我在Android端使用BluetoothChat代码使用聊天框向Arduino UNO发送ON / OFF信号（我发送110,119或其他如下定义的情况），但是当我显示收到的值时，它显示奇怪Arduino串行监视器中的值，即255,254,250或245，并且在Android端也回复了奇怪的值 .
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正确执行/打开/关闭时，110,119等中只有单个条件成立 .
任何人都可以帮我解决问题吗？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;
}
2 回答
试试 char data = Serial.read();
并显示Android的Java代码 .
请参阅Bluetooth Arduino&Android的100％工作代码
如果您使用的是Arduino Uno，那么如果您已经使用串口与蓝牙通信，则不能使用串行监视器来打印值，因为它只有一个串行端口 .
您必须使用软件串行库或使用具有4个串行端口的Arduino Mega .