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標題: 單片機數字電壓表程序 [打印本頁]

作者: xiaolouluo    時間: 2019-12-11 10:57
標題: 單片機數字電壓表程序
本帖最后由 xiaolouluo 于 2019-12-18 09:48 編輯

#include<reg52.h>
#define LCD_DB  P2     
sbit LCD_RS = P1^0;
sbit LCD_RW = P1^1;
sbit LCD_EN = P1^2;
sbit AD_OE=P3^1;        
sbit AD_EOC=P3^2;
sbit AD_A=P3^4;
sbit AD_B=P3^5;
sbit AD_C=P3^6;
sbit AD_START=P3^0;
unsigned char sj,ai;
int AD_sj=0,AD_ai=0;
        
unsigned char Zh1[]="voltmeter";
unsigned char Zh2[]="voltage:        ";


void Busy()                 //檢忙
{
    unsigned char sta;      
    LCD_DB = 0xff;
    LCD_RS = 0;
    LCD_RW = 1;
    do
    {
    LCD_EN = 1;
    sta = LCD_DB;
    LCD_EN = 0;   
    }
    while(sta&0x80);
}

void Lcd_Write_Cmd(unsigned char cmd)      //命令
{
    Busy();
    LCD_RS = 0;
    LCD_RW = 0;
    LCD_DB = cmd;
    LCD_EN = 1;
    LCD_EN = 0;   
}

void Lcd_Write_Data(unsigned char dat)     //數據
{
    Busy();
    LCD_RS = 1;
    LCD_RW = 0;
    LCD_DB = dat;
    LCD_EN = 1;
    LCD_EN = 0;
}
void InitLcd()                            //初始化
{
    Lcd_Write_Cmd(0x38);   
    Lcd_Write_Cmd(0x08);
    Lcd_Write_Cmd(0x01);
    Lcd_Write_Cmd(0x06);
    Lcd_Write_Cmd(0x0c);     
}
void LcdSetCursor(unsigned char x,unsigned char y)   //坐標
{
    unsigned char addr;
    if(y == 0)
        addr = 0x00 + x;
    else
        addr = 0x40 + x;

    Lcd_Write_Cmd(addr|0X80);
}

void LcdShowStr(unsigned char x,unsigned char y,unsigned char *s)  //字符串   
{
    LcdSetCursor(x,y);     
    while(*s)
    {
        Lcd_Write_Data(*s);
        s++;
    }
}

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