ds18b20.h

MSP430单片机的DS18B20程序,自动识别ID号,可同时管理5个DS18B20,非常好用

#ifndef __kh1_h_
#define __kh1_h_


//-------------------------I/O口定义------------------------------------

#define DS_DIR   P6DIR
#define DS_OUT   P6OUT
#define DS_IN    P6IN
#define DS18B20  BIT4

#define W18BUS_1 {DS_DIR |= DS18B20;DS_OUT |= DS18B20;_NOP();DS_DIR &= ~DS18B20;}

                         //DS18B20总线写"1"
#define W18BUS_0 {DS_DIR |= DS18B20;DS_OUT &= ~DS18B20;_NOP();}
                         //DS18B20总线写"0"
           
#define SF18BUS (DS_DIR &= ~DS18B20)         //释放DS18B20总线
#define R18BUS  (DS_IN & DS18B20)


#define FLAG_TEMP_RET  0x01             //DS18B20复位OK
#define FLAG_TEMP_OK   0x02              //DS18B20 传感器OK
#define FLAG_TEMP_OVER 0x04           //搜索DS18B20结束

#define WDT_CLR (WDTCTL = WDTPW + WDTCNTCL + WDTSSEL + WDTIS0)    //看门狗清零
//#define WDT_CLR (_NOP())
#endif