C8051F340单片机IIC通信教程

//--------------------------------------------------------------------------------    
#include <c8051f340.h>     
#include <stdio.h>    
typedef  unsigned int   uint ;        
typedef  unsigned char  uchar;                
#define  SYSCLK         12000000              // 12M内部时钟    
#define  BAUDRATE        9600                 // Baud rate of UART in bps    
sbit SDA = P1^0;   
sbit SCL = P1^1;   
uchar  buffer[16];    //数据存储器    
   
bit  Ack(void); /*应答位*/   
bit  NAck(void);     //无应答位    
void delay();        //长延时    
void UART0_Init (void);   //UART Init    
void Start(void); /*起始条件*/   
void Stop(void); /*停止条件*/   
void Send(uchar Data); /*发送数据子程序,Data为要求发送的数据*/   
uchar Read(void); /*读一个字节的数据,并返回该字节值*/   
void OSCILLATOR_Init (void);   //内部振荡器初始化    
void PORT_Init (void);         //I/O初始化    
void wait(int n);              //精确延时    
int  I2cReadWriteZL(int mode,unsigned char ChipAddress,unsigned char *Data,int NbData);   
void outputchar(uint order);   
void selectout(uint dat);   
   
   
   
void main (void)   
{     

   uchar  i;      
   uchar  deviceAddr=0x1C;   
   uchar  dat[2]={0x14,0xC0};   
   uchar  ucBuffer[3]={0xFF};   
   
   
   PCA0MD &= ~0x40;                    // WDTE = 0 (clear watchdog timer    
                                       // enable)    
   
   PORT_Init();                        // Initialize Port I/O    
   OSCILLATOR_Init ();                 // Initialize Oscillator    
     
   UART0_Init();                       //Initialize  UART0    
   
   delay();   
   delay();   
    
   
      
    
}   
   
   
   
   
void PORT_Init (void)   
{   
   
   P1MDOUT &= 0x00;                    // Enable UTX as push-pull output    
   P0MDOUT |= 0x10;