LCD.rar_LCD字符串程序

/*==============================================================*/ /*※※※※※※※※※※※※※系统主文※※※※※※※※※※※※※※*/ /*==============================================================*/ #include <at89x51.h> ///////////////////////////////// #define LCM_RS P2_2 #define LCM_RW P2_1 //定义LCD引脚 #define LCM_E P2_0 #define LCM_Data P0 //////////////////////////////// #define Busy 0x80 //用检测LCM状态 #define uchar unsigned char void WriteDataLCM(unsigned char WDLCM);// void WriteCommandLCM(unsigned char WCLCM,BuysC);// unsigned char ReadDataLCM(void);// unsigned char ReadStatusLCM(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 display(uchar sec,uchar min,uchar hrs,uchar dte,uchar mon,uchar day,uchar yr);// void LCMInit(void);// void Delay5Ms(void);// void Delay400Ms(void);// void disp_clk_regs(void); void Locatexy(char x,char y);// ////////////////////////////////////////////////// void main(void) //主函数显示 I love you zwj { Delay400Ms(); //启动等待，等LCM讲入工作状态 LCMInit(); //LCM初始化 Delay5Ms(); DisplayListChar(0,0, "hello!world!" ); //显示 I love you zwj while(1); //使程序停止在这，防止LCD出现闪动 zwj } //写数据////////////////////////////////////////////////////////////////////////////////// void WriteDataLCM(unsigned char WDLCM)// { ReadStatusLCM(); //检测忙 LCM_Data = WDLCM; LCM_RS = 1; LCM_RW = 0; LCM_E = 0; //若晶振速度太高可以在这后加小的延时 LCM_E = 0; //延时 LCM_E = 1; } //写指令/////////////////////////////////////////////////////////////////////////////////// void WriteCommandLCM(unsigned char WCLCM,BuysC) //BuysC为0时忽略忙检测// { if (BuysC) ReadStatusLCM(); //根据需要检测忙 LCM_Data = WCLCM; LCM_RS =0; LCM_RW =0; LCM_E = 0; LCM_E = 0; LCM_E = 1; } ///////////////////////读数据////////////////////////////////////////////////////////////// unsigned char ReadDataLCM(void)// { LCM_RS = 1; LCM_RW = 1; LCM_E = 0; LCM_E = 0; LCM_E = 1; return(LCM_Data); } ////////////////////////读状态./////////////////////////////////////////// unsigned char ReadStatusLCM(void)// { LCM_Data = 0xFF; LCM_RS = 0; LCM_RW = 1; LCM_E = 0; LCM_E = 0; LCM_E = 1; while (LCM_Data & Busy); //检测忙信号 return(LCM_Data); } ///////////////////////&&&LCM初始化&&&///////////////////////////////////// void LCMInit(void) // { LCM_Data = 0; WriteCommandLCM(0x38,0); //三次显示模式设置，不检测忙信号 Delay5Ms(); WriteCommandLCM(0x38,0); Delay5Ms(); WriteCommandLCM(0x38,0); Delay5Ms(); WriteCommandLCM(0x38,1); //显示模式设置,开始要求每次检测忙信号 WriteCommandLCM(0x08,1); //关闭显示 WriteCommandLCM(0x01,1); //显示清屏 WriteCommandLCM(0x06,1); // 显示光标移动设置 WriteCommandLCM(0x0f,1); // 显示开及光标设置 } /////////////////////////确定光标位置////////////////////////////////////////// void Locatexy(char x,char y)// { char temp; temp=x&0xf; y&=0x1; if(y) temp|=0x40; temp|=0x80; WriteCommandLCM(temp,0); } ////////////////////////按指定位置显示一个字符////////////////////////////////// void DisplayOneChar(unsigned char X, unsigned char Y, unsigned char DData)// { Y &= 0x1; X &= 0xF; //X不能大于15，Y不能大于1 if (Y) X |= 0x40; //显示第二行地址码+0x40; X |= 0x80; //算出指令码 WriteCommandLCM(X, 0); //不检测忙信号，发送地址码 WriteDataLCM(DData); } ///////////////////////按指定位置显示一串字符//////////////////////////////////// void DisplayListChar(unsigned char X, unsigned char Y, unsigned char code *DData)// { unsigned char ListLength; ListLength = 0; Y &= 0x1; X &= 0xF; //X不能大于15，Y不能大于1 while (DData[ListLength]>0x20) //若到达字串尾则退出 { if (X <= 0xF) //X小于0xF { DisplayOneChar(X, Y, DData[ListLength]); //显示单个字符 ListLength++; X++; } } } //////////////////////5ms延时//////////////////////////////////////////////////// void Delay5Ms(void)// { unsigned int TempCyc = 3552; while(TempCyc--); } //////////////////////////400ms延时////////////////////////////////////////////// void Delay400Ms(void)// { unsigned char TempCycA = 5; unsigned int TempCycB; while(TempCycA--) { TempCycB=5269; while(TempCycB--); }; }