Received String Data From Android Apps Blutooh (Bluetooth Terminal) to Arduino using Bluetooth HC-05

Question

I want to create a system that can send messages between android app with arduino using bluetooth module. I Used bluetooth terminal (android) made by qwerty

#include <SoftwareSerial.h>
SoftwareSerial mySerial(10, 11); // RX, TX
String Data = "";

void setup()  
{
    mySerial.begin(9600);
}

void loop() // run over and over
{
  while(mySerial.available()==0)
  {}

  char character;
  while(mySerial.available()>0)
  {
    character = mySerial.read();
    mySerial.write(character);
  }

  data = data + character;

  if (character == 13) {  
    mySerial.print("Received: ");
    mySerial.println(data);
    data = "";
  } 
}

Everything it's ok when I send single character, but if I send string data (more than 1 character) arduino can't received it correctly. always error data in second character received.

Anyone can describe and help me to solve the problem? Any response are appreciated.

If solved the problem, I will posted the guide.

example, if i type test, arduino only display tyyy – patusacyber Aug 26 '15 at 04:30 — patusacyber, Aug 26 '15 at 04:30

score 1 · Answer 1 · edited May 23 '17 at 12:16

1

If you are trying to get more than one character, use arrays to store all the characters from the buffer at once.

May be this will give you some idea.

this post does it nicely

edited May 23 '17 at 12:16

Community

1
1

answered Aug 26 '15 at 14:27

Ccr

686
7
25

Hy CCR. Thanjs you.. I have try that's tutorial, its worked if using terminal. But if I used Bluetooth communication (using android phone) I confused to implement the code. Any solution or sample using Bluetooth communication? – patusacyber Aug 27 '15 at 16:14

score 1 · Accepted Answer · edited Dec 06 '15 at 10:21

1

#include <SoftwareSerial.h>
SoftwareSerial mySerial(10, 11); // RX, TX
String Data = "";

void setup() {
    mySerial.begin(9600);
}

void loop() // run over and over
{
  while(mySerial.available()==0)
  {}

  char character;
  while(mySerial.available()>0)
  {
    character = mySerial.read();
    mySerial.write(character);
    data = data + character;
  }

 // data = data + character;

  if (character == 13) {  
    mySerial.print("Received: ");
    mySerial.println(data);
    data = "";`enter code here`
  } 
}

edited Dec 06 '15 at 10:21

Bartłomiej Semańczyk

59,234
49
233
358

answered Dec 06 '15 at 09:53

Shravya

26
1

what does character==13 mean? – Jay Dangar Jul 04 '18 at 05:29

Received String Data From Android Apps Blutooh (Bluetooth Terminal) to Arduino using Bluetooth HC-05

2 Answers2