LCD1604液晶屏的单片机显示程序

ID:11804 · 发表于 2017-5-30 14:32

lcd1604显示程序51单片机驱动，lcd1604和lcd1602操作是一样的，就是多了两行显示，也就多了2个显示地址；LCD1602行地址为80H，C0H
LCD1604行地址为80H，C0H，90H，D0H

仿真原理图如下（proteus仿真工程文件可到本帖附件中下载）：

单片机源程序：
#include <AT89X52.H>

#define lcd_data  P0
sbit rs=P2^0;    //寄存器类型选择位
sbit rw=P2^1;    //数据读写类型控制位
sbit e=P2^2;    //下降沿使能控制位
sbit flag=ACC^7; //LCD忙状态判断标志位
void wait(void);
void delay(unsigned int temp);
void initial(void);
unsigned char code seg[]={0x43,0x68,0x69,0x6E,0x61,0x20,0x55,0x6E,0x69,0x76, //China University of Mining and
                        0x65,0x72,0x73,0x69,0x74,0x79,0x20,0x6F,0x66,0x20,  //Techlonogy 17--302
                                                                     0x4D,0x69,0x6E,0x69,0x6E,0x67,0x20,0x61,0x6E,0x64,
                                                                     0x20,0x20,0x54,0x65,0x63,0x68,0x6C,0x6F,0x6E,0x6F,0x67,
                                                                     0x79,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x5C,0x5C,
                                                                     0x31,0x37,0x2D,0x2D,0x33,0x30,0x32,0x5C,0x5C,0x20,0x20,0x20};
void main(void){
   unsigned char data_index;
         unsigned char add_first,add_second,add_third,add_fourth;    //LCD行地址为80H，C0H，90H，D0H
   initial();       //初始化LCD
   while(1){
                           data_index=0;add_first=0x80;add_second=0xC0;add_third=0x90;add_fourth=0xD0;
                           while(data_index<=15){
                           rs=0;rw=0;lcd_data=add_first+data_index;e=1;e=0; //第一行显示
                                                               wait();
                                                               rs=1;rw=0;lcd_data=seg[data_index];e=1;e=0;
                                                               wait();
                                                               data_index++;
                                 }
                                                while(data_index<=31){                         //第二行显示
                           rs=0;rw=0;lcd_data=add_second+data_index-16;e=1;e=0;
                                                               wait();
                                                               rs=1;rw=0;lcd_data=seg[data_index];e=1;e=0;
                                                               wait();
                                                               data_index++;
                                 }
                                                while(data_index<=47){                         //第三行显示
                           rs=0;rw=0;lcd_data=add_third+data_index-32;e=1;e=0;
                                                               wait();
                                                               rs=1;rw=0;lcd_data=seg[data_index];e=1;e=0;
                                                               wait();
                                                               data_index++;
                                 }
                                                while(data_index<=63){                      //第四行显示
                           rs=0;rw=0;lcd_data=add_fourth+data_index-48;e=1;e=0;
                                                               wait();
                                                               rs=1;rw=0;lcd_data=seg[data_index];e=1;e=0;
                                                               wait();
                                                               data_index++;
                                 }
      }
}
void initial(void){
         rs=0;rw=0;lcd_data=0x38; //置功能，8位数据位，2行显示,5×7点阵
                        e=1; e=0;wait();
                        rs=0;rw=0;lcd_data=0x06; //地址计数器自动加1，显示屏不移动
                        e=1;e=0;wait();
                        rs=0;rw=0;lcd_data=0x0c; //显示开，光标显示，光标闪烁
                        e=1;e=0;wait();
                        rs=0;rw=0;lcd_data=0x01; //清显示，光标复位到00H
                        e=1;e=0;wait();
}
void wait(void){                //判断LCD处于空闲状态
         do{
               rs=0;rw=1;
               e=1;
                                             e=0;delay(0);
               P0_7=1;flag=P0_7;
            }while(flag==0);

}
void delay(unsigned int temp){
   unsigned int jj;
            for(jj=0;jj<=temp;jj++)
            ;
}

下载：

LCD1604.zip (258.92 KB, 下载次数: 119)