msp430g2553模拟iic接口

#include <MSP430g2553.h> 

#define  SlaveWriteAddress  0xa0 

#define  SlaveReadAddress   0xa1 

#define  OwnAddress         0xee 

#define  I2CSDA             BIT1  

#define  I2CSCL             BIT2 

#define  I2CSDA_SET_1       P1OUT |=  I2CSDA 

#define  I2CSDA_SET_0       P1OUT &=~ I2CSDA 

#define  I2CSCL_SET_1       P1OUT |=  I2CSCL 

#define  I2CSCL_SET_0       P1OUT &=~ I2CSCL 

#define  I2CSDA_INPUT_IN    P1IN&I2CSDA 

  

unsigned char READI2CBUF; 

  

void delay5us( void ) 

    { 

      unsigned char count=8; 

      while(count--); 

    }      

  

void Delay_MS( unsigned int m ) 

    {     

      unsigned int i,j; 

      for(i=0;i<m;i++) 

          for(j=0;j<125;j++); 

    }  

void Setting_System_Clock_For_On_Chip_RC( char Frequency ) 

    { 

      switch (Frequency) 

        {