LCD 1602实验

Lily

LCD 1602 液晶也叫LCD1602 字符型液晶，它是一种专门用来显示字母，数字，符号等的点阵型液晶模块。
一、试验元件：pcDuino套件、1块 LCD1602液晶模块、1个可调电位器、16根导线、1块面包板
二、试验连接图：

• LCD模块的D4连到 pcDuino D4
• LCD模块的D5连到 pcDuino D5
• LCD模块的D6连到 pcDuino D6
• LCD模块的D7连到 pcDuino D7
• LCD模块的RS连到 pcDuino D8
• LCD模块的E连到 pcDuino D9
  

三、进入arduino IDE，输入代码
[backcolor=white !important]

#include "core.h"

#define RS 8

#define EN 9

#define backlight 10

#define RS_L digitalWrite(RS,LOW)

#define RS_H digitalWrite(RS,HIGH)

#define EN_L digitalWrite(EN,LOW)

#define EN_H digitalWrite(EN,HIGH)

int DB[] = {7,6,5,4};

/********************************************************************/

void write_command(int command)

{

int i,temp;

RS_L;

EN_L;

temp=command & 0xf0;

for (i=0; i < 4; i++)

{

if(temp&0x80)

digitalWrite(DB,HIGH);

else digitalWrite(DB,LOW);

temp <<= 1;

delayMicroseconds(10);

}

EN_H;

delay(1);

EN_L;

temp=(command & 0x0f)<<4;

for (i=0; i < 4; i++)

{

if(temp&0x80)

digitalWrite(DB,HIGH);

else digitalWrite(DB,LOW);

temp <<= 1;

delayMicroseconds(10);

}

EN_H;

delay(1);

EN_L;

}

/********************************************************************/

void write_data(int dat)

{

int i=0,temp;

RS_H;

EN_L;

temp=dat & 0xf0;

for (i=0; i < 4; i++)

{

if(temp&0x80)

digitalWrite(DB,HIGH);

else digitalWrite(DB,LOW);

temp <<= 1;

delayMicroseconds(10);

}

EN_H;

delay(1);

EN_L;

temp=(dat & 0x0f)<<4;

for (i=0; i < 4; i++)

{

if(temp&0x80)

digitalWrite(DB,HIGH);

else digitalWrite(DB,LOW);

temp <<= 1;

delayMicroseconds(10);

}

EN_H;

delay(1);

EN_L;

}

/********************************************************************/

void LCD_write_char( int x,int y,int dat)

{

int address;

if (x ==0) address = 0x80 + y;

else address = 0xC0 + y;

write_command(address);

write_data(dat);

delayMicroseconds(10);

}

/********************************************************************/

void lcd1602_init()

{

int i = 0;

pinMode(RS,OUTPUT);

pinMode(EN,OUTPUT);

pinMode(backlight,OUTPUT);

digitalWrite(backlight,HIGH);

for (i=0; i < 4; i++)

{

pinMode(DB,OUTPUT);

}

delay(100);

write_command(0x28);

delay(50);

write_command(0x06);

delay(50);

write_command(0x0c);

delay(50);

write_command(0x80);

delay(50);

write_command(0x01);

delay(100);

}

/********************************************************************/

void setup (void)

{

lcd1602_init();

}

/********************************************************************/

void loop (void)

{

write_command(0x02);

LCD_write_char(0,2,'W');

LCD_write_char(0,3,'e');

LCD_write_char(0,4,'l');

LCD_write_char(0,5,'c');

LCD_write_char(0,6,'o');

LCD_write_char(0,7,'m');

LCD_write_char(0,8,'e');

LCD_write_char(0,10,'t');

LCD_write_char(0,11,'o');

LCD_write_char(1,4,'p');

LCD_write_char(1,5,'c');

LCD_write_char(1,6,'D');

LCD_write_char(1,7,'u');

LCD_write_char(1,8,'i');

LCD_write_char(1,9,'n');

LCD_write_char(1,10,'o');

while(1);

}

四、试验结果如图：

kimi

{:soso_e142:}楼主辛苦了，光看线我就已经晕了

atsky

撸主干嘛搞这么复杂呢？
//调用LCD驱动库
//#include <LiquidCrystal.h>
//LiquidCrystal lcd(12, 13, 26, 27, 28, 29);   //定义传输IO口，可根据实际情况调整IO口使用,(RS,E,DB4-7)

追梦123

确实出现了welcome to pcduino

lhj123

我按照楼主的程序，把代码烧写进去了，我把那个backlight 连到了 lcd上的RW管脚，为什么不显示，屏幕一直闪烁，

格式化记忆

atsky 发表于 2014-2-7 16:31
撸主干嘛搞这么复杂呢？
//调用LCD驱动库
//#include

求教啊，大神

atsky

格式化记忆 发表于 2014-7-15 14:17
求教啊，大神

,你得先有LiquidCrystal.h库，记得置顶贴里有

明娃子

lcd就没玩明白过

明娃子

这个写的不错  空了试试