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这是主要程序： 按指定位置显示一个字符，怎样修改才能 显示正常数字 - //写数据
- void WriteDataLCD(unsigned char WDLCD)
- {
- ReadStatusLCD(); //检测忙
- LCD_RS = 1;
- LCD_RW = 0;
- LCD_Data = WDLCD;
- LCD_E = 1;
- LCD_E = 1;
- LCD_E = 1;
- LCD_E = 0;
- }
- //写指令
- void WriteCommandLCD(unsigned char WCLCD,BuysC) //BuysC为0时忽略忙检测
- {
- if (BuysC) ReadStatusLCD(); //根据需要检测忙
- LCD_RS = 0;
- LCD_RW = 0;
- LCD_Data = WCLCD;
- LCD_E = 1;
- LCD_E = 1;
- LCD_E = 1;
- LCD_E = 0;
- }
- //读数据
- unsigned char ReadDataLCD(void)
- {
- LCD_RS = 1;
- LCD_RW = 1;
- LCD_E = 0;
- LCD_E = 0;
- LCD_E = 1;
- return(LCD_Data);
- }
- //读状态
- unsigned char ReadStatusLCD(void)
- {
- LCD_Data = 0xFF;
- LCD_RS = 0;
- LCD_RW = 1;
- LCD_E = 1;
- while (LCD_Data & Busy); //检测忙信号
- LCD_E = 0;
- return(LCD_Data);
- }
- void LCDInit(void) //LCM初始化
- {
- WriteCommandLCD(0x30,1); //显示模式设置,开始要求每次检测忙信号
- WriteCommandLCD(0x01,1); //显示清屏
- WriteCommandLCD(0x06,1); // 显示光标移动设置
- WriteCommandLCD(0x0C,1); // 显示开及光标设置
- }
- void LCDClear(void) //清屏
- {
- WriteCommandLCD(0x01,1); //显示清屏
- WriteCommandLCD(0x34,1); // 显示光标移动设置
- WriteCommandLCD(0x30,1); // 显示开及光标设置
- }
- //按指定位置显示一个字符
- void DisplayOneChar(unsigned char X, unsigned char Y, unsigned char DData)
- {
- if(Y<1)
- Y=1;
- if(Y>4)
- Y=4;
- X &= 0x0F; //限制X不能大于16，Y不能大于1
- switch(Y){
- case 1:X|=0X80;break;
- case 2:X|=0X90;break;
- case 3:X|=0X88;break;
- case 4:X|=0X98;break;
- }
- WriteCommandLCD(X, 0); //这里不检测忙信号，发送地址码
- WriteDataLCD(DData);
- }
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