S3C44B0X的IIC源代码

#include "option.h"
#include "def.h"
#include "44b.h"
#include "44blib.h"

// 对24C02的读、写
// extern void DelayMs(unsigned int);
// extern void Read24c02(unsigned char *RamAddress,unsigned char RomAddress,unsigned char bytes);
// extern void Write24c02(unsigned char *RamAddress,unsigned char RomAddress,unsigned char bytes);

/***************************************************************************/
//#define WriteDeviceAddress 0xa0
//#define ReadDviceAddress 0xa1
#define WriteDeviceAddress 0xA0
#define ReadDviceAddress 0xA1

/***************************************************************************/



#define SDA1  rPDATF|=0x2 ; 
#define SDA0  rPDATF&=0xfd;
#define SCL1  rPDATF|=0x1;  
#define SCL0  rPDATF&=0xfe; 

void iic_delay(int i){//延时函数
for(;i>0;i--)
;
}

/***************************************************************************/
void DelayMs(unsigned int number) {
int i;
for(i=0;i<number*10000;i++)
     ;  
}

/***************************************************************************/
void Start() {
 SDA1;            
 iic_delay(100);
 SCL1;            
  iic_delay(100);
 SDA0;            
  iic_delay(100);
 SCL0;                                             
  iic_delay(100);
}

/***************************************************************************/
void Stop() {
 SCL0;         
  iic_delay(100);
 SDA0;        
  iic_delay(100);
 SCL1;        
  iic_delay(100);
 SDA1;        
  iic_delay(100);
}