isd1700.c.bak

mc51单片机与isd1700芯片的通信程序

#include <reg51.h>
#include "address.h"

unsigned char chesr1( );
void waitrdy( );
void rdstatus( );
unsigned char chesr0( );
void clrint( );
void powerup( );
void stopp( );
void chk_mem( );
void fwd( );
void dstop( );
void gerase( );
void rest( );
void wr_apc(unsigned char a1,unsigned char a2);
void delay10ms( );
void delayms(unsigned char ts);
unsigned char SPOI(unsigned char instr);

unsigned char chesr1( )
{ 
	unsigned char sr1;
	rdstatus( );
	sr1=SPOI(0x05);
	sr1=SPOI(0x00);
	sr1=SPOI(0x00);
	return sr1;
}	

void waitrdy( )
{
	unsigned char resr;
	do
	{
	resr=chesr1( );
  }while(resr^0==0);
} 


void rdstatus( )
{
 unsigned char resr;
 resr=SPOI(0x05);
 resr=SPOI(0x00);
 resr=SPOI(0x00);	
 SS=1;
}	 

unsigned char chesr0( )
{ 
 	unsigned char sr0;
	rdstatus( );
	sr0=SPOI(0x05);
	return sr0;
}	


void clrint( )
{
 unsigned char i;
 i=SPOI(0x04);
 i=SPOI(0x00);
 SS=1;
 delayms(10);
}

void powerup( )
{
 unsigned char i;
 i=SPOI(0x01);
 i=SPOI(0x00);
 SS=1;
 delayms(10);
}

void stopp( )
{
	unsigned char i;
	i=SPOI(0x02);
	i=SPOI(0x00);
	SS=1;
	delayms(10);
}

void chk_mem( )
{
	unsigned char i;
	i=SPOI(0x49);
	i=SPOI(0x00);
	SS=1;
	delayms(10);
}

void fwd( )
{
	unsigned char i;
	i=SPOI(0x48);
	i=SPOI(0x00);
	SS=1;
	delayms(10);
}

void dstop( )
{
 unsigned char i;
 i=SPOI(0x07);
 i=SPOI(0x00);
 SS=1;
 delayms(10);
}

void gerase( )
{
 unsigned char i;
 i=SPOI(0x43);
 i=SPOI(0x00);
 SS=1;
 delayms(10);
}

void rest( )
{
 unsigned char i;
 i=SPOI(0x03);
 i=SPOI(0x00);
 SS=1;
 delayms(10);
}

void wr_apc(unsigned char a1,unsigned char a2)
{
 unsigned char i;
 i=SPOI(0x65);
 i=SPOI(a1);
 i=SPOI(a2);
 SS=1;
 delayms(10);
}

unsigned char SPOI(unsigned char instr)
{
 unsigned char resta;
 unsigned char i,j;
 bit m;
 SCLK=1;
 SS=0;
 for(i=0;i<8;i++)
 {
  SCLK=0;
  for(j=0;j<2;j++)
  {
  }
 m=MISO;
 resta^i=m;
 m=instr^i;




 MOSI=m;
 SCLK=1;	
 }
 MOSI=0;
 return resta;	
}

void delay10ms( )
{
 TMOD=0x01;
 TH0=0xD8;
 TL0=0xf0;
 TR0=1;
 do
 { 
 }while(TF0==0);
 TR0=0;
 TF0=0;	
} 

void delayms(unsigned char ts)
{
 unsigned char j;
 for(j=0;j<ts;j++)
 {
 	delay10ms( );
 }	
}