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模块化代码在目录另一篇文章
此代码实现
按S1~S10按键输入密码
S11:取消
S12:确认
输入密码:3456 LCD1602 显示 OK
否则 显示 ERR
代码如下:
#include <REGX52.H>
#include "Delay.h"
#include "MatrixKey.h"
#include "LCD1602.h"
/*
´Ë´úÂëÔÚSTC89C52¿ª·¢°åʵÏÖ£º
ͨ¹ý°´ÏÂ4X4¾ØÕó¼üÅ̵ÄÏàÓ¦°´Å¥
ÔÚÒº¾§ÆÁÉÏÏÔʾ¶ÔÓ¦¼üÂë
ÀýÈ磺°´ÏÂS9°´Å¥ ÔòÒº¾§ÆÁÏÔʾ£º
KKeyNum:
09
*/
unsigned char KeyNum;
unsigned int password;
unsigned int count;
void main()
{
LCD_Init();
LCD_ShowString(1,1,"passbook:");
while(1)
{
KeyNum=Matrixkey();
if(KeyNum)
{
if(KeyNum<=10)
{
if(count<4)
{
password*=10;
password+=KeyNum%10;
count++;
}
LCD_ShowNum(2,1,password,4);
}
if(KeyNum==11)
{
KeyNum=0;
password=0;
count=0;
LCD_ShowNum(2,1,password,4);
}
if(KeyNum==12)
{
if(password==3456)
{
LCD_ShowString(1,12,"OK ");
}
if(password!=3456)
{
LCD_ShowString(1,12,"ERR");
}
}
}
}
}
此代码所用的模块化编程文件在目录下
此代码为c语言在keil v5软件在(STC89C52)开发板的应用
#include <REGX52.H>
#include "Delay.h"
#include "MatrixKey.h"
#include "LCD1602.h"
/*
´Ë´úÂëÔÚSTC89C52¿ª·¢°åʵÏÖ£º
ͨ¹ý°´ÏÂ4X4¾ØÕó¼üÅ̵ÄÏàÓ¦°´Å¥
ÔÚÒº¾§ÆÁÉÏÏÔʾ¶ÔÓ¦¼üÂë
ÀýÈ磺°´ÏÂS9°´Å¥ ÔòÒº¾§ÆÁÏÔʾ£º
KKeyNum:
09
*/
unsigned char KeyNum;
void main()
{
LCD_Init();
LCD_ShowString(1,1,"KeyNum:");
while(1)
{
KeyNum=Matrixkey();
if(KeyNum)
{
LCD_ShowNum(2,1,KeyNum,2);
}
}
}
1、软件延时函数
#ifndef __DELAY_H__
#define __DELAY_H__
void Delay(unsigned int xms);
#endif
#include <REGX52.H>
#include <intrins.H>
void Delay(unsigned int xms)
{
while(xms--)
{
unsigned char i, j;
_nop_();
i = 2;
j = 199;
do
{
while (--j);
} while (--i);
}
}
#ifndef __DELAY_H__
#define __DELAY_H__
void Delay(unsigned int xms);
#endif
#include <REGX52.H>
#include "Delay.h"
unsigned char Matrixkey()
{
unsigned char KeyNumber=0;
P1=0xFF;P1_0=0;
if(P1_4==0){Delay(20);while(P1_4==0);Delay(20);KeyNumber=16;}
if(P1_5==0){Delay(20);while(P1_5==0);Delay(20);KeyNumber=12;}
if(P1_6==0){Delay(20);while(P1_6==0);Delay(20);KeyNumber=8;}
if(P1_7==0){Delay(20);while(P1_7==0);Delay(20);KeyNumber=4;}
P1=0xFF;P1_1=0;
if(P1_4==0){Delay(20);while(P1_4==0);Delay(20);KeyNumber=15;}
if(P1_5==0){Delay(20);while(P1_5==0);Delay(20);KeyNumber=11;}
if(P1_6==0){Delay(20);while(P1_6==0);Delay(20);KeyNumber=7;}
if(P1_7==0){Delay(20);while(P1_7==0);Delay(20);KeyNumber=3;}
P1=0xFF;P1_2=0;
if(P1_4==0){Delay(20);while(P1_4==0);Delay(20);KeyNumber=14;}
if(P1_5==0){Delay(20);while(P1_5==0);Delay(20);KeyNumber=10;}
if(P1_6==0){Delay(20);while(P1_6==0);Delay(20);KeyNumber=6;}
if(P1_7==0){Delay(20);while(P1_7==0);Delay(20);KeyNumber=2;}
P1=0xFF;P1_3=0;
if(P1_4==0){Delay(20);while(P1_4==0);Delay(20);KeyNumber=13;}
if(P1_5==0){Delay(20);while(P1_5==0);Delay(20);KeyNumber=9;}
if(P1_6==0){Delay(20);while(P1_6==0);Delay(20);KeyNumber=5;}
if(P1_7==0){Delay(20);while(P1_7==0);Delay(20);KeyNumber=1;}
return KeyNumber;
}
#ifndef __LCD1602_H__
#define __LCD1602_H__
//用户调用函数:
void LCD_Init();
void LCD_ShowChar(unsigned char Line,unsigned char Column,char Char);
void LCD_ShowString(unsigned char Line,unsigned char Column,char *String);
void LCD_ShowNum(unsigned char Line,unsigned char Column,unsigned int Number,unsigned char Length);
void LCD_ShowSignedNum(unsigned char Line,unsigned char Column,int Number,unsigned char Length);
void LCD_ShowHexNum(unsigned char Line,unsigned char Column,unsigned int Number,unsigned char Length);
void LCD_ShowBinNum(unsigned char Line,unsigned char Column,unsigned int Number,unsigned char Length);
#endif
#include <REGX52.H>
//引脚配置:
sbit LCD_RS=P2^6;
sbit LCD_RW=P2^5;
sbit LCD_EN=P2^7;
#define LCD_DataPort P0
//函数定义:
/**
* @brief LCD1602延时函数,12MHz调用可延时1ms
* @param 无
* @retval 无
*/
void LCD_Delay()
{
unsigned char i, j;
i = 2;
j = 239;
do
{
while (--j);
} while (--i);
}
/**
* @brief LCD1602写命令
* @param Command 要写入的命令
* @retval 无
*/
void LCD_WriteCommand(unsigned char Command)
{
LCD_RS=0;
LCD_RW=0;
LCD_DataPort=Command;
LCD_EN=1;
LCD_Delay();
LCD_EN=0;
LCD_Delay();
}
/**
* @brief LCD1602写数据
* @param Data 要写入的数据
* @retval 无
*/
void LCD_WriteData(unsigned char Data)
{
LCD_RS=1;
LCD_RW=0;
LCD_DataPort=Data;
LCD_EN=1;
LCD_Delay();
LCD_EN=0;
LCD_Delay();
}
/**
* @brief LCD1602设置光标位置
* @param Line 行位置,范围:1~2
* @param Column 列位置,范围:1~16
* @retval 无
*/
void LCD_SetCursor(unsigned char Line,unsigned char Column)
{
if(Line==1)
{
LCD_WriteCommand(0x80|(Column-1));
}
else if(Line==2)
{
LCD_WriteCommand(0x80|(Column-1+0x40));
}
}
/**
* @brief LCD1602初始化函数
* @param 无
* @retval 无
*/
void LCD_Init()
{
LCD_WriteCommand(0x38);//八位数据接口,两行显示,5*7点阵
LCD_WriteCommand(0x0c);//显示开,光标关,闪烁关
LCD_WriteCommand(0x06);//数据读写操作后,光标自动加一,画面不动
LCD_WriteCommand(0x01);//光标复位,清屏
}
/**
* @brief 在LCD1602指定位置上显示一个字符
* @param Line 行位置,范围:1~2
* @param Column 列位置,范围:1~16
* @param Char 要显示的字符
* @retval 无
*/
void LCD_ShowChar(unsigned char Line,unsigned char Column,char Char)
{
LCD_SetCursor(Line,Column);
LCD_WriteData(Char);
}
/**
* @brief 在LCD1602指定位置开始显示所给字符串
* @param Line 起始行位置,范围:1~2
* @param Column 起始列位置,范围:1~16
* @param String 要显示的字符串
* @retval 无
*/
void LCD_ShowString(unsigned char Line,unsigned char Column,char *String)
{
unsigned char i;
LCD_SetCursor(Line,Column);
for(i=0;String[i]!='\0';i++)
{
LCD_WriteData(String[i]);
}
}
/**
* @brief 返回值=X的Y次方
*/
int LCD_Pow(int X,int Y)
{
unsigned char i;
int Result=1;
for(i=0;i<Y;i++)
{
Result*=X;
}
return Result;
}
/**
* @brief 在LCD1602指定位置开始显示所给数字
* @param Line 起始行位置,范围:1~2
* @param Column 起始列位置,范围:1~16
* @param Number 要显示的数字,范围:0~65535
* @param Length 要显示数字的长度,范围:1~5
* @retval 无
*/
void LCD_ShowNum(unsigned char Line,unsigned char Column,unsigned int Number,unsigned char Length)
{
unsigned char i;
LCD_SetCursor(Line,Column);
for(i=Length;i>0;i--)
{
LCD_WriteData(Number/LCD_Pow(10,i-1)%10+'0');
}
}
/**
* @brief 在LCD1602指定位置开始以有符号十进制显示所给数字
* @param Line 起始行位置,范围:1~2
* @param Column 起始列位置,范围:1~16
* @param Number 要显示的数字,范围:-32768~32767
* @param Length 要显示数字的长度,范围:1~5
* @retval 无
*/
void LCD_ShowSignedNum(unsigned char Line,unsigned char Column,int Number,unsigned char Length)
{
unsigned char i;
unsigned int Number1;
LCD_SetCursor(Line,Column);
if(Number>=0)
{
LCD_WriteData('+');
Number1=Number;
}
else
{
LCD_WriteData('-');
Number1=-Number;
}
for(i=Length;i>0;i--)
{
LCD_WriteData(Number1/LCD_Pow(10,i-1)%10+'0');
}
}
/**
* @brief 在LCD1602指定位置开始以十六进制显示所给数字
* @param Line 起始行位置,范围:1~2
* @param Column 起始列位置,范围:1~16
* @param Number 要显示的数字,范围:0~0xFFFF
* @param Length 要显示数字的长度,范围:1~4
* @retval 无
*/
void LCD_ShowHexNum(unsigned char Line,unsigned char Column,unsigned int Number,unsigned char Length)
{
unsigned char i,SingleNumber;
LCD_SetCursor(Line,Column);
for(i=Length;i>0;i--)
{
SingleNumber=Number/LCD_Pow(16,i-1)%16;
if(SingleNumber<10)
{
LCD_WriteData(SingleNumber+'0');
}
else
{
LCD_WriteData(SingleNumber-10+'A');
}
}
}
/**
* @brief 在LCD1602指定位置开始以二进制显示所给数字
* @param Line 起始行位置,范围:1~2
* @param Column 起始列位置,范围:1~16
* @param Number 要显示的数字,范围:0~1111 1111 1111 1111
* @param Length 要显示数字的长度,范围:1~16
* @retval 无
*/
void LCD_ShowBinNum(unsigned char Line,unsigned char Column,unsigned int Number,unsigned char Length)
{
unsigned char i;
LCD_SetCursor(Line,Column);
for(i=Length;i>0;i--)
{
LCD_WriteData(Number/LCD_Pow(2,i-1)%2+'0');
}
}
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