Arduino UNO WIFI not working properly - wifi

Question

I have purchased an Arduino UNO WIFI board (http://www.arduino.org/products/boards/arduino-uno-wifi) but cannot get it work.
If it try the following example from http://www.arduino.org/learning/tutorials/boards-tutorials/restserver-and-restclient
the answer to every GET request e.g. arduino.local/arduino/analog/2
is "~". Within the Wifi-Console i find only strange chars like "�~�~�" and in the debug log i find:
746211> ARDUINO REST content: /arduino/digital/13/1
788705> ARDUINO REST content: /arduino/analog/2
I updated the firmware to 2016-03-18 - 79f152c, but no changes.
RestServer Code:
/*
RestServer.ino
Arduino Uno WiFi Ciao example
This example for the Arduino Uno WiFi shows how to use the
Ciao library to access the digital and analog pins
on the board through REST calls. It demonstrates how
you can create your own API when using REST style
calls through the browser.
Possible commands created in this shetch:
* "/arduino/digital/13" -> digitalRead(13)
* "/arduino/digital/13/1" -> digitalWrite(13, HIGH)
* "/arduino/analog/2/123" -> analogWrite(2, 123)
* "/arduino/analog/2" -> analogRead(2)
* "/arduino/mode/13/input" -> pinMode(13, INPUT)
* "/arduino/mode/13/output" -> pinMode(13, OUTPUT)
This example code is part of the public domain
http://www.arduino.org/learning/tutorials/restserver-and-restclient
*/
#include <Wire.h>
#include <ArduinoWiFi.h>
void setup() {
Wifi.begin();
Wifi.println("REST Server is up");
}
void loop() {
while(Wifi.available()){
process(Wifi);
}
delay(50);
}
void process(WifiData client) {
// read the command
String command = client.readStringUntil('/');
// is "digital" command?
if (command == "digital") {
digitalCommand(client);
}
// is "analog" command?
if (command == "analog") {
analogCommand(client);
}
// is "mode" command?
if (command == "mode") {
modeCommand(client);
}
}
void digitalCommand(WifiData client) {
int pin, value;
// Read pin number
pin = client.parseInt();
// If the next character is a '/' it means we have an URL
// with a value like: "/digital/13/1"
if (client.read() == '/') {
value = client.parseInt();
digitalWrite(pin, value);
}
else {
value = digitalRead(pin);
}
// Send feedback to client
client.println("Status: 200 OK\n");
client.print(F("Pin D"));
client.print(pin);
client.print(F(" set to "));
client.println(value);
client.print(EOL); //char terminator
}
void analogCommand(WifiData client) {
int pin, value;
// Read pin number
pin = client.parseInt();
// If the next character is a '/' it means we have an URL
// with a value like: "/analog/5/120"
if (client.read() == '/') {
// Read value and execute command
value = client.parseInt();
analogWrite(pin, value);
// Send feedback to client
client.println("Status: 200 OK\n");
client.print(F("Pin D"));
client.print(pin);
client.print(F(" set to analog "));
client.println(value);
client.print(EOL); //char terminator
}
else {
// Read analog pin
value = analogRead(pin);
// Send feedback to client
client.println("Status: 200 OK\n");
client.print(F("Pin A"));
client.print(pin);
client.print(F(" reads analog "));
client.println(value);
client.print(EOL); //char terminator
}
}
void modeCommand(WifiData client) {
int pin;
// Read pin number
pin = client.parseInt();
// If the next character is not a '/' we have a malformed URL
if (client.read() != '/') {
client.println(F("error"));
client.print(EOL); //char terminator
return;
}
String mode = client.readStringUntil('\r');
if (mode == "input") {
pinMode(pin, INPUT);
// Send feedback to client
client.println("Status: 200 OK\n");
client.print(F("Pin D"));
client.print(pin);
client.println(F(" configured as INPUT!"));
client.print(EOL); //char terminator
return;
}
if (mode == "output") {
pinMode(pin, OUTPUT);
// Send feedback to client
client.println("Status: 200 OK\n");
client.print(F("Pin D"));
client.print(pin);
client.println(F(" configured as OUTPUT!"));
client.print(EOL); //char terminator
return;
}
client.print(F("error: invalid mode "));
client.println(mode);
client.print(EOL); //char terminator
}

Answer 1

The solution is to enable "Enable SLIP on serial port" in the SLIP section of the "Connectivity" Tab in the arduino web control.