LCD1602显汉字

//================================================================== =================== //延时程序 //================================================================== =================== void Delay5Ms(void) { unsigned long int TempCyc = 5552; while(TempCyc--); } void Delay400Ms(void) { unsigned char TempCycA = 5; unsigned int TempCycB; while(TempCycA--) { TempCycB=7269; while(TempCycB--); };
}
//================================================================== =================== //读写子程序 //================================================================== =================== //读数据 unsigned char ReadDataLCM(void) { LCM_RS = 1; LCM_RW = 1; LCM_E = 1; LCM_E = 0; for(i=0;i<100;i++); LCM_E = 1; return(LCM_Data); } //读状态 unsigned char ReadStatusLCM(void) { LCM_Data = 0xFF; LCM_RS = 0; LCM_RW = 1; LCM_E = 1; LCM_E = 0; for(i=0;i<100;i++); LCM_E = 1; //while (LCM_Data & Busy); //检测忙信号 return(LCM_Data); } //写数据 void WriteDataLCM(unsigned char WDLCM) { ReadStatusLCM(); //检测忙 LCM_Data = WDLCM; LCM_RS = 1; LCM_RW = 0; LCM_E = 1; LCM_E = 0; //若晶振速度太高可以在这后加小的延时 for(i=0;i<100;i++);//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 = 1; LCM_E = 0; for(i=0;i<100;i++); LCM_E = 1; } //================================================================== =================== //初始化子程序 //================================================================== =================== void LCMInit(void) //LCM 初始化 { 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 Delay5Ms(); WriteCommandLCM(0x08,1); // 关闭显示 Delay5Ms(); WriteCommandLCM(0x01,1); // 清屏 Delay5Ms(); WriteCommandLCM(0x06,1); // 显示光标移动设置 Delay5Ms(); WriteCommandLCM(0x0c,1); // 显示开及光标设置 Delay5Ms(); }
} //================================================================== =================== //显示自定义字符 //void mychar(char xx,char yy,unsigned char *character,unsigned char saveto) //说明:xx(0-15):为 x 参数.yy(0-1):y 参数.character:要显示的字符的列表 地址,在程序前面有定义 //saveto(1-7)为字符保存的 RAM，每屏最多显示 7 个自定义字符 //(0x00-0x0h 是自定义字符) //================================================================== =================== void mychar(char xx,char yy,unsigned char *character,unsigned char saveto) { unsigned char add = (saveto<<3) | 0x40; unsigned char t; //临时变量，每一行的值 /* t=*(character+0); WriteCommandLCM(add, 0); WriteDataLCM(t); t=*(character+1); WriteCommandLCM(add+1, 0); WriteDataLCM(t); t=*(character+2); WriteCommandLCM(add+2, 0); WriteDataLCM(t); t=*(character+3); WriteCommandLCM(add+3, 0); WriteDataLCM(t); t=*(character+4); WriteCommandLCM(add+4, 0); WriteDataLCM(t); t=*(character+5); WriteCommandLCM(add+5, 0); WriteDataLCM(t); t=*(character+6); WriteCommandLCM(add+6, 0); WriteDataLCM(t); t=*(character+7);
sbit LCM_RS=P2^0; sbit LCM_RW=P2^1; sbit LCM_E=P2^4; int i,j;
//寄存器选择 //读/写控制 //读/写使能
//自定义字符列表 //================================================================== =================== unsigned char character0[8] = {0x08,0x0f,0x12,0x0f,0x0a,0x1f,0x02,0x02}, //年 character1[8] = {0x0f,0x09,0x0f,0x09,0x0f,0x09,0x0b,0x11}, // 月 character2[8] = {0x0f,0x09,0x09,0x09,0x0f,0x09,0x09,0x0f}, // 日 characterN[8] = {0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00}; // 日 //================================================================== ===================
//================================================================== =================== //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; //限制 X 不能大于 15，Y 不能大于 1 if (Y) X |= 0x40; //当要显示第二行时地址码+0x40; X |= 0x80; //算出指令码 WriteCommandLCM(X, 0); //这里不检测忙信号，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) //说明: x(0-15):x 参数 y(0-1):y 参数 DData(字符串):要显示的内容(英文、 数字、符号) //================================================================== =================== void DisplayListChar(unsigned char X, unsigned char Y, unsigned char code *DData) { unsigned char ListLength,j; ListLength = strlen(DData); Y &= 0x1; X &= 0xF; //限制 X 不能大于 15，Y 不能大于 1 if (X <= 0xF) //X 坐标应小于 0xF { for(j=0;j<ListLength;j++) { DisplayOneChar(X, Y, DData[j]); //显示单个字 符 X++; } }