887A IIC通信遇到问题，程序执行在写函数求帮助

只看该作者 · 2012-11-28 11:15

#include<pic.h>
#define uchar unsigned char
#define  uint unsigned int
#define add 0x03
uchar date[4]={1,2,3,4};
uchar i;
uchar d[4];    //读回来的数据放到里面
void init();
void write();
void read();
void led();
void delay(uint time1)
{
uint q,w;
for(q = 0;q < time1; q++)
{
for(w = 0;w < 30; w++);
}
}
void init()
{
  TRISD=0X00;
  PORTD=0X11;
  TRISC=0X00;    //RC3RC4是SCL和SDA
  PORTC=0X00;
  TRISB=0X01; //RB0初始化为高，连接按键
  PORTB=0X01;
  SSPSTAT=0X80;
  SSPCON=0X38; //IIC配置接口选择时钟
  SSPCON2=0X00;
  SSPADD=0X09; //100K=4M/4*(ADD+1)
}
void write()
{

SEN=1;
while(!SSPIF);
SSPIF=0;
SSPBUF=0xA0;
while(!SSPIF);
SSPIF=0;
SSPBUF=add;
while(!SSPIF);
SSPIF=0;
for(i=0;i<4;i++)
{
   SSPBUF=date[i];    //写四个数据到EEPROm
   while(!SSPIF);
   SSPIF=0;
}
PEN=1;
while(!SSPIF);
SSPIF=0;
}
void read()
{
  SEN=1;
  while(!SSPIF);
  SSPIF=0;
  SSPBUF=0xA0;
  while(!SSPIF);
  SSPIF=0;
  SSPBUF=add;
  while(!SSPIF);
  SSPIF=0;
  RSEN=1;
  while(!SSPIF);
  SSPIF=0;
  SSPBUF=0xA1;
  while(!SSPIF);
  SSPIF=0;
  for(i=0;i<4;i++)
  {
RCEN=1;
while(!SSPIF);
d[i]=SSPBUF;
SSPBUF=0;
if(i>=4)
   {
   ACKDT=1;
   }
else
   {
   ACKDT=0;
   }
ACKEN=1;
while(!SSPIF);
SSPIF=0;
  }
  PEN=1;
  while(!SSPIF);
  SSPIF=0;
}
void led()
{
  if(RB0==0)
  {
for(i=0;i<=3;i++)
{
PORTD=d[i];
delay(5000);
}
  }
}
void main()
{
__CONFIG(XT&WDTDIS&LVPDIS);
init();
write();
delay(10);
read();
  while(1)
  {
led();
}
}