I use the code of the sketch which is called “Bridge”,but it doesn’t work.
And I use console to debug,I note that the first “client.readStringUntil(’/’)” will return “GET” so I think it looks like a HTTP socket package.Am I right?
So I change the code to this and it works finally,but the problem is,why the code in my Arduino IDE have this problem?
And why the programmers don’t fix it?
Or it works on other Arduinos?
Below is my code.
/*
Arduino Yún Bridge example
This example for the Arduino Yún shows how to use the
Bridge 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://arduino.cc/en/Tutorial/Bridge
*/
#include <Bridge.h>
#include <Console.h>
#include <YunServer.h>
#include <YunClient.h>
// Listen on default port 5555, the webserver on the Yún
// will forward there all the HTTP requests for us.
YunServer server;
void setup() {
// Bridge startup
pinMode(13, OUTPUT);
digitalWrite(13, LOW);
Bridge.begin();
Console.begin();
while (!Console);
//You can still use if you don't launch console.
Console.println("Init");
digitalWrite(13, HIGH);
// Listen for incoming connection not only from localhost
server.noListenOnLocalhost();
server.begin();
}
void loop() {
// Get clients coming from server
YunClient client = server.accept();
// There is a new client?
if (client) {
// Process request
Console.println("Get a client.");
process(client);
// Close connection and free resources.
client.stop();
}
delay(50); // Poll every 50ms
}
void process(YunClient client) {
// read the command
String command = client.readStringUntil('/');
//GET or POST
command = client.readStringUntil('/');
Console.println(command);
if(command != "arduino"){
Console.println("Maybe not for arduino.");
return;
}
command = client.readStringUntil('/');
Console.println(command);
// 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(YunClient 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.print(F("Pin D"));
client.print(pin);
client.print(F(" set to "));
client.println(value);
// Update datastore key with the current pin value
String key = "D";
key += pin;
Bridge.put(key, String(value));
}
void analogCommand(YunClient 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.print(F("Pin D"));
client.print(pin);
client.print(F(" set to analog "));
client.println(value);
// Update datastore key with the current pin value
String key = "D";
key += pin;
Bridge.put(key, String(value));
}
else {
// Read analog pin
value = analogRead(pin);
// Send feedback to client
client.print(F("Pin A"));
client.print(pin);
client.print(F(" reads analog "));
client.println(value);
// Update datastore key with the current pin value
String key = "A";
key += pin;
Bridge.put(key, String(value));
}
}
void modeCommand(YunClient 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"));
return;
}
String mode = client.readStringUntil('\r');
if (mode == "input") {
pinMode(pin, INPUT);
// Send feedback to client
client.print(F("Pin D"));
client.print(pin);
client.print(F(" configured as INPUT!"));
return;
}
if (mode == "output") {
pinMode(pin, OUTPUT);
// Send feedback to client
client.print(F("Pin D"));
client.print(pin);
client.print(F(" configured as OUTPUT!"));
return;
}
client.print(F("error: invalid mode "));
client.print(mode);
}