global.h
来自「用C51单片机实现的MP3播放器的c代码程序。」· C头文件 代码 · 共 45 行
H
45 行
#ifndef _GLOBAL_DEFINE
#define _GLOBAL_DEFINE
#define LOW 0 //高电平逻辑值
#define HIGH 1 //低电平逻辑值
#define FALSE 0 //逻辑假值
#define TRUE 1 //逻辑真值
//置位操作
#define SET_BIT_0(X) X=X|0x01
#define SET_BIT_1(X) X=X|0x02
#define SET_BIT_2(X) X=X|0x04
#define SET_BIT_3(X) X=X|0x08
#define SET_BIT_4(X) X=X|0x10
#define SET_BIT_5(X) X=X|0x20
#define SET_BIT_6(X) X=X|0x40
#define SET_BIT_7(X) X=X|0x80
//清零操作
#define CLEAR_BIT_0(X) X=X&0xfe
#define CLEAR_BIT_1(X) X=X&0xfd
#define CLEAR_BIT_2(X) X=X&0xfb
#define CLEAR_BIT_3(X) X=X&0xe7
#define CLEAR_BIT_4(X) X=X&0xef
#define CLEAR_BIT_5(X) X=X&0xdf
#define CLEAR_BIT_6(X) X=X&0xbf
#define CLEAR_BIT_7(X) X=X&0x7f
//#define DISK_SECTOR_SIZE 32
//数据类型定义
#ifndef _TYPE_DEFINE
#define _TYPE_DEFINE
typedef bit BOOL;
typedef unsigned char BYTE;
typedef unsigned char CHAR;
typedef unsigned int WORD;
typedef unsigned long DWORD;
#endif
#endif
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