在LCD1602上面制作显示一个简易的电池并带百分比

最新推荐文章于 2025-06-10 19:41:22 发布

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最新推荐文章于 2025-06-10 19:41:22 发布 · 5.2k 阅读

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CC 4.0 BY-SA版权

文章标签：

#LCD1602 #单片机 #电池

本文档详细介绍了如何使用LCD1602显示器在单片机项目中显示电池电量，并以百分比形式呈现。通过主函数文件和延时函数文件的设置，实现了电池状态的实时监测。

主函数文件：

#include <reg52.h>
#include <intrins.h>
#include "./delay/delay.h"

sbit SCL = P1^0;
sbit SDA = P1^1;

bit ack = 0;

sbit RS = P2^4;
sbit RW = P2^5;
sbit E  = P2^6;

#define SUCC 1
#define ERR  0
#define LCDPORT P0
#define LCD_WRITE_DATA 1
#define LCD_WRITE_COM  0

void lcd1602_write(unsigned char byte,unsigned char flag)
{
	  if(flag)
		{
			  RS = 1;
		}
		else
		{
			  RS = 0; 
		}
		RW = 0; 
		E = 1;  
		LCDPORT = byte;
		delay_us(5);
		E = 0; 
}

void lcd_dis_char(unsigned char x, unsigned char y, unsigned char byte)
{
    if((x > 15) || (y > 1))
		{
			  return ;
		}
		if(0 == y)
		{
			  lcd1602_write(0x80 + x,LCD_WRITE_COM);
		}
		else
		{
			  lcd1602_write(0x80 + 0x40 + x,LCD_WRITE_COM);
		}
		lcd1602_write(byte,LCD_WRITE_DATA);
}

void lcd_init()
{
	  delay_ms(15);
	  lcd1602_write(0x38,LCD_WRITE_COM); 
	  delay_ms(5);
		lcd1602_write(0x38,LCD_WRITE_COM); 
	  delay_ms(5);
		lcd1602_write(0x38,LCD_WRITE_COM); 
	  delay_ms(5);
		lcd1602_write(0x38,LCD_WRITE_COM); 
	  delay_ms(5);
		lcd1602_write(0x08,LCD_WRITE_COM);
	  delay_ms(5);
		lcd1602_write(0x01,LCD_WRITE_COM); 
	  delay_ms(5);
	  lcd1602_write(0x06,LCD_WRITE_COM); 
	  delay_ms(5);
		lcd1602_write(0x0c,LCD_WRITE_COM); 
	  delay_ms(5);
}

void iic_start()
{
	  SDA = 1;
	  SCL = 1;
	  delay_us(1);
	  SDA = 0;
	  delay_us(1);
	
	  SCL = 0; 
}

void iic_stop()
{
	  SDA = 0;
	  SCL = 1;
	  delay_us(1);
	  SDA = 1;
	  delay_us(1);
	
	  SCL = 0; 
}

bit iic_send_byte(unsigned char byte)
{
	  unsigned char i;
	  for(i = 0; i < 8; i++)
	  {
			  SDA = byte & 0x80;   
			  SCL

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