四位接线法代码
/**
* VSS GND
* VDD 5V
* V0 GND
* RS 12
* RW 11
* E 10
* D4 9
* D5 8
* D6 7
* D7 6
* A V5
* K GND
* from http://surenpi.com
* created 2015/3/23
*/int LCD1602_RS=12;int LCD1602_RW=11;int LCD1602_EN=10;int DB[] = { 6, 7, 8, 9};char str1[]="Welcome to";char str2[]="surenpi";char str3[]="find me";char str4[]="surenpi.com";
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 cleanScreen(int delayTime = 50){
LCD_Command_Write(0x01);
delay(delayTime);
}
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, int delayTime = 50){
LCD_SET_XY(x, y); //设置地址
int i = 0;
while(*s && ++i <= 16) //写字符串 {
LCD_Data_Write(*s);
s++;
}
delay(delayTime);
if(*s)
{
cleanScreen();
LCD_Write_String(x, y, s, delayTime);
}
}
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){
cleanScreen();
LCD_Write_String(3,0,str1);//第1行，第4个地址起 LCD_Write_String(0,1,str2, 3000);//第2行，第2个地址起
cleanScreen();
LCD_Write_String(0,0,str3);
LCD_Write_String(0,1,str4, 3000);
}
米思奇
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