/******************************************************************* AT89C51单片机驱动128x64液晶显示C语言 ****************************************************************/ #include<AT89x51.h> #define uchar unsigned char /***************************************** 电路连接 P1------0～DB7 P2.0------RS P2.1------RW P2.2------E *****************************************/ #define _DB P1 #define uchar unsigned char #define uint unsigned int sbit LCD_RS=P2^0; sbit LCD_RW=P2^1; sbit LCD_E=P2^2; sbit cs1=P2^6; sbit cs2=P2^7; uchar code kk[] = { //"陕", 0xFE,0x82,0x1A,0xE6,0x4C,0x74,0x44,0xFF, 0x64,0x5C,0x46,0x44,0x0F,0x00,0x01,0x08, 0x08,0x04,0x03,0x00,0x01,0x02,0x04,0x08}; uchar code xi[]={//"西", 0x02,0xFA,0x0A,0x8A,0x7E,0x0A,0x0A,0xFE, 0x8A,0x8A,0xFB,0x02,0x00,0x0F,0x05,0x04, 0x04,0x04,0x04,0x04,0x04,0x04,0x0F,0x00}; uchar code dian[]={//"电", 0x00,0xFC,0x24,0x24,0x24,0xFF,0x24,0x24, 0x24,0xFE,0x04,0x00,0x00,0x01,0x01,0x01, 0x01,0x07,0x09,0x09,0x09,0x09,0x08,0x0E}; uchar code zi[]={//"子", 0x00,0x20,0x21,0x21,0x21,0x21,0xF9,0x25, 0x23,0x21,0x30,0x20,0x00,0x00,0x00,0x04, 0x08,0x08,0x0F,0x00,0x00,0x00,0x00,0x00}; uchar code ke[]={//"科", 0x8A,0x4A,0xFF,0x29,0x49,0x08,0x22,0xCC, 0x80,0xFF,0x40,0x40,0x01,0x00,0x0F,0x00, 0x00,0x01,0x01,0x00,0x00,0x0F,0x00,0x00}; uchar code ji[]={//"技", 0x48,0x48,0xFF,0x28,0x28,0x64,0xA4,0x3F, 0xA4,0x64,0x26,0x04,0x04,0x08,0x07,0x08, 0x08,0x04,0x02,0x01,0x02,0x04,0x08,0x08}; uchar code xue[]={ //"学", 0x20,0x18,0x29,0x2E,0x28,0xA9,0xAE,0x68, 0x2C,0x0B,0x98,0x08,0x01,0x01,0x01,0x01, 0x05,0x09,0x0F,0x01,0x01,0x01,0x01,0x01}; uchar code yuan[]={//"院", 0xFE,0x02,0x1A,0xE6,0x48,0x54,0xD4,0x55, 0xD6,0x54,0x54,0x4C,0x0F,0x01,0x02,0x09, 0x08,0x04,0x03,0x00,0x07,0x08,0x08,0x0E}; uchar code yu[]={//"余", 0x20,0x50,0x48,0x54,0x52,0xF1,0x52,0xD4, 0x48,0x50,0x60,0x20,0x08,0x04,0x02,0x05, 0x08,0x0F,0x00,0x00,0x01,0x02,0x04,0x08}; uchar code lao[]={//"老", 0x10,0x14,0x14,0x94,0x94,0x5F,0x34,0x9C, 0x94,0x12,0x18,0x10,0x02,0x02,0x01,0x00, 0x07,0x09,0x09,0x08,0x08,0x08,0x0E,0x00}; uchar code shi[]={//"师", 0x00,0xFC,0x00,0xFF,0x00,0xFA,0x0A,0x0A, 0xFE,0x0A,0x0B,0xFA,0x00,0x09,0x04,0x03, 0x00,0x03,0x00,0x00,0x0F,0x00,0x02,0x03}; /******定义函数****************/ void LCD_init(void);//声明初始化函数 void LCD_write_command(uchar command);//写指令函数 void LCD_write_data(uchar dat);//写数据函数 void LCD_disp_char(uchar x,uchar y,uchar dat);//在某个屏幕位置上显示一 //个字符,X（0-16),y(1-2) //void LCD_check_busy(void);//检查忙函数。我没用到此函数，因为通过率极低。 void delay(uint n);//延时函数 //******************************** //*******初始化函数*************** void LCD_init(void) { LCD_write_command(0x38);//设置8位格式，2行，5x7 LCD_write_command(0x0c);//整体显示，关光标，不闪烁 LCD_write_command(0x06);//设定输入方式，增量不移位-------------- LCD_write_command(0x01);//清除屏幕显示---------------- delay(100);//实践证明，我的LCD1602上，用for 循环200 次就能可靠完成清屏指令。 } //******************************** //********写指令函数***********设置先向1602写入的数据为地址* void LCD_write_command(uchar dat) { LCD_DB=dat; LCD_RS=0;//指令 LCD_RW=0;//写入 LCD_E=1;//允许 LCD_E=0;//产生下降沿 delay(1);//实践证明，我的LCD1602 上，用for 循环1 次就能完成普通写指令。 } //******************************* //********再写数据函数*****向1602中写入数据******** void LCD_write_data(uchar dat) { LCD_RS=1; //RS置1 (运算后P5=xxx1 xxxx,即RS=1其他位状态不变） LCD_RW=0; //RW清0 (运算后P5=xx0x xxxx, 即RW=0其他位状态不变) LCD_E=1; //使能E清0 (运算后P5=xxxx 0xxx, 即E=0其他位状态不变) P1 = dat; //送数据到P2OUT准备输出进入1602，等E下降沿来即可进入1602. LCD_E=1; //使能E置1，P5OUT= xxxx xxxx+0000 1000=xxxx1xxx，E=1. delay(10); LCD_E=0; //使能E清0，这样E从1变0，产生一个下降,写入命令到1602。 }
//*******显示一个字符函数********* void LCD_disp_char(uchar x,uchar y,uchar dat) { if(y>=64) { y=y-1; } LCD_write_command(0x40|y); delay(10); LCD_write_command(0xb8|x); LCD_write_data(dat); } //******************************** /*******检查忙函数************* voidLCD_check_busy() //实践证明，在我的LCD1602 上，检查忙指令通 过率极低，以至于不能正常使用LCD。因此我没有再用检查忙函数。而使 do//用了延时的方法，延时还是非常好用的。我试了一下，用// {LCD_E=0; //for 循环作延时，普通指令只要1次循就可完成。清屏指令 LCD_RS=0; //要用200次循环便能完成。 LCD_RW=1; LCD_DB=0xff; LCD_E=1; while(LCD_DB^7==1); ｝ ******************************/ //********延时函数*************** void delay(uint n) { uint i; uchar j; for(i=n;i>0;i--) for(j=0;j<2;j++); //在这个延时循环函数中我只做了2次循环， } //实践证明我的LCD1602 上普 //通的指令只需1次循环就能可靠完成。 //******************************* //*********主函数***************** void main(void) { while(1) { uint i; LCD_init(); while(1) { for (i=0;i<12;i++)//陕字上半部 { cs1=1; cs2=0; LCD_disp_char(0,i+36+4,kk[i]);//加36是显示起始位置左移，因为一个汉字的宽度为12 delay(500); } for (i=12;i<24;i++)//陕字下半部 { cs1=1; cs2=0; LCD_disp_char(1,i+24+4,kk[i]); delay(500); } for (i=0;i<12;i++)//西上 { cs1=1; cs2=0; LCD_disp_char(0,i+48+4,xi[i]); delay(500); } for (i=12;i<24;i++)//西下 { cs1=1; cs2=0; LCD_disp_char(1,i+36+4,xi[i]); delay(500); } for (i=0;i<12;i++)//电上 { cs1=0; cs2=1; LCD_disp_char(0,i,~dian[i]); delay(500); } for (i=12;i<24;i++)//电下 { cs1=0; cs2=1; LCD_disp_char(1,i-12,~dian[i]); delay(500); } for (i=0;i<12;i++)//子上 { cs1=0; cs2=1; LCD_disp_char(0,i+12,~zi[i]); delay(500); } for (i=12;i<24;i++)//子下 { cs1=0; cs2=1; LCD_disp_char(1,i,~zi[i]); delay(500); } /**************************************/ for (i=0;i<12;i++)//ke上 { LCD_disp_char(0,i+24,~ke[i]); delay(500); } for (i=12;i<24;i++)//ke下 { LCD_disp_char(1,i+12,~ke[i]); delay(500); } for (i=0;i<12;i++)//ji上 { cs1=1; cs2=0; LCD_disp_char(3,i+48+4,ji[i]); delay(500); } for (i=12;i<24;i++)//ji下 { LCD_disp_char(4,i+36+4,ji[i]); delay(500); } for (i=0;i<12;i++)//xue上 { cs1=0; cs2=1; LCD_disp_char(3,i+24-24,~xue[i]); delay(500); } for (i=12;i<24;i++)//xue下 { LCD_disp_char(4,i+12-24,~xue[i]); delay(500); } for (i=0;i<12;i++)//yuan上 { cs1=0; cs2=1; LCD_disp_char(3,i+36-24,yuan[i]); delay(500); } for (i=12;i<24;i++)//下 { LCD_disp_char(4,i+24-24,yuan[i]); delay(500); } for (i=0;i<12;i++)//yu上 { cs1=1; cs2=0; LCD_disp_char(6,i+48+4,~yu[i]); delay(500); } for (i=12;i<24;i++)//yu下 { LCD_disp_char(7,i-12+48+4,~yu[i]); delay(500); } for (i=0;i<12;i++)//老上 { cs1=0; cs2=1; LCD_disp_char(6,i,~lao[i]); delay(500); } for (i=12;i<24;i++)//老下 { LCD_disp_char(7,i-12,~lao[i]); delay(500); } for (i=0;i<12;i++)//shi上 { cs1=0; cs2=1; LCD_disp_char(6,i+24-12,~shi[i]); delay(500); } for (i=12;i<24;i++)//shi下 { LCD_disp_char(7,i-12+24-12,~shi[i]); delay(500); }<