使用51单片机和lcd1602打招呼

1.LCD驱动程序

1.1 驱动头文件

     lcd1602.h

#ifndef LCD1602_H
#define LCD1602_H

#include <reg51.h>

// 定义LCD1602端口
sbit RS = P2^0;  // 指令/数据选择
sbit RW = P2^1;  // 读/写选择
sbit EN = P2^2;  // 使能信号

void LCD_Init();
void LCD_CmdWrite(unsigned char cmd);
void LCD_DataWrite(unsigned char dat);
void LCD_Clear();
void LCD_WriteString(char *str);
void LCD_SetCursor(unsigned char row, unsigned char col);

#endif // LCD1602_H

1.2 驱动源文件

lcd1602.c

#include "lcd1602.h"

void delay_ms(unsigned int count) {
    // 等待一段时间的延迟函数，具体实现根据需要调整
    while(count--) {
       unsigned int i;
       for(i = 0; i < 1000; i++);
    }
}

void LCD_Init() {
    delay_ms(15);
    LCD_CmdWrite(0x38);
    LCD_CmdWrite(0x0C);
    LCD_CmdWrite(0x06);
    LCD_CmdWrite(0x01);
    delay_ms(2);
}

void LCD_CmdWrite(unsigned char cmd) {
    RS = 0;
    RW = 0;
    P0 = cmd;
    EN = 1;
    delay_ms(1);
    EN = 0;
}

void LCD_DataWrite(unsigned char dat) {
    RS = 1;
    RW = 0;
    P0 = dat;
    EN = 1;
    delay_ms(1);
    EN = 0;
}

void LCD_Clear() {
    LCD_CmdWrite(0x01);
    delay_ms(2);
}

void LCD_WriteString(char *str) {
    while (*str) {
        LCD_DataWrite(*str);
        str++;
    }
}

void LCD_SetCursor(unsigned char row, unsigned char col) {
    unsigned char address;
    if (row == 1) {
        address = 0x80 + col - 1;
    } else {
        address = 0xC0 + col - 1;
    }
    LCD_CmdWrite(address);
}

2.主程序

main.c

#include <reg51.h>
#include "driver/lcd1602.h"

void main() {
    LCD_Init();  // 初始化LCD1602
    
    LCD_Clear(); // 清屏

    LCD_SetCursor(1, 1); // 设置光标位置为第一行第一列
    LCD_WriteString("Hello, Navy!");

    while (1);  // 程序进入死循环
}

3.仿真电路

 4.仿真效果

 5。项目地址

https://gitee.com/navysummer/at89c51/tree/master/lcd1602