stc89c52单片机控制12864(ST7920) 程序没报错可是不显示，在线等，急急急 -

标题: stc89c52单片机控制12864(ST7920) 程序没报错可是不显示，在线等，急急急 [打印本页]

作者: jing2587 时间: 2015-5-10 22:27
标题: stc89c52单片机控制12864(ST7920) 程序没报错可是不显示，在线等，急急急

#include <reg51.h>
#include <intrins.h>
#include <string.h>
#include <stdlib.h>

#define uchar unsigned char
#define uint  unsigned int
/*端口定义*/
#define LCD_data P0
sbit LCD_RS = P3^5;
sbit LCD_RW = P3^6;
sbit LCD_EN = P3^4;
sbit LCD_PSB = P3^7;
sbit wela = P2^6;
sbit dula = P2^7;

uchar dis1[10];
uchar dis2[]={"aaaaa"};
uchar dis3[]={"马静"};
uchar dis4[]={"欢迎各位"};

void delay_lms(uint x)
{
uint i,j;
for(j=0;j<x;j++)
   for(i=0;i<110;i++);
}
/*写指令数据到LCD*/
/*RS=L, RW=L, E=高脉冲， D0-D7=指令码*/
void write_cmd(uchar cmd){
LCD_RS = 0;
LCD_RW = 0;
LCD_EN = 0;
P0 = cmd;
delay_lms(5);
LCD_EN = 1;
delay_lms(5);
LCD_EN = 0;
}
/*写显示数据到LCD*/
/*RS=H, RW=L, E=高脉冲, D0-D7=数据*/
void write_dat(uchar dat){
LCD_RS = 1;
LCD_RW = 0;
LCD_EN = 0;
P0 = dat;
delay_lms(5);
LCD_EN = 1;
delay_lms(5);
LCD_EN = 0;
}
/*设定显示位置*/
void lcd_pos(uchar X,uchar Y){
uchar pos;
if(X == 0){
   X = 0x80;
}else if(X == 1){
      X = 0x90;
}else if(X == 2){
   X = 0x88;
}else if(X == 3){
   X = 0x98;
}
pos = X + Y;
write_cmd(pos);  //显示地址
}
void makerand(){
uint ran;
ran = rand();
dis1[0] = ran/10000 + 0x30;
dis1[1] = ran%10000/10000 + 0x30;
dis1[2] = ran%1000/100 + 0x30;
dis1[3] = ran%100/10 + 0x30;
dis1[4] = ran%10 + 0x30;
ran = rand();
dis1[5] = ran/10000 + 0x30;
dis1[6] = ran%10000/10000 + 0x30;
dis1[7] = ran%1000/100 + 0x30;
dis1[8] = ran%100/10 + 0x30;
dis1[9] = ran%10 + 0x30;
}
/*LCD初始化设定*/
void lcd_init(){
LCD_PSB = 1;  //并口方式
write_cmd(0x30);  //基本指令操作
delay_lms(5);
write_cmd(0x0C); //显示开，关光标
delay_lms(5);
write_cmd(0x01); //清除LCD显示内容
delay_lms(5);
}
/*主程序*/
main(){
uchar i;
wela = 0;
dula = 0;
delay_lms(10);
lcd_init();
lcd_pos(1,0);
i = 0;
while(dis2[i]!='\0'){
   write_dat(dis2[i]);  //显示字符
   i++;
}
lcd_pos(2,0);
i=0;
while(dis3[i]!='\0'){
   write_dat(dis3[i]);    //显示字符
   i++;
}
lcd_pos(3,0);
i=0;
while(dis4[i]!='\0'){
   write_dat(dis4[i]);    //显示字符
   i++;
}
while(1){
   lcd_pos(0,0);
   makerand();
   for(i=0;i<10;i++){
         write_dat(dis1[i]);
   }
}
}

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