main.c.bak

mc51单片机与isd1700芯片的通信程序

#include <reg51.h>

void main( )
{
 SP=0x70;
 P1=0xff;
 P2=0xff;
 P3=0xff;
 P0=0xff;
 EA=0;
 maii( );
}

void maii( )
{
 unsigned char apc1,apc2;  
 rest( );
 dstop( );
 LED=1;
 if(STOP=0)
 {
 	mrest( ); 
 }
 do{}while(AN==1);
 delay( );
 if(AN==0)
 { 
  powerup( );
  switch(MORA)
  {
   case  1 : apc1=0x40;
             apc2=0x04;
             break;
   case  0 : apc1=0x80;
   	         apc2=0x04;
   	         break;
  default : break;
  }
  wr_apc(apc1,apc2);
  waitrdy( );  	                   
  while(1)
  {
   clrint( );
   waitrdy( );
   chk_mem( );
   switch(PR)
   {
    case 1 :  rec( );
  	          break;
    case 0 :  play( );
  	          break;
  	default  : break;          
   }
  } 
 }
}


void rec( )
{
 bdata unsigned char resta;
 unsigned char i;
 delayms(50);
 do
 {
  resta=SPOI(0x41);
  resta=SPOI(0x00);
  SS=1;
  resta=chesr1( );
 }while(resta^3==0);
 LED=0;
 for(i=0;i<200;i++)
 {
  while(AN==0)
  {
 	 checkfull( );
  }
 }
 LED=1;
 clrint( );
 stopp( );
 do
 {
 	 if(STOP==0) mrest( );
 }while(AN==1);
 clrint( );
 stopp( );
}

void play( )
{
 bdata unsigned char resr;
 do{ }while(AN==0);
 do
 {
 resr=SPOI(0x40);
 resr=SPOI(0x00);
 SS=1;
 resr=chesr0( );
 }while(resr^0==1);
 LED=0;
 do
 {
 	if(STOP==0) mrest( );
 	resr=chesr1( );
 }while(resr^0==0);
 LED=1;
 stopp( );
 do
 {
 	if(STOP==0) mrest( );
 }while(AN==1);
 fwd( );
}


void checkfull( )
{
 bdata unsigned char i;
 unsigned char j;
 rdstatus( );
 i=SPOI(05);
 if(i^1==1)
 {
 	while(1)
 	{
 	 LED=1;
 	 for(j=0;j<10;j++)
 	 {
 	 	delayms(5);
 	 	if(AN==0) mrest( );   	 	
   } 
 	 LED=0;
 	 for(j=0;j<10;j++)
 	 {
 	 	delayms(5);
 	 	if(AN==0) mrest( ); 
 	 } 
 	}
 }	
}

void mrest( )
{
 unsigned char i,j;
 for(i=0;i<60;i++)
 {
 	if(STOP==1) break;
 	if(i==59)
 	{
 	 gerase( );
   for(j=0;j<3;j++)
   {
 	  LED=0;
 	  delayms(40);
 	  LED=1;
 	  delayms(40);
   }
  }
 }
 stopp( );
 clrint( );
 maii( );				
}