Android 和 Arduino 都通过蓝牙接收奇怪的值

我正在 Android 端使用 BluetoothChat 代码使用聊天框向 Arduino UNO 发送开/关信号（我发送 110、119 或下面定义的其他情况），但是当我显示接收到的值时，它显示奇怪的Arduino 串行监视器中的值，即 255、254、250 或 245，并在 Android 端回复奇怪的值。

但令人惊讶的是，当我从 android 发送这些命令并且没有其他指令/LED 得到正确执行/打开/关闭时，110、119 等中只有一个条件为真。

任何人都可以帮我解决这个问题吗？下面是我的arduino代码。

int data; 
String message; 

void setup () 
{ 
Serial.begin (57600); 

pinMode (6, OUTPUT); 
pinMode (7, OUTPUT); 
pinMode (8, OUTPUT); 
pinMode (9, OUTPUT); 
pinMode (10, OUTPUT); 

digitalWrite(6, LOW); // off LED 1 at pin6 
digitalWrite(7, LOW); // off LED 2 at pin7 
digitalWrite(8, LOW); // off LED 3 at pin8 
digitalWrite(9, LOW); // off LED 4 at pin9 
digitalWrite(10, LOW); // off LED 5 at pin10 
}

void loop () { 
int i=0; 
if (Serial.available()>0) 
{ 
int data= Serial.read(); 

Serial.println (" Received data: "); 
Serial.println (data); 

if (data==110) //q 
{ 
digitalWrite(6, HIGH); // turn on LED 1 at pin6 
message = "LED 1 On"; 
Serial.println (message); 

} 
if (data==102) // a 
{ 
digitalWrite(6, LOW); // off LED 1 at pin6 
message = "LED 1 Off"; 
Serial.println (message); 
} 

if (data==96) //c 
{ 
digitalWrite(7, HIGH); //on LED 2 
message = "LED 2 On"; 
Serial.println (message); 
} 

if (data==115) //d 
{ 
digitalWrite(7, LOW); // off LED 2 
message = "LED 2 Off"; 
Serial.println (message); 
} 

if (data==111) //e 
{ 
digitalWrite(8, HIGH); //on LED 3 
message = "LED 3 On"; 
Serial.println (message); 
} 

if (data==97)// f 
{ 
digitalWrite(8, LOW); //sets the LED 3 
message = "LED 3 Off"; 
Serial.println (message); 
} 

if (data==107) //g 
{ 
digitalWrite(9, HIGH); //turn on LED 4 
message = "LED 4 On"; 
Serial.println (message); 
} 

if (data==120)//h 
{ 
digitalWrite(9, LOW); //sets the LED 4 
message = "LED 4 Off"; 
Serial.println (message); 
} 


if (data==99) //i 
{ 
digitalWrite(10, HIGH); //sets the LED 5 
message = "L5 high"; 
Serial.println (message); 
} 

if (data==104) //j 
{ 
digitalWrite(10, LOW); //sets the LED 5 
message = "LED 5 Off"; 
Serial.println (message); 
} 

if (data==112) //y 
{ 
digitalWrite(6, HIGH); // turn on ALL LEDs 
digitalWrite(7, HIGH); 
digitalWrite(8, HIGH); 
digitalWrite(9, HIGH); 
digitalWrite(10, HIGH); 
message = "ALL LEDs ON"; 
Serial.println (message); 
} 


if (data==122)//z 
{ 
digitalWrite(6, LOW); //Turn off all LEDs 
digitalWrite(7, LOW); 
digitalWrite(8, LOW); 
digitalWrite(9, LOW); 
digitalWrite(10, LOW); 
Serial.println ("ALL LEDs OFF"); 
} 

else 
{ 
digitalWrite(13, HIGH); //sets the LED 5 
delay(3000); //3sec 
digitalWrite(13, LOW); 
delay(3000); 
Serial.println (" else case executed "); 

} ////end of else 

}
data=0;
}

Try 字符数据 = Serial.read();

并显示 Android 的 Java 代码。

请参阅 100% 工作代码