#define TIMEOUTS 98 // no. of timeouts to occur for waiting (1 timeout = 200x256us), 98 timeouts=5sec
#include
#include
__CONFIG(0x3ff1);
void ringcounter(void);
void dowakeon(void);
void dowakeoff(void);
void delay(void);
void wait5sec(void);
void getdipswitch(void);
char WAKEON = 4;
char WAKEOFF = 5;
char WAITDELAY = 2;
char ringcount=0;
unsigned int x=0;
void main(void)
{
GIE=0; //disable interrupts
TRISA=0b00011111; //PORTA=in
TRISB=0b00000000; //B0 to B7 output
OPTION=0b11010111; // tmr0/prescaler 256/tmr0 --> internal
PORTB =0; //turn all relays off
// getdipswitch function sets the intial on/off rings and also the delay for rings to turn device on through A4,A3,A2,A1
// A4 A3 wakeon wakeoff
// 0 0 2 3
// 0 1 3 4
// 1 0 4 5
// 1 1 5 6
//
// A2 A1 waitdelay
// 0 0 5
// 0 1 10
// 1 0 15
// 1 1 20
getdipswitch(); //configure rings and delay
while(1)
{
ringcounter();
if(ringcount==WAKEON)
dowakeon();
else if(ringcount==WAKEOFF)
dowakeoff();
}
}
void ringcounter(void)
{
ringcount=0;
while(1)
{
x=0;
TMR0=0;
while(RA0==0)
{
if(TMR0>=200) // to keep some margin in case TMR0 rolls back to 00, keep it to C8(200dec)!!
{
TMR0=0;
x++;
if(x>=TIMEOUTS) //if timeout 5s return. Total timeout = 200us*TIMEOUTS*256(prescaler)
return;
}
}
while(RA0==1); //while A0=1 wait
ringcount++;
}
}
void dowakeon(void)
{
char i;
for(i=0;i
{
ringcounter();
if(ringcount==0)
continue;
else
switch(ringcount)
{
case 1: RB0=1;
break;
case 2: RB1=1;
break;
case 3: RB2=1;
break;
case 4: RB3=1;
break;
case 5: RB4=1;
break;
case 6: RB5=1;
break;
case 7: RB6=1;
break;
case 8: RB7=1;
break;
default: break;
}
}
ringcount=0;
}
void dowakeoff(void)
{
char i;
for(i=0;i
{
ringcounter();
if(ringcount==0)
continue;
else
switch(ringcount)
{
case 1: RB0=0;
break;
case 2: RB1=0;
break;
case 3: RB2=0;
break;
case 4: RB3=0;
break;
case 5: RB4=0;
break;
case 6: RB5=0;
break;
case 7: RB6=0;
break;
case 8: RB7=0;
break;
default: break;
}
}
ringcount=0;
}
void wait5sec(void)
{
x=0;
TMR0=0;
while(x
if(TMR0>=200) // to keep some margin in case TMR0 rolls back to 00, keep it to C8(200dec)!!
{
TMR0=0;
x++;
}
return;
}
void getdipswitch(void)
{
char temp1,temp2;
temp1 = (PORTA&0b00011000)>>3; //get the A4,A3 bits into temp1
temp2 = (PORTA&0b00000110)>>1; //get the A2,A1 bits into temp2
switch(temp1)
{
case 0: WAKEON=2;WAKEOFF=3;
break;
case 1: WAKEON=3;WAKEOFF=4;
break;
case 2: WAKEON=4;WAKEOFF=5;
break;
case 3: WAKEON=5;WAKEOFF=6;
break;
default:break;
}
switch(temp2)
{
case 0: WAITDELAY=1;
break;
case 1: WAITDELAY=2;
break;
case 2: WAITDELAY=3;
break;
case 3: WAITDELAY=4;
break;
default:break;
}
}
