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/*-----------------------------------------------
名稱：LCD1602
修改：無
內容：
引腳定義如下：1-VSS 2-VDD 3-V0 4-RS 5-R/W 6-E 7-14 DB0-DB7 15-BLA 16-BLK
------------------------------------------------*/
/*------------------------------------------------
寫入字符函數
------------------------------------------------*/
/* void LCD_Write_Char(unsigned char x,unsigned char y,unsigned char Data)
{
if (y == 0)
{
LCD_Write_Com(0x80 + x);
}
else
{
LCD_Write_Com(0xC0 + x);
}
LCD_Write_Data( Data);
}*/
/*------------------------------------------------
初始化函數
------------------------------------------------*/
#include<reg52.h>
#include<intrins.h>
#include<stdio.h>
#define CHECK_BUSY
sbit RS = P2^4; //定義端口
sbit RW = P2^5;
sbit EN = P2^6;
sbit key1=P1^0; //VIP 按鍵
sbit key2=P1^1; //普通按鍵
sbit key3=P1^2; //對公按鍵
sbit key4=P1^3; //業務選擇按鍵
float num0,num1,num2;
int num3;
#define RS_CLR RS=0
#define RS_SET RS=1
#define RW_CLR RW=0
#define RW_SET RW=1
#define EN_CLR EN=0
#define EN_SET EN=1
#define DataPort P0
void DelayUs2x(unsigned char t)
{
while(--t);
}
/*------------------------------------------------
mS延時函數，含有輸入參數 unsigned char t，無返回值
unsigned char 是定義無符號字符變量，其值的范圍是
0~255 這里使用晶振12M，精確延時請使用匯編
------------------------------------------------*/
void DelayMs(unsigned char t)
{
while(t--)
{
//大致延時1mS
DelayUs2x(245);
DelayUs2x(245);
}
}
/*------------------------------------------------
判忙函數
------------------------------------------------*/
bit LCD_Check_Busy(void)
{
#ifdef CHECK_BUSY
DataPort= 0xFF;
RS_CLR;
RW_SET;
EN_CLR;
_nop_();
EN_SET;
return (bit)(DataPort & 0x80);
#else
return 0;
#endif
}
/*------------------------------------------------
寫入命令函數
------------------------------------------------*/
void LCD_Write_Com(unsigned char com)
{
// while(LCD_Check_Busy()); //忙則等待
DelayMs(5);
RS_CLR;
RW_CLR;
EN_SET;
DataPort= com;
_nop_();
EN_CLR;
}
/*------------------------------------------------
寫入數據函數
------------------------------------------------*/
void LCD_Write_Data(unsigned char Data)
{
//while(LCD_Check_Busy()); //忙則等待
DelayMs(5);
RS_SET;
RW_CLR;
EN_SET;
DataPort= Data;
_nop_();
EN_CLR;
}
/*------------------------------------------------
清屏函數
------------------------------------------------*/
void LCD_Clear(void)
{
LCD_Write_Com(0x01);
DelayMs(5);
}
/*------------------------------------------------
寫入字符串函數
------------------------------------------------*/
void LCD_Write_String(unsigned char x,unsigned char y,unsigned char *s)
{
if (y == 0)
{
LCD_Write_Com(0x80 + x); //表示第一行
}
else
{
LCD_Write_Com(0xC0 + x); //表示第二行
}
while (*s)
{
LCD_Write_Data( *s);
s ++;
}
}
void LCD_Init(void)
{
LCD_Write_Com(0x38); /*顯示模式設置*/
DelayMs(5);
LCD_Write_Com(0x38);
DelayMs(5);
LCD_Write_Com(0x38);
DelayMs(5);
LCD_Write_Com(0x38);
LCD_Write_Com(0x08); /*顯示關閉*/
LCD_Write_Com(0x01); /*顯示清屏*/
LCD_Write_Com(0x06); /*顯示光標移動設置*/
DelayMs(5);
LCD_Write_Com(0x0C); /*顯示開及光標設置*/
}
void VIPdisplay()
{
char displaytemp[16];//定義顯示區域臨時存儲數組
if(key1==0)
{
DelayMs(20);
if(key1==0)
{
num0=num0+1;
LCD_Write_String(0,0,"window1");
sprintf(displaytemp,"VIP % 7.0f ",num0);//打印數值
LCD_Write_String(0,1,displaytemp);//顯示第二行
}
if(num0==100)
{
LCD_Write_String(0,0,"Please wait!");
num0=0;
}
while(!key1);
DelayMs(20);
while(!key1);
}
}
void PUdisplay()
{
char displaytemp[16];//定義顯示區域臨時存儲數組
if(key2==0)
{
DelayMs(20);
if(key2==0)
{
num1=num1+1;
LCD_Write_String(0,0,"window2");
sprintf(displaytemp,"general % 7.0f",num1);//打印數值
LCD_Write_String(0,1,displaytemp);//顯示第二行
}
if(num1==100)
{
LCD_Write_String(0,0,"Please wait!");
num1=0;
}
while(!key2);
DelayMs(20);
while(!key2);
}
}
void Dgdisplay()
{
char displaytemp[16];//定義顯示區域臨時存儲數組
if(key3==0)
{
DelayMs(20);
if(key3==0)
{
num2=num2+1;
LCD_Write_String(0,0,"window3");
sprintf(displaytemp,"public % 7.0f",num2);//打印數值
LCD_Write_String(0,1,displaytemp);//顯示第二行
}
if(num2==100)
{
LCD_Write_String(0,0,"Please wait!");
num2=0;
}
while(!key3);
DelayMs(20);
while(!key3);
……………………
…………限于本文篇幅余下代碼請從51黑下載附件…………

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