矩阵键盘1602液晶显示键值 代码.docVIP

// 矩阵键盘1602液晶显示键值 #include reg51.h #include intrins.h #define uchar unsigned char #define uint unsigned int uchar dis_buf; //显示缓存 uchar temp; uchar key; //键顺序吗 void delay0(uchar x); //x*0.14MS sbit LCD_RW = P2^5; sbit LCD_RS = P2^6; sbit LCD_EN = P2^7; uchar cdis1[16] = { KEY NUMBER }; uchar cdis2[16] = { KEY-CODE: H }; #define delayNOP(); {_nop_();_nop_();_nop_();_nop_();}; void delay(uchar x) { uchar j; while((x--)!=0) { for(j=0;j125;j++) {;} } } /****** //检查LCD忙状态 //lcd_busy为1时，忙，等待。lcd-busy为0时,闲，可写指令与数据 ****/ bit lcd_busy() { bit result; LCD_RS = 0; LCD_RW = 1; LCD_EN = 1; delayNOP(); result = (bit)(P00x80); LCD_EN = 0; return(result); } /*写指令数据到LCD */ //RS=L，RW=L，E=高脉冲，D0-D7=指令码。 void lcd_wcmd(uchar cmd) { while(lcd_busy()); LCD_RS = 0; LCD_RW = 0; LCD_EN = 0; _nop_(); _nop_(); P0 = cmd; delayNOP(); LCD_EN = 1; delayNOP(); LCD_EN = 0; } //写显示数据到LCD //RS=H，RW=L，E=高脉冲，D0-D7=数据。 void lcd_wdat(uchar dat) { while(lcd_busy()); LCD_RS = 1; LCD_RW = 0; LCD_EN = 0; P0 = dat; delayNOP(); LCD_EN = 1; delayNOP(); LCD_EN = 0; } /* LCD初始化设定 */ void lcd_init() { delay(15); lcd_wcmd(0x38); //16*2显示，5*7点阵，8位数据 delay(5); lcd_wcmd(0x38); delay(5); lcd_wcmd(0x38); delay(5); lcd_wcmd(0x0c); //显示开，关光标 delay(5); lcd_wcmd(0x06); //移动光标 delay(5); lcd_wcmd(0x01); //清除LCD的显示内容 delay(5); } /* 设定显示位置 */ void lcd_