7279.h

单片机控制按键显示芯片HD7279A

#include <reg51.h>
#ifndef _7279_
#define _7279_

#define uchar unsigned char
#define uint  unsigned int

//****** I/O口定义 ******
sbit DAT = P2^2;
sbit KEY = P2^3;
sbit CS  = P2^0;
sbit CLK = P2^1;

//****** 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

//****** 函数定义 ******
//void shortdelay();//8us
//void longdelay();//50us
void send7279(uchar ch);//写入一个字节
//uchar receive7279();//读出一个字节
void write7279(uchar cmd,uchar dta);//写一个命令，一个数据
uchar read7279(uchar cmd);//写一个命令，读出一个数据

#endif