialization
static uint8_t pulse_flag = 0;
// Reinitialize Timer 0 value
TCNT0=0xD3;
// Increment count every 50 us
count++;
// Front lamp
if(count == x)
{
PORTB.0 = 0;
}
else
if(count == x + 1)
{
PORTB.0 = 1;
pulse_flag++;
}
// Middle lamp
if(count == y)
{
PORTB.1 = 0;
}
else
if(count == y + 1)
{
PORTB.1 = 1;
pulse_flag++;
}
// Back lamp
if(count == z)
{
PORTB.2 = 0;
}
else
if(count == z + 1)
{
PORTB.2 = 1;
pulse_flag++;
}
// Stop timer when all pulses have completed
if(pulse_flag == 3)
{
// Clear flag
pulse_flag = 0;
// Stop the timer
TCCR0 = 0;
// Clear count
count = 0;
}
}
#define ADC_VREF_TYPE 0x40
// Read the AD conversion result
unsigned int read_adc(unsigned char adc_input)
{
ADMUX=adc_input | (ADC_VREF_TYPE & 0xff);
// Delay needed for the stabilization of the ADC input voltage
delay_us(10);
// Start the AD conversion
ADCSRA|=0x40;
// Wait for the AD conversion to complete
while ((ADCSRA & 0x10)==0);
ADCSRA|=0x10;
return ADCW;
}
void main(void)
{
// Input/Output Ports initialization
// Port A initialization
// Func7=In Func6=In Func5=In Func4=In Func3=In Func2=In Func1=In Func0=In
// State7=P State6=P State5=P State4=P State3=P State2=P State1=P State0=P
PORTA=0xFF;
DDRA=0x00;
// Port B initialization
// Func7=Out Func6=Out Func5=Out Func4=Out Func3=Out Func2=Out Func1=Out Func0=Out
// State7=1 State6=1 State5=1 State4=1 State3=1 State2=1 State1=1 State0=1
PORTB=0xFF;
DDRB=0xFF;
// Port C initialization
// Func7=In Func6=In Func5=In Func4=In Func3=In Func2=In Func1=In Func0=In
// State7=T State6=T State5=T State4=T State3=T State2=T State1=T State0=T
PORTC=0x00;
DDRC=0x00;
// Port D initialization
// Func7=In Func6=In Func5=In Func4=In Func3=In Func2=In Func1=In Func0=In
// State7=T State6=T State5=T State4=T State3=T State2=T State1=T State0=T
PORTD=0x00;
DDRD=0x00;
// Timer/Counter 0 initialization
// Clock source: System Clock
// Clock value: 1500.000 kHz
// Mode: Normal top=0xFF
// OC0 output: Disconnected
TCCR0=0x02;
TCNT0=0xD3;
OCR0=0x00;
TCCR1A=0x00;
TCCR1B=0x00;
TCNT1H=0x00;
TCNT1L=0x00;
ICR1H=0x00;
ICR1L=0x00;
OCR1AH=0x00;
OCR1AL=0x00;
OCR1BH=0x00;
OCR1BL=0x00;
ASSR=0x00;
TCCR2=0x00;
TCNT2=0x00;
OCR2=0x00;
// External Interrupt(s) initialization
// INT0: On
// INT0 Mode: Falling Edge
GICR|=0x40;
MCUCR=0x02;
MCUCSR=0x00;
GIFR=0x40;
// Timer(s)/Counter(s) Interrupt(s) initialization
TIMSK=0x01;
// Analog Comparator initialization
// Analog Comparator: Off
// Analog Comparator Input Capture by Timer/Counter 1: Off
ACSR=0x80;
SFIOR=0x00;
// ADC initialization
// ADC Clock frequency: 750.000 kHz
// ADC Voltage Reference: AVCC pin
// ADC High Speed Mode: Off
// ADC Auto Trigger Source: ADC Stopped
ADMUX=ADC_VREF_TYPE & 0xff;
ADCSRA=0x84;
SFIOR&=0xEF;
// Alphanumeric LCD initialization
// Connections are specified in the
// Project|Configure|C Compiler|Libraries|Alphanumeric LCD menu:
// RS - PORTC Bit 0
// RD - PORTC Bit 1
// EN - PORTC Bit 2
// D4 - PORTC Bit 4
// D5 - PORTC Bit 5
// D6 - PORTC Bit 6
// D7 - PORTC Bit 7
// Characters/line: 16
lcd_init(16);
// Global enable interrupts
#asm("sei")
while (1)
{
ldr1=read_adc(0);
ldr2=read_adc(1);
ldr3=read_adc(2);
// Shorten the firing delay
if((PORTB.0 == 1) && (ldr1 <= 450))
{
if(x > 1)
{
x = x - 1;
}
}
// Increase the firing delay
if((PORTB.0 == 1) && (ldr1 >= 600))
{
if(x < 280)
{
x = x + 1;
}
}
// Shorten the firing delay
if((PORTB.1 == 1) && (ldr2 <= 450))
{
if(y > 1)
{
y = y - 1;
}
}
// Increase the firing delay
if((PORTB.1 == 1) && (ldr2 >= 600))
{
if(y < 280)
{
y = y + 1;
}
}
// Shorten the firing delay
if((PORTB.2 == 1) && (ldr3 <= 450))
{
if(z > 1)
{
z = z - 1;
}
}
// Increase the firing delay
if((PORTB.2 == 1) && (ldr3 >= 600))
{
if(z < 280)
{
z = z + 1;
}
}
}
}This code is working already but somehow it works for a very short period only (maybe less than one minute and then error until I RESTART/plug the power off).
I've been checked it several times but I don't know what is the mistake here???
I've re-built my hardware also, but the problem still the same.
Please help me...