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標題: LCD 16*2 顯示問題 [打印本頁]

作者: 小迪 時間: 2014-12-22 02:00
標題: LCD 16*2 顯示問題
#include <LiquidCrystal.h>
LiquidCrystal lcd(8, 9, 4, 5, 6, 7);
int readkey;
int music=0;
void setup() {
  lcd.begin(16, 2);
  lcd.print("Welcome to Play");
}
void loop() {
  lcd.setCursor(0, 1);
  if(music<0) music=20;
  lcd.print("Select ");
  lcd.println(music);
  lcd.print(" song");
  readkey=analogRead(0);
  if (readkey<50) {          //
  lcd.clear();
  lcd.print("Music player");

  delay(500);
  }
  else if(readkey<195) {       //UP
lcd.clear();
music=music+1;
if(music>20) music=0;
lcd.print("Choosing music");
delay(500);
  }
  else if(readkey<380) {       //Down
lcd.clear();
music=music-1;
lcd.print("Choosing music");
delay(500);
  }
  else if(readkey<790) {    //
lcd.clear();
lcd.print("The music stops");
delay(500);
  }
}

顯示出來的music值後面會有怪怪字求解如何用掉

1222.jpg (32.38 KB, 下載次數: 286)

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