51单片机12864液晶显示

1、12864液晶显示VCCRESET_ ±C3 r-iou艮19Y111.0592ISrRESET920Cl|22pFH"一口EN（SCLKTi"JOND.|ONDVCCPl 0PO 0 ADOPl.lP0.1/AD1Pl .2PO 2 . AD2Pl 3PO 3/AD3Pl 4PO 4/AD4Pl 5PO 5. AD5Pl 6PO 6 AD6Pl.7P0.7.AD7P30RXDP2 0 ASP31 TXDP2 1 A9P32 IXTOP2 2/A10P33INT1P2.3/AUP34T0P2.4/A12P35.T1P2 5/A13XTAL1P2 6< A14

2、P2 7/A15XTAL2EATPRDP37RESETWRP36 ALEPPOVs：PSENU1ATS9C52VCC12864LCDOND原理图16例16根据原理图16所示，编写程序实现实现以卜功能：在12864液晶显示器的第 行显 示“0123456789”，并且让每一位数字随机变化，第二行显示“”，第三行显 示“大祥电子”，第四行对应第三行显示出下划线。例16程序清单如F：include <reg51.h>#include <iiitrms.h>数据口寄存器选择输入 /液晶读/写控制 液晶使能控制 /串併方式控制存include <stdlib.h> 存

3、define uchar unsigned char define umt unsigned mt /*端口定义*7define LCD_data PO sbit LCD_RS = P3A5; sbit LCD_RW = P3A6; sbit LCD_EN = P3A4; sbit LCD.PSB = P3A7; sbit wela= P2A6;sbit dula= P2A7;uchar disl10;uchar code dis2 = ""uchar code dis3 "天祥电子"uchar code dis4 = ""void

4、delav_lnis（uinr x）umt ij; fbi(j=Oj<xj-H-)fbr(i=0;i<110;i+)；/*拿*車*車*拿*/严写指令数据到LCD/严RS=L, RW=L丘二高脉冲.D0-D7=指令码。void write_cmd(ucliar cmd) LCD_RS = 0; LCD_RW - 0; LCD_EN = 0;P0 = cmd; delaynis(5);LCD_EN 1;delav_lms(5);LCD_EN = 0;/严写战示数据到LCD严RS=H, RW=L, E=高脉冲，D0-D7=数据。/void wnte_dat(uchar dat) LCD.

5、RS - 1;LCD.RW = 0;LCD_EN = 0;P0 = dat;delay_lms(5);LCD_EN= 1; delay_lms(5); LCD_EN = 0;*/*/*/void lcd_pos(uchai Xuchai Y)严* * * *”*/设定显示位宣ucliai pos;if(X0)X=0x80;else if (X=l)X=0x90;else if (X2)X=0x88;else if (X=3)X«0x98;pos = X+Y;write_cmd(pos); 显 示地址 void niakeiand()umt ran;ran=raiid();dis 1

6、0-i an 10000+0x30; disll=ian% 10000/1000+0x30;dis 1 2=ran%1000/100+0x30; disl3=ran%100/10+0x30; disl4-ran%10+0x30; ran=rand();dis 1 5=ranz 10000+0x30; disl6=ian%10000/1000+0x30;dis l7-ran%1000/100+0x30;dis 1 8=ran% 100/10+0x30;dis 1 9=raii% 10+0x30;void lcd_mit()LCD_PSB = 1; wnte_cmd(0x3 0); delav_l

7、ms(5); wnte_cmd(0x0C);delay_lms(5); wnte_cmd(0x01);delav_lms(5);并11方式葺本指令操作显示开，关光标请除LCD的显示内容* * *«*/*主程序mam()uchai 1； wela=O; dula=O;delav_lms(10); lcd-imtO;lcd_pos(1.0);1 = 0；while(dis2i != O') wnte_dat(dis2i); i卄； lcd_pos(2.0);1-0；while(dis3i != W) wnte_dat(dis3i); i卄； lcd_pos(3,0);1 = 0;while(dis4i ! *0') write_dat(dis4i); 1卄；/*/y*«*/延时初始化LCD设置显示位置为笫二行的笫1个宁符显示7符设置显示位直为