int LCD1602_RS=12;
int LCD1602_RW=11;
int LCD1602_EN=10;
int DB[] = { 6, 7, 8, 9};
char str1[]="Welcome to";
char str2[]="STAROCK STUDIO";
char str3[]="Close to nature";
char str4[]="enjoy your life";
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);
}
