通过蓝牙发送字符或字符串而不是ASCII码

Question

I am writing an app to send a string of characters to an Arduino using HC-05 bluetooth module.

my problem is I am only able to send it as ascii bytes for example this is my sending method:

    private void sendData()
{
    if (!(btOutputStream == null)){
        try {
            btOutputStream.write("Hello".getBytes());
                ToastMaker("Data is sent");
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}

and this is the output of Arduino's serial monitor:

https://i.stack.imgur.com/88l5w.png

and this is the code of Arduino:

#include <SoftwareSerial.h>
SoftwareSerial Bluetooth(10, 9); // RX, TX
int Data; // the data received

void setup() {
  Bluetooth.begin(9600);
  Serial.begin(9600);
  Serial.println("Waiting for command...");
}

void loop() {
  if (Bluetooth.available()){ //wait for data received
    Data=Bluetooth.read();
    Bluetooth.println(Data);
    Serial.println(Data);
  }
delay(100);
}

In conclusion I am looking for a way to get received data(for example for Hello) like this: H ello

instead of this: 72 101 108 108 111

Answer 1

You can convert the ascii code to a character using the char() method on the Arduino:

char character;

...

character = char(Data);

See the documentation for more information.