st5008.c

报警控制程序

#include " reg52.h"
#include "main.h"
#include "string.h"

extern bit flag_ea;
extern unsigned char data Cummun;





extern void delay1ms(unsigned char  count);
extern void send_char_com(unsigned char ch);

//extern void com_isr(void);
/*------------------------------------------------------------------
                send the data sbuf
  ------------------------------------------------------------------*/
/*extern void send_char_com (unsigned char ch)
{ 
  	SBUF=ch;
	while(TI==0);
	TI=0;
}*/ 
/* -----------------------------------------------------------------
             deal with the dvr inquire command
   -----------------------------------------------------------------*/
 void alarm3_in (void)
{
 unsigned char tbuf[8];
 unsigned int i=0;
 RT_CON=1;
 delay1ms(1);
 tbuf[0]=0xf8;
 if(Cummun==0x00)                                    //2004-8-2 added
 tbuf[1]=0x01;
 else
 tbuf[1]=Cummun;
 tbuf[2]=0x34;
 tbuf[3]=0x08;
 tbuf[4]=~P0;// & dvr_set); 
 tbuf[5]=0x00;
 tbuf[6]=tbuf[1]+tbuf[2]+tbuf[3]+tbuf[4]+tbuf[5];
 
   
	do
	{
		send_char_com(tbuf[i]);
	//	delay1ms();
		i++;
	} while(i <7 );
 RT_CON=0;
 } 
 


  

extern void st5008(unsigned char rbuf1[8])
{        
          unsigned char data s;
   	      s=rbuf1[2];
		  switch(s)
		  {
		   case 0x31:alarm3_in();
		          break;
		   case 0x32:P2=~rbuf1[4];
		          break;
		   //case 2:dvr_set=rbuf1[4];
		     //     break;
	      }
	  flag_ea=1;
	 
}