type.h

这是一个远程温度计 MCU: AT89S52 温度传感器: DS18B20 晶振: 12MHz 使用串口连接,在PC端使用"超级终端"打开 设置如下: 波特率: 4800 数据

#ifndef __TYPE_H__
#define __TYPE_H__

#define bool     bit
#define true     1
#define false    0
#define uint8    unsigned char
#define uchar    uint8
#define uint16   unsigned short int
#define uint     unsigned int
#define uint32   unsigned long int
#define int8     signed char
#define int16    signed short int
#define int32    signed long int
#define uint64   unsigned long long int
#define int64    signed long long int

#define ENABLE() EA=1
#define DISABLE() EA=0

#define HIGHBYTE(w) ((0xFF00 & (w)) >> 8)
#define LOWBYTE(w) (0x00FF & (w))

// Oscillator / resonator frequency (in Hz)
#define OSC_FREQ (12000000UL)

// Number of oscillations per instruction (12, etc)
#define OSC_PER_INST (12)

#endif	// __TYPE_H__