Notes

#include <main.h>

#include <LCD.C>
#define LCD_ENABLE_PIN PIN_D0
#define LCD_RS_PIN PIN_D1
#define LCD_RW_PIN PIN_D2
#define LCD_DATA4 PIN_D4
#define LCD_DATA5 PIN_D5
#define LCD_DATA6 PIN_D6
#define LCD_DATA7 PIN_D7

#INT_TIMER1
void TIMER1_isr(void)
{

}

#include <lcd.c>

void PWM_init()
{
output_low(PIN_C1); // Set CCP1 output low
output_low(PIN_C2); // Set CCP2 output low

setup_ccp1(CCP_PWM); // Configure CCP1 as a PWM
setup_ccp2(CCP_PWM); // Configure CCP2 as a PWM

setup_timer_2(255,255,1);
}

void main()
{
int fanspeed1=0;
int fanspeed2=0;
unsigned int result1,result2;
float t1,t2;
int k,z=0;

setup_adc_ports(AN0_TO_AN4);
setup_timer_1(T1_INTERNAL|T1_DIV_BY_8); //104 ms overflow
PWM_init();
SET_TRIS_B(0xFF);
setup_adc(ADC_CLOCK_INTERNAL );

lcd_init();
while(TRUE)
{
z=0;
set_adc_channel( 0 );
delay_ms(2);
result1=read_adc();
delay_ms(10);

set_adc_channel( 1 );
delay_ms(2);
result2=read_adc();
delay_ms(10);

t1=result1*0.48876;//t=round(val*0.48876);
t2=result2*0.48876;

while(input(PIN_B3))//LCD+ button
{

if(k<2&&z==0)
{

k++;
z++;

}



}

while(input(PIN_B5))//LCD- button
{

if(k>0&&z==0)
{
z++;
k--;
}

}

if(k==0)
{
lcd_gotoxy(1,1);
lcd_putc("TEMP1:");
lcd_gotoxy(1,2);
lcd_putc("TEMP2:");

lcd_gotoxy(7,1);
printf(lcd_putc,"%f",t1);
lcd_gotoxy(7,2);
printf(lcd_putc,"%f",t2);
}
if(k==1)
{

lcd_gotoxy(1,1);
lcd_putc("fFAN1:");
lcd_gotoxy(7,1);
printf(lcd_putc,"%d",fanspeed1);
}
if(k==2)
{
lcd_gotoxy(1,1);
lcd_putc("FAN2:");
lcd_gotoxy(7,1);
printf(lcd_putc,"%d",fanspeed2);
}


while(!input(PIN_B4))
{
/***********
Automatic fan speed limitation by temperature
************/
if(t1>=0 && t1 <=25)
{
fanspeed1=50;
set_pwm1_duty(fanspeed1);
delay_ms(1);

}
else if(t1 >= 25 && t1<= 50)
{
fanspeed1=100;
set_pwm1_duty(fanspeed1);
delay_ms(1);
}
else if(t1 >= 50 && t1<= 75)
{
fanspeed1=150;
set_pwm1_duty(fanspeed1);
delay_ms(1);
}
else
{
fanspeed1=250;
set_pwm1_duty(fanspeed1);
delay_ms(1);
}


//Second fan
if(t2>=0 && t2 <=25)
{
fanspeed2=50;
set_pwm2_duty(fanspeed2);
delay_ms(1);

}
else if(t2 >= 25 && t2<= 50)
{
fanspeed2=100;
set_pwm2_duty(fanspeed2);
delay_ms(1);
}
else if(t2 >= 50 && t2<= 75)
{
fanspeed2=150;
set_pwm2_duty(fanspeed2);
delay_ms(1);
}
else
{
fanspeed2=250;
set_pwm2_duty(fanspeed2);
delay_ms(1);
}

}
// Fan speed controller buttons begin here
while(input(PIN_B4))
{

while(input(PIN_B1))//fan speed increase button
{
if(fanspeed1<250 ) //&& fanspeed2==0
fanspeed1++;

set_pwm1_duty(fanspeed1);
delay_ms(1);
/*
if(speed2>0&&speed1==0)
fanspeed2--;

set_pwm2_duty(speed2);
delay_ms(1);
*/
}

while(input(PIN_B2))//fan speed decrease button
{

if(fanspeed1>0)
fanspeed1--;
set_pwm1_duty(fanspeed1);
delay_ms(1);

/*
if(fanspeed2<250 )//&& fanspeed1==0
fanspeed2--;
set_pwm2_duty(fanspeed2);
delay_ms(1);
*/
}



}



}

}