LCD显示计算器键盘按键（带源程序+电路图）

#include <reg51.h> #include <intrins.h> #define uchar unsigned char #define uint unsigned int //定义在DotMatrix.c中的点阵、数字、符号等编码 extern uchar code Word_String[][32]; extern uchar code Keyboard_Chars[][16]; extern uchar code KeyPosTable[]; //KeyPad.c中的键盘扫描函数 extern uchar KeyScan(); //定义在LCD_12864.c中的相关液晶显示函数 void LCD_Initialize(); void Display_A_Char(uchar,uchar,uchar *); void Display_A_WORD(uchar,uchar,uchar *); void Display_A_WORD_String(uchar,uchar,uchar,uchar *); //键盘开启标志，其值由外部中断0控制 bit KeyPressDown=0; uchar T_Count=0; sbit SPK=P3^7; //蜂鸣器发声// void Beep() { uchar i,x=20; while(x--) { for(i=0; i<120; i++); SPK=~SPK; }} //主程序// void main() { uchar i; LCD_Initialize(); //初始化LCD for(i=0; i<7; i++) //从第一页开始，左边距16点，显示7个16*16点阵的中文提示信息 Display_A_WORD_String(1,16*(i+1),1,Word_String[i]); P1=0x0F; IE=0x83; //允许外部0和定时器0中断 IT0=1; //设为下降沿中断方式，外部中断0用于启停键盘扫描处理 TH0=(65536-50000)/256; //50ms定时 TL0=(65536-50000)%256; while(1) { //如果有按键按下则处理按键 if(KeyPressDown==1) { Beep(); KeyPressDown=0; Display_A_Char(4,55,Keyboard_Chars[KeyPosTable[KeyScan()]]); TR0=0; }}} //外部中断0控制消抖延时// void EX0_INT() interrupt 0 { TR0=1; //开启定时器0，延时300ms消抖 } //定时器0用于消抖并确认有键按下，启动主程序中的按键扫描 // void T0_INT() interrupt 1 { if(++T_Count==6) //50*6=300ms 延时抖动 { T_Count=0; KeyPressDown=1; } TH0=(65536-50000)/256; //50ms定时 TL0=(65536-50000)%256; } ///LCD_12864.c // //名称：12864LCD显示驱动软件// #include <reg51.h> #include <intrins.h> #define uchar unsigned char #define uint unsigned int #define LCD_DB_PORT P0 //液晶DB0~DB7 #define LCD_START_ROW 0xC0 //起始行 #define LCD_PAGE 0xB8 //页指令 #define LCD_COL 0x40 //列指令 //液晶引脚定义 sbit DI=P2^0; sbit RW=P2^1; sbit E=P2^2; sbit CS1=P2^3; sbit CS2=P2^4; sbit RST=P2^5; //检查LCD是否忙 // bit LCD_Check_Busy() { LCD_DB_PORT=0xFF; RW=1;_nop_();DI=0; E=1; _nop_(); E=0; return (bit)(P0&0x80); } //向LCD发送命令// void LCD_Write_Command(uchar c) { while(LCD_Check_Busy()); LCD_DB_PORT=0xFF; RW=0; _nop_(); DI=0; LCD_DB_PORT=c; E=1;_nop_(); E=0; } //向LCD发送数据// void LCD_Write_Data(uchar d) { while(LCD_Check_Busy()); LCD_DB_PORT=0xFF; RW=0; _nop_(); DI=1; LCD_DB_PORT=d; E=1; _nop_(); E=0; } //初始化LCD// void LCD_Initialize() { CS1=1; CS2=1; LCD_Write_Command(0x38); //8位形式，2行字符 LCD_Write_Command(0x0F); //开显示 LCD_Write_Command(0x01); //清屏 LCD_Write_Command(0x06); //画面不动光标右移 LCD_Write_Command(LCD_START_ROW); //设置起始行 } //通用显示函数，// // //从第P页第L列开始显示W字节数据，数据在r所指向的缓冲 //每字节8位是垂直显示的，高位在下，低位在上 //每个8*128的矩形区域为一页（每页分左半页与右半页） //整个LCD又由64*64的左半屏和右半屏构成 // void Common_Show(uchar P,uchar L,uchar W,uchar *r) { uchar i; if(L<64) //显示在左半屏或者左右半屏 { CS1=1; CS2=0; LCD_Write_Command(LCD_PAGE+P);//这里在指导书里有个“i9:” LCD_Write_Command(LCD_COL+L); if(L+W<64) //全部显示在左半屏 { for(i=0; i<W; i++) LCD_Write_Data(r[i]); } else //如果越界则跨越左右半屏显示 { for(i=0; i<64-L; i++) LCD_Write_Data(r[i]); //左半屏显示 CS1=0; CS2=1; //右半屏显示 LCD_Write_Command(LCD_PAGE+P); LCD_Write_Command(LCD_COL); for(i=64-L; i<W; i++) LCD_Write_Data(r[i]); }} else //全部显示在右半屏 { CS1=0; CS2=1; LCD_Write_Command( LCD_PAGE+P); LCD_Write_Command( LCD_COL+L-64); for( i=0; i<W;i++) LCD_Write_Data(r[i]); }} //显示一个8*16的点阵字符（字符上半部分与下半部分分别处在相邻两页中） void Display_A_Char(uchar P,uchar L,uchar *M) { Common_Show(P,L,8,M); Common_Show(P+1,L,8,M+8); } //显示一个16*16点阵汉子（汉字上半部分与下半部分分别处在相邻两页中） void Display_A_WORD(uchar P,uchar L,uchar *M) { Common_Show(P,L,16,M); //显示汉字上半部分 Common_Show(P+1,L,16,M+16); //显示汉字下半部分 } //显示一串16*16点阵汉字// void Display_A_WORD_String(uchar P,uchar L,uchar C,uchar *M) { uchar i; for(i=0; i<C; i++) Display_A_WORD(P,L+i*16,M+i*32); } // CotMAtrix.c// //相关的汉字与数字的点阵编码// #define uchar unsigned char #define uint unsigned int //中文提示（16*16点阵） uchar code Word_String[][32]= { /*-- 文字: 键 --*/ /*-- 宋体12; 此字体下对应的点阵为：宽x高=16x16 --*/ {0x40,0x30,0xEF,0x24,0x24,0x80,0xE4,0x9C,0x10,0x54,0x54,0xFF,0x54,0x7C,0x10,0x00, 0x01,0x01,0x7F,0x21,0x51,0x26,0x18,0x27,0x44,0x45,0x45,0x5F,0x45,0x45,0x44,0x00}, /*-- 文字: 盘 --*/ /*-- 宋体12; 此字体下对应的点阵为：宽x高=16x16 --*/ {0x20,0x20,0x20,0xFC,0x24,0x26,0xA5,0x2C,0x34,0x24,0x24,0xFC,0x20,0x20,0x20,0x00, 0x40,0x42,0x7D,0x44,0x44,0x7C,0x44,0x45,0x44,0x7D,0x46,0x45,0x7C,0x40,0x40,0x00}, /*-- 文字: 矩 --*/ /*-- 宋体12; 此字体下对应的点阵为：宽x高=16x16 --*/ {0x90,0x88,0x87,0xFC,0x84,0x84,0x80,0xFE,0x22,0x22,0x22,0x22,0x22,0xE2,0x02,0x00, 0x80,0x60,0x18,0x07,0x08,0x30,0x00,0x7F,0x44,0x44,0x44,0x44,0x44,0x47,0x40,0x00}, /*-- 文字: 阵 --*/ /*-- 宋体12; 此字体下对应的点阵为：宽x高=16x16 --*/ {0x00,0xFE,0x02,0x22,0xDA,0x06,0x08,0xC8,0xB8,0x8F,0xE8,0x88,0x88,0x88,0x08,0x00, 0x00,0xFF,0x08,0x10,0x08,0x07,0x08,0x08,0x08,0x08,0xFF,0x08,0x08,0x08,0x08,0x00}, /*-- 文字: 扫 --*/ /*-- 宋体12; 此字体下对应的点阵为：宽x高=16x16 --*/ {0x10,0x10,0x10,0xFF,0x10,0x90,0x04,0x84,0x84,0x84,0x84,0x84,0x84,0xFC,0x00,0x00, 0x04,0x44,0x82,0x7F,0x01,0x00,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x7F,0x00,0x00}, /*-- 文字: 描 --*/ /*-- 宋体12; 此字体下对应的点阵为：宽x高=16x16 --*/ {0x10,0x10,0x10,0xFF,0x10,0x90,0x04,0xC4,0x5F,0x44,0xC4,0x44,0x5F,0xC4,0x04,0x00, 0x04,0x44,0x82,0x7F,0x01,0x00,0x00,0xFF,0x44,0x44,0x7F,0x44,0x44,0xFF,0x00,0x00}, }; //键盘数字与符号点阵（8*16）点阵 uchar code Keyboard_Chars[][16]= { {0x00,0xE0,0x10,0x08,0x08,0x10,0xE0,0x00,0x00,0x0F,0x10,0x20,0x20,0x10,0x0F,0x00},//0 {0x00,0xE0,0x10,0x08,0x08,0x10,0xE0,0x00,0x00,0x0F,0x10,0x20,0x20,0x10,0x0F,0x00},//1 {0x00,0x10,0x10,0xF8,0x00,0x00,0x00,0x00,0x00,0x20,0x20,0x3F,0x20,0x20,0x00,0x00},//2 {0x00,0x70,0x08,0x08,0x08,0x88,0x70,0x00,0x00,0x30,0x28,0x24,0x22,0x21,0x30,0x00},//3 {0x00,0x30,0x08,0x88,0x88,0x48,0x30,0x00,0x00,0x18,0x20,0x20,0x20,0x11,0x0E,0x00},//4 {0x00,0x00,0xC0,0x20,0x10,0xF8,0x00,0x00,0x00,0x07,0x04,0x24,0x24,0x3F,0x24,0x00},//5 {0x00,0xF8,0x08,0x88,0x88,0x08,0x08,0x00,0x00,0x19,0x21,0x20,0x20,0x11,0x0E,0x00},//6 {0x00,0xE0,0x10,0x88,0x88,0x18,0x00,0x00,0x00,0x0F,0x11,0x20,0x20,0x11,0x0E,0x00},//7 {0x00,0x38,0x08,0x08,0xC8,0x38,0x08,0x00,0x00,0x00,0x00,0x3F,0x00,0x00,0x00,0x00},//8 {0x00,0x70,0x88,0x08,0x08,0x88,0x70,0x00,0x00,0x1C,0x22,0x21,0x21,0x22,0x1C,0x00},//9 {0x00,0x00,0x00,0x00,0x80,0x60,0x18,0x04,0x00,0x60,0x18,0x06,0x01,0x00,0x00,0x00},/// {0x40,0x40,0x80,0xF0,0x80,0x40,0x40,0x00,0x02,0x02,0x01,0x0F,0x01,0x02,0x02,0x00},//* {0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x01,0x01,0x1F,0x01,0x01,0x01,0x01},//- {0x00,0x00,0x00,0xF0,0x00,0x00,0x00,0x00,0x01,0x01,0x01,0x1F,0x01,0x01,0x01,0x00},//+ {0x40,0x40,0x40,0x40,0x40,0x40,0x40,0x00,0x04,0x04,0x04,0x04,0x04,0x04,0x04,0x00},//= {0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00}//Space }; //Keyboard_Chars中数字与符号编码与键盘键位对照表 uchar code KeyPosTable[]= { 7,8,9,10, 4,5,6,11, 1,2,3,12, 15,0,14,13 }; //KeyPad.c// //键盘扫描程序// #include <reg51.h> #define uchar unsigned char #define uint unsigned int //扫描键盘时发送到0~3列上的扫描码 uchar KeyboardScanCode[4]={0xEF,0xDF,0xBF,0x7F}; //扫描键盘并返回按键在键盘上的位置序号// uchar KeyScan() {