iic.h

MSP430 DS1302程序库

#ifndef _IIC
#define _IIC
//SDA 数据线定义
#define SDAOUT P2DIR |= BIT5
#define SDAIN  P2DIR &= ~BIT5
#define SDA1   P2OUT |= BIT5
#define SDA0   P2OUT &= ~BIT5
//SCL 时钟线定义
#define SCLOUT P2DIR |= BIT6
#define SCL1   P2OUT |= BIT6
#define SCL0   P2OUT &= ~BIT6

#define SDA_STATE P2IN & BIT5  //读入SDA状态

//--------------------------------------
#define SDA_MOV_BIT 5         //SDA 数据调整移位

//从器件接收方的应答返回标志
#define OK 0x01                 //表示从器件有应答
#define NO 0x00                 //表示从器件无应答  

//IIC总线操作成失标志
#define error 0x01              //错误
#define right 0x00              //正确


unsigned char IIC(unsigned char *DataBuff,char ByteQuantity,unsigned int Address,unsigned char ControlByte);

#endif