i2c.h

来自「msp430模拟iic程序,读写外部eeprom」· C头文件 代码 · 共 16 行

#include "msp430x14x.h"

#define   SDA   BIT6  //iic数据线
#define   SCL   BIT7  //iic时钟线

#define   IICPORTIN P2IN
#define   SET_SDA() P2OUT |= SDA
#define   CLR_SDA() P2OUT &= ~SDA
#define   SET_SCL() P2OUT |= SCL
#define   CLR_SCL() P2OUT &= ~SCL
#define   SDA_OUT() P2DIR |= SDA
#define   SDA_IN()  P2DIR &= ~SDA

#define   iic_port_ini()  P2SEL &= ~(SDA+SCL);P2DIR |= (SDA+SCL);P2OUT |= (SDA+SCL)