Need help with a split function

Hardware Arduino Yún
#1

Hey guys,

I'm all confused on how to do that on the Yun. Right now I have this post : http://forum.arduino.cc/index.php/topic,41215.0.html but I can't figure out how to client.read to a char so I can use the function.

The string my Yun receive is something like that : C/L/25/100 or it could be F/F/100/25 you get the idea

Thank you for the help

#2

May Stream.readStringUntil() help? Stream.readStringUntil() - Arduino Reference

#3

Yeah I was looking into that but I was wondering if I get a string with multiple terminator char what does it do ?

Ex: My received string is "C/L/120"

I would do something like command = client.readStringUntil('/'); what command is going to have inside only C or it's going to give me and array of everything?

Thank you.

#4

I'm not completely sure of it (can't test it ATM) but it should return C, you call it again and it returns L

#5

Oh ok, that would work then. I’ll give it a try maybe tonight. If ever you test it before I did let me know.

Thank you Frederico.

#6

Still haven't tested it, but the source code confirms it

#7

Ok I'm no expert here and far from there but I tried something like

command[0] = client.readStringUntil('/'):
command[1] = client.readStringUntil('/'):

and the output comes out like

Command[0]: C
Command[1]: C

and I tried sending C/L

Thank you for the help

#8

For anyone who is interested I figured out how to do it. Here is my test code

#include <Bridge.h>
#include <Console.h>
#include <YunServer.h>
#include <YunClient.h>

// The pin that the LED is attached to
const int ledPin = 13;

// We open the socket 5678 to communicate.
YunServer server(5555);

void setup() {
  Serial.begin(9600);

  // Attach the LED to pin 13 as output
  pinMode(ledPin, OUTPUT);
  digitalWrite(ledPin, HIGH);

  // Bridge startup
  Bridge.begin();

  server.noListenOnLocalhost();
  server.begin();
}

void loop() {
  YunClient client = server.accept();

  // There is a new client
  if (client) {
    client.setTimeout(5);

    String command = "none";

    digitalWrite(ledPin, LOW);
    
    String test[2];

    while (!command.equals("stop")) {
      if (client.available() > 0) {
        command = client.readStringUntil('/');
        

        Serial.println("Reading Command :" + command);
        if (command != "") {
          // trim off any whitespace:
          command.trim();
          test[0] = command.substring(0);
          // convert to an int and map to the screen height:
          Serial.println("Command 1: " + test[0]);
        }
        command = client.readStringUntil('/');
        if (command != "") {
          // trim off any whitespace:
          command.trim();
          test[1] = command.substring(0);
          // convert to an int and map to the screen height:
          Serial.println("Command 2: " + test[1]);
        }
      }
    }
  }
}

Have fun

#9