基于Arduino的LCD1602显示实验

ID:110456 · 发表于 2017-7-20 20:07

int LCD1602_RS=12;
int LCD1602_RW=11;
int LCD1602_EN=10;
int DB[] = { 6, 7, 8, 9};
char str1[]="Welcome to";
char str2[]="geek-workshop";
char str3[]="this is the";
char str4[]="4-bit interface";

void LCD_Command_Write(int command)
{
int i,temp;
digitalWrite( LCD1602_RS,LOW);
digitalWrite( LCD1602_RW,LOW);
digitalWrite( LCD1602_EN,LOW);

temp=command & 0xf0;
for (i=DB[0]; i <= 9; i++)
{
digitalWrite(i,temp & 0x80);
temp <<= 1;
}

digitalWrite( LCD1602_EN,HIGH);
delayMicroseconds(1);
digitalWrite( LCD1602_EN,LOW);

temp=(command & 0x0f)<<4;
for (i=DB[0]; i <= 9; i++)
{
digitalWrite(i,temp & 0x80);
temp <<= 1;
}

digitalWrite( LCD1602_EN,HIGH);
delayMicroseconds(1);
digitalWrite( LCD1602_EN,LOW);
}

void LCD_Data_Write(int dat)
{
int i=0,temp;
digitalWrite( LCD1602_RS,HIGH);
digitalWrite( LCD1602_RW,LOW);
digitalWrite( LCD1602_EN,LOW);

temp=dat & 0xf0;
for (i=DB[0]; i <= 9; i++)
{
digitalWrite(i,temp & 0x80);
temp <<= 1;
}

digitalWrite( LCD1602_EN,HIGH);
delayMicroseconds(1);
digitalWrite( LCD1602_EN,LOW);

temp=(dat & 0x0f)<<4;
for (i=DB[0]; i <= 9; i++)
{
digitalWrite(i,temp & 0x80);
temp <<= 1;
}

digitalWrite( LCD1602_EN,HIGH);
delayMicroseconds(1);
digitalWrite( LCD1602_EN,LOW);
}

void LCD_SET_XY( int x, int y )
{
  int address;
  if (y ==0) address = 0x80 + x;
  else       address = 0xC0 + x;
  LCD_Command_Write(address);
}

void LCD_Write_Char( int x,int y,int dat)
{
  LCD_SET_XY( x, y );
  LCD_Data_Write(dat);
}

void LCD_Write_String(int X,int Y,char *s)
{
LCD_SET_XY( X, Y ); //设置地址
while (*s)          //写字符串
{
   LCD_Data_Write(*s);
   s ++;
}
}

void setup (void)
{
  int i = 0;
  for (i=6; i <= 12; i++)
{
   pinMode(i,OUTPUT);
}
  delay(100);
  LCD_Command_Write(0x28);//4线 2行 5x7
  delay(50);
  LCD_Command_Write(0x06);
  delay(50);
  LCD_Command_Write(0x0c);
  delay(50);
  LCD_Command_Write(0x80);
  delay(50);
  LCD_Command_Write(0x01);
  delay(50);

}

void loop (void)
{
LCD_Command_Write(0x01);
delay(50);
LCD_Write_String(3,0,str1);//第1行，第4个地址起
delay(50);
LCD_Write_String(1,1,str2);//第2行，第2个地址起
delay(5000);
LCD_Command_Write(0x01);
delay(50);
LCD_Write_String(0,0,str3);
delay(50);
LCD_Write_String(0,1,str4);
delay(5000);

}

ID:221607 · 发表于 2017-7-22 15:36

楼主不上个接线图吗

ID:110456 · 发表于 2017-7-24 21:29

接线图在附件中

ID:230261 · 发表于 2017-8-31 17:52

好东西，学习一下

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基于Arduino的LCD1602显示实验

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