Hi everyone,
I have an Arduino UNO with a Wifly RN-XV sending values to my PC by wireless (telnet).
Now I want to get this values on Processing, but I don't know how to do it.
Is there some project like this??Someone can help me with this?
Thanks in advance
Rúben Teixeira
I'm having the same problem Rubeix.
There's a lot of information/code on internet, but until now i couldn't put working on my project...
Which is the best and easiest way to do this connection?Via UDP or TCP/IP??
I suggest you implement your own server in Processing and talk to it through the Arduino
check the following code:
import processing.net.*;
Server myServer;
void setup() {
size(200, 200);
// Starts a myServer on port 1234, change this to whatever suits you!
myServer = new Server(this, 1234);
}
void draw() {
// Get the next available client
Client thisClient = myServer.available();
// write the output of the client
if (thisClient !=null) {
String whatClientSaid = thisClient.readString();
if (whatClientSaid != null) {
println(thisClient.ip() + "t" + whatClientSaid);
}
}
}
and the Arduino code (for Ethernet example, easy to adopt):
#include <SPI.h>
#include <Ethernet.h>
// Enter a MAC address and IP address for your controller below.
// The IP address will be dependent on your local network:
byte mac[] = {
0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED };
IPAddress ip(192,168,1,177);
// Enter the IP address of the server you're connecting to:
IPAddress server(192,168,1,1);
// Initialize the Ethernet client library
// with the IP address and port of the server
EthernetClient client;
void setup() {
// start the Ethernet connection:
Ethernet.begin(mac, ip);
// start the serial library:
Serial.begin(9600);
// give the Ethernet shield a second to initialize:
delay(1000);
Serial.println("connecting...");
// if you get a connection, report back via serial:
if (client.connect(server, 1234)) {
Serial.println("connected");
}
else {
// if you didn't get a connection to the server:
Serial.println("connection failed");
}
}
void loop() {
//The following code will simply send characters for Terminal input to the server - use it as a test
while (Serial.available() > 0) {
char inChar = Serial.read();
if (client.connected()) {
client.print(inChar);
}
}
// if the server's disconnected, stop the client:
if (!client.connected()) {
Serial.println();
Serial.println("disconnecting.");
client.stop();
// do nothing:
while(true);
}
}
Hello charalamposdoukas,
I have been trying to adapt the arduino code from Ethernet to Wifly. I did that looking at the diferences between Wifly_WebServer example from WiFly Shield code library alpha 2 (source:WiFly Shield code library alpha 2 release - SparkFun Electronics Forum) and WebServer example from Ethernet library.
The result is the following code, but it doesn´t run. It has an error that says: "No matching function for call to 'Client::Client()' ". Can you help me with this please?
Thanks in advance
#include "WiFly.h"
#include "Credentials.h"
Server server(80);
void setup() {
// start the WiFly connection:
WiFly.begin();
if (!WiFly.join(ssid, passphrase)) {
while (1) {
// Hang on failure.
}
}
Serial.begin(9600);
Serial.print("IP: ");
Serial.println(WiFly.ip());
server.begin();
// give the WiFly shield a second to initialize:
delay(1000);
Serial.println("connecting...");
// if you get a connection, report back via serial:
if (client.connect(server, 1234)) {
Serial.println("connected");
}
else {
// if you didn't get a connection to the server:
Serial.println("connection failed");
}
}
void loop() {
Client client = server.available();
//The following code will simply send characters for Terminal input to the server - use it as a test
while (Serial.available() > 0) {
char inChar = Serial.read();
if (client.connected()) {
client.print(inChar);
}
}
// if the server's disconnected, stop the client:
if (!client.connected()) {
Serial.println();
Serial.println("disconnecting.");
client.stop();
// do nothing:
while(true);
}
}
At the credentials sketch tab the code is:
#ifndef __CREDENTIALS_H__
#define __CREDENTIALS_H__
// Wifi parameters
char passphrase[] = "passphrase";//my passphrase
char ssid[] = "Wifly";
#endif
Hi,
You have misplaced some of the code in your sketch, check the following code. Have not tested if it runs properly but I least it compiles 
#include "WiFly.h"
#include "Credentials.h"
Server server(80);
void setup() {
// start the WiFly connection:
WiFly.begin();
if (!WiFly.join(ssid, passphrase)) {
while (1) {
// Hang on failure.
}
}
Serial.begin(9600);
Serial.print("IP: ");
Serial.println(WiFly.ip());
server.begin();
// give the WiFly shield a second to initialize:
delay(1000);
Serial.println("connecting...");
//------rest shall be implemented inside loop()
// if you get a connection, report back via serial:
//if (client.connect(server, 1234)) {
//
// Serial.println("connected");
//}
//else {
// // if you didn't get a connection to the server:
// Serial.println("connection failed");
//}
}
void loop() {
Client client = server.available();
//If client has been instantiated
if (client) {
//check for client connection
while (client.connected()) {
//if client has connected
if (client.available()) {
//The following code will simply send characters for Terminal input to the server - use it as a test
while (Serial.available() > 0) {
char inChar = Serial.read();
if (client.connected()) {
client.print(inChar);
}
}
}
}
}
// if the server's disconnected, stop the client:
if (!client.connected()) {
Serial.println();
Serial.println("disconnecting.");
client.stop();
// do nothing:
while(true);
}
}
Sorry, previous post contains server code for the WiFly, but you need the Client code to connect to the Processing sketch (which is creating a server).
#include "WiFly.h"
#include "Credentials.h"
byte server[] = { 192,168,1,1 }; // Your PC IP
Client client(server, 1234);
void setup() {
Serial.begin(9600);
WiFly.begin();
if (!WiFly.join(ssid, passphrase)) {
Serial.println("Association failed.");
while (1) {
// Hang on failure.
}
}
Serial.println("connecting...");
if (client.connect()) {
Serial.println("connected");
client.println("Hello World!\n");
client.println();
} else {
Serial.println("connection failed");
}
}
void loop() {
if (client.available()) {
char c = client.read();
Serial.print(c);
}
while (Serial.available() > 0) {
char inChar = Serial.read();
if (client.connected()) {
client.print(inChar);
}
}
if (!client.connected()) {
Serial.println();
Serial.println("disconnecting.");
client.stop();
for(;;)
;
}
}