//////////////////////////////////////////////////
/*
----v----
+B < 1 | | 14 > -B
A5 < 2 | | 13 > A0 > AN0 adc input
A4 < 3 | | 12 > A1 > AN1 relay1
A3 < 4 | | 11 > A2 > AN2 relay2
C5 < 5 | | 10 > C0 > AN4 relay3
C4 < 6 | | 9 > C1 > AN5 relay4
AN7 < C3 < 7 | | 8 > C2 > AN6 led
---------
*/
/////////////////initialization/////////////////////
#include <16f676.h>
#device adc=10
#use delay(clock=4000000)
#fuses intrc_io
#fuses NOWDT,PUT,NOPROTECT,BROWNOUT,NOMCLR
/////////////////////pins lables///////////////////
#define relay1 pin_a1 //main change
#define relay2 pin_a2 //main change
#define relay3 pin_c0 //outputchange
#define relay4 pin_c1 //output on off
#define led pin_c4 //
#define sw pin_a3 //active low
#define low_limit 1550 // limit for low voltage
#define high_limit 2450 // limit for high voltage
#define low_ok 2100 // value for main low function compleate
#define high_ok 2440 // value for main high function compleate
///////////////////labling of syntex////////////////
#define on output_high
#define off output_low
////////////////////////////////////////////////////
unsigned int32 main_v=1000,count;
unsigned int8 step=1,time=0,x;
int1 fault=0;
unsigned int8 delay=30;
////////////////////////////////////////////////////
void adc_read (void);
void relay_Set (void);
void main_high (void);
void main_low (void);
void initialize(void);
void start_up (void);
/////////////////////timer1 isr//////////////////////
#int_timer1
void timer1_subrutine(void)
{
set_timer1(65536-62500); // after 0.5S interrupt will rise
time++;
output_toggle(led);
if (((time>delay)||(input(sw)==0)) && (fault==0))
{
time=0; // for next round
on(led);
on(relay4);
disable_interrupts(int_timer1);
disable_interrupts(global);}
}
////////////////////////////////////////////////////////
void main()
{
initialize();
WHILE(1)
{
start_up();
////////////////////normal loop///////////////////////////////
do
{
for(x=0; x<20; x++) //loop to perform voltage stabalization function
// if gap is larg then only one step can not stabal voltage
{
adc_read();
if(main_v>2410)
{step--; if(step<1)step=1; relay_set();} //239V
else if(main_v<1630) //200V
{step++; if(step>6)step=6;relay_set();}
else;
}
}
while((main_v<high_limit)&&(main_v>low_limit)); // check the limits
/////////////////////under over section///////////////////////
fault=1;
time=0; // reset timer if it was running
if(main_v>=high_limit) main_high(); // call relevent function
else if(main_v<=low_limit) main_low(); // call relevent function
disable_interrupts(int_timer1); // reset timer and interrupt
disable_interrupts(global);
fault=0;
}
}
///////////////////////////////////////////////////////////////
void main_low (void)
{
enable_interrupts(int_timer1);
enable_interrupts(global);
off(relay4);
off(relay3);
off(relay2);
off(relay1);
delay_ms(500);
while(main_v<low_ok)
{
time=0;
adc_read();
}
}
///////////////////////////////////////////////////////////////
void main_high (void)
{
enable_interrupts(int_timer1);
enable_interrupts(global);
off(relay4);
on(relay1);
on(relay2);
on(relay3);
delay_ms(500);
while(main_v>= high_ok)
{
time=0;
adc_read();
}
}
///////////////////////////////////////////////////////////
void adc_read (void)
{
delay_ms(20);
main_v =read_adc();
main_v=main_v*5000/1023;
}
////////////////////////////////////////////////////////////////////////////////
void initialize (void)
{
off(relay4);
on(relay1);
on(relay2);
on(relay3);
/////////////input output setting////////////////////
set_tris_a(0b11110001);
set_tris_c(0b11111000);
output_float(pin_a0);
setup_adc(adc_clock_div_64);
SETUP_ADC_PORTS(sAN0 ) ;
}
///////////////////////////////////////////////////////////////////////////////////
void start_up (void)
{
delay_ms(100);
adc_read();
setup_timer_1(t1_internal | t1_div_by_8);
enable_interrupts(int_timer1);
set_timer1(65536-62500); //initialize for correct time
enable_interrupts(global); //unmasked interrupts enable
}
///////////////////////////////////////////////////////////
void relay_set (void)
{
if(step==1)
{ on(relay1);
on(relay2);
on(relay3);}
else if(step==2)
{on(relay1);
on(relay2);
off(relay3);}
else if (step==3)
{on(relay1);
off(relay2);
on(relay3);}
else if (step==4)
{on(relay1);
off(relay2);
off(relay3);}
else if (step==5)
{off(relay1);
off(relay2);
on(relay3);}
else if (step==6)
{off(relay1);
off(relay2);
off(relay3);}
else;
}
//\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\
O = Output, I = Input
_________
Vdd | 1 14 | Vss
(I) SW1 --> RA5 | 2 13 | AN0 <-- ADC_Value (I) For O\P feed bauck
(I) SW2 --> RA4 | 3 12 | RA2 --> RL1 (O)
MCLR | 4 11 | N\C
(O) L1 <-- RC5 | 5 10 | RC0 --> RL2 (O)
(O) L1 <-- RC4 | 6 9 | RC1 --> RL3 (O)
(O) BZR <-- RC3 | 7 8 | RC2 --> RL4 (O)
---------
There is only 4 relays. Other is LED (rc4) and it starts blinking when out of range. If you connect a relay to this pin, it will start to do "tic tic".
