define.h

我自己写的一个电子时钟,带秒表,计时器,和简单的计算器功能,供初学者参考

#ifndef __DEFINE_H__
#define __DEFINE_H__
//****** HD7279A指令 ******
#define CMD_RESET 0xa4
#define CMD_TEST 0xbf
#define DECODE0 0x80
#define DECODE1 0xc8
#define CMD_READ 0x15
#define UNDECODE 0x90
#define RTL_CYCLE 0xa3
#define RTR_CYCLE 0xa2
#define RTL_UNCYL 0xa1
#define RTR_UNCYL 0xa0
#define ACTCTL 0x98
#define SEGON 0xe0
#define SEGOFF 0xc0
#define BLINKCTL 0x88

//*** I/O ***
sbit cs=P1^5; 
sbit clk=P1^4; 
sbit dat=P1^3;
sbit key=P3^3;


sbit enable = P0^0;
sbit shiftin = P0^1;
sbit en_cs = P0^2;
sbit aclr = P0^3;
sbit shift_clk = P0^4;


#endif