|
|
- #include <reg51.h>
- #include <intrins.h>
- //#include <at89x51.h>
- sbit LCD_RS=P1^0;//定義引腳
- sbit LCD_RW=P1^1;
- sbit LCD_E=P1^2;
- #define LCD_Data P2
- #define Busy 0x80 //用于檢測LCD狀態字中的Busy標識
- void WriteDataLCD(unsigned char WDLCD);
- void WriteCommandLCD(unsigned char WCLCD,BuysC);
- unsigned char ReadDataLCD(void);
- unsigned char ReadStatusLCD(void);
- void LCDInit(void);
- void DisplayOneChar(unsigned char X, unsigned char Y, unsigned char DData);
- void DisplayListChar(unsigned char X, unsigned char Y, unsigned char code *DData);
- void Delay5Ms(void);
- void Delay400Ms(void);
- unsigned char code uctech[] = {"ic2012.taobao.co"};
- unsigned char code net[] = {"Happy every day!"};
- void main(void)
- {
- Delay400Ms(); //啟動等待，等LCD講入工作狀態
- LCDInit(); //LCM初始化
- Delay5Ms(); //延時片刻(可不要)
- DisplayListChar(0, 0, uctech);
- DisplayListChar(0, 5, net);
- ReadDataLCD();//測試用句無意義
- while(1);
- }
- //寫數據
- void WriteDataLCD(unsigned char WDLCD)
- {
- ReadStatusLCD(); //檢測忙
- LCD_Data = WDLCD;
- LCD_RS = 1;
- LCD_RW = 0;
- LCD_E = 0; //若晶振速度太高可以在這后加小的延時
- LCD_E = 0; //延時
- LCD_E = 1;
- }
- //寫指令
- void WriteCommandLCD(unsigned char WCLCD,BuysC) //BuysC為0時忽略忙檢測
- {
- if (BuysC) ReadStatusLCD(); //根據需要檢測忙
- LCD_Data = WCLCD;
- LCD_RS = 0;
- LCD_RW = 0;
- LCD_E = 0;
- LCD_E = 0;
- LCD_E = 1;
- }
- //讀數據
- unsigned char ReadDataLCD(void)
- {
- LCD_RS = 1;
- LCD_RW = 1;
- LCD_E = 0;
- LCD_E = 0;
- LCD_E = 1;
- return(LCD_Data);
- }
- //讀狀態
- unsigned char ReadStatusLCD(void)
- {
- LCD_Data = 0xFF;
- LCD_RS = 0;
- LCD_RW = 1;
- LCD_E = 0;
- LCD_E = 0;
- LCD_E = 1;
- while (LCD_Data & Busy); //檢測忙信號
- return(LCD_Data);
- }
- void LCDInit(void) //LCM初始化
- {
- LCD_Data = 0;
- WriteCommandLCD(0x38,0); //三次顯示模式設置，不檢測忙信號
- Delay5Ms();
- WriteCommandLCD(0x38,0);
- Delay5Ms();
- WriteCommandLCD(0x38,0);
- Delay5Ms();
- WriteCommandLCD(0x38,1); //顯示模式設置,開始要求每次檢測忙信號
- WriteCommandLCD(0x08,1); //關閉顯示
- WriteCommandLCD(0x01,1); //顯示清屏
- WriteCommandLCD(0x06,1); // 顯示光標移動設置
- WriteCommandLCD(0x0C,1); // 顯示開及光標設置
- }
- //按指定位置顯示一個字符
- void DisplayOneChar(unsigned char X, unsigned char Y, unsigned char DData)
- {
- Y &= 0x1;
- X &= 0xF; //限制X不能大于15，Y不能大于1
- if (Y) X |= 0x40; //當要顯示第二行時地址碼+0x40;
- X |= 0x80; // 算出指令碼
- WriteCommandLCD(X, 0); //這里不檢測忙信號，發送地址碼
- WriteDataLCD(DData);
- }
- //按指定位置顯示一串字符
- void DisplayListChar(unsigned char X, unsigned char Y, unsigned char code *DData)
- {
- unsigned char ListLength;
- ListLength = 0;
- Y &= 0x1;
- X &= 0xF; //限制X不能大于15，Y不能大于1
- while (DData[ListLength]>=0x20) //若到達字串尾則退出
- {
- if (X <= 0xF) //X坐標應小于0xF
- {
- DisplayOneChar(X, Y, DData[ListLength]); //顯示單個字符
- ListLength++;
- X++;
- }
- }
- }
- //5ms延時
- void Delay5Ms(void)
- {
- unsigned int TempCyc = 5552;
- while(TempCyc--);
- }
- //400ms延時
- void Delay400Ms(void)
- {
- unsigned char TempCycA = 5;
- unsigned int TempCycB;
- while(TempCycA--)
- {
- TempCycB=7269;
- while(TempCycB--);
- };
- }
|
|
QQ好友和群
QQ空間
騰訊微博
騰訊朋友
收藏
淘帖
頂
踩
