Hello …
This is the project that I want your help on it and I will show the schematic first :

when I connect the power to the circuit I have to press the switch first witch is coming from pin number ( 2- RA0 ) and the led from pin num ( 11 –RC0) will be on , and then it will wait 15 second then activate the sensor . when any detection happen to the sensor the buzzer and the Led will start to beep . in form of : beep – off - beep – off – beep – off – beep - off …… etc
And then to set this circuit I have to press 2 buttons :
_ first one the MCLR which is coming from pin num ( 1).
- The second one is I have to press the switch that is coming from pin num (2- RA0) .
- Then the process will redo again. Wait 15 second first then activate the sensor

What I want you to modify is the program inside the PIC . My request is : the beep from the buzzer I want to be only beep one time and for 4 seconds . in the original program it will beep – off - beep – off – beep – off – beep - off …… etc. and then I want to reactivate the circuit automatically witch mean I don’t want to press the 2 switches witch is coming from( pin number 1 and pin number 2). Also want the waiting of 15 seconds I want it to be 1 or 2 seconds .
This is the program that I want to be modified :

HTML Code:

#include <pic.h> 

//	configuration
//==========================================================================
__CONFIG (0x3F32);

//	define
//==========================================================================
#define	alarm_set	RA0
#define	sensor		RB2
#define	led			RC0
#define buzzer 		RC4


//	main function
//==========================================================================
void main(void)
{
	unsigned char status;
	unsigned long temp1,temp2;

	ADCON1 = 0x06;							//Congifure Port A as digital I/O

	TRISA = 0b11111111;						//Configure Port A as Input
	TRISB = 0b11111111;						//Configure Port B as Input
	TRISC = 0b00000000;						//Configure Port C as Output
	
	status=0;
	led=0;
	buzzer=0;

	while(1)								//Infinity Loop
	{	
		//scan input
		if((alarm_set==0)&&(status!=3))		//Alarm set
		{
			while(alarm_set==0) continue;
			status=1;
			temp1=0;
		}
		
		if((sensor==1)&&(status==2))		//Motion detected
			status=3;
	
		//processing output
		switch(status)
		{
			//Permitted period mode (15 seconds)
			case 1:							
				led=1;
				temp1+=1;
				if(temp1<10000) buzzer=1;	//Sound 'Beep'
				else if(temp1>1000000)
				{
					temp1=0;		
					status=2; 
				}
				else buzzer=0;
				break;

			//Scanning mode
			case 2:							
				temp2+=1;
				if(temp2<2500) led=1;		//LED blink
				else if(temp2<200000) led=0;
				else temp2=0;
				break;

			//Detected mode
			case 3:							
				temp2+=1;
				if(temp2<40000) 			//LED blink & buzzer activated
				{
					led=1;
					buzzer=1;
				}
				else if(temp2<60000) 
				{
					led=0;
					buzzer=0;
				}
				else temp2=0;
				break;
		}
	}
}