我正在使用 Android 端的 BluetoothChat 代码使用聊天框向 Arduino UNO 发送 ON/OFF 信号(我正在发送 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Arduino 串行监视器中的值,即 255、254、250 或 245,并且在 Android 端也以奇怪的值回复。
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 等中只有一个条件为真。
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;
}