1 files changed, 84 insertions, 0 deletions
diff --git a/4-ethernet-servomotore.ino b/4-ethernet-servomotore.ino
new file mode 100644
index 0000000..a4045e3
--- /dev/null
+++ b/4-ethernet-servomotore.ino
@@ -0,0 +1,84 @@
+#include <SPI.h>
+#include <Ethernet.h>
+
+
+#include <Servo.h> 
+ 
+Servo myservo;  // create servo object to control a servo 
+int servopin = 3;
+
+byte mac[] = { 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED }; //physical mac address
+
+char serverName[] = "codice-sorgente.it";
+char serverPage[] = "/UTCTime.php?zone=Europe/Rome";
+EthernetClient client;
+
+//////////////////////
+
+void setup(){
+
+  if (Ethernet.begin(mac) == 0) {
+    Serial.println("Failed to configure Ethernet using DHCP");
+    // no point in carrying on, so do nothing forevermore:
+    while(true);
+  }
+
+  Serial.begin(9600); 
+  myservo.attach(servopin);
+  Serial.println("Init");
+}
+
+void loop(){
+  delay(3000); 
+  sendGET();
+} 
+
+//////////////////////////
+
+void sendGET() //client function to send/receive GET request data.
+{
+  if (client.connect(serverName, 80)) {  //starts client connection, checks for connection
+    Serial.println("connected");
+//    client.println("GET /ioprogrammo/UTCTime.php HTTP/1.0"); //download text
+    client.print("GET ");
+    client.print(serverPage);
+    client.println(" HTTP/1.0");
+    client.print("Host: ");
+    client.println(serverName);
+    client.println(); //end of get request
+  } 
+  else {
+    Serial.println("connection failed"); //error message if no client connect
+    Serial.println();
+    return;
+  }
+
+String response = "";
+  while(client.connected() && !client.available()) delay(1); //waits for data
+  while (client.connected() || client.available()) { //connected or data available
+    char c = client.read(); //gets byte from ethernet buffer
+    response += c;
+  }
+
+  Serial.println(response);
+  int da = response.indexOf("<")+1;
+  int a = response.indexOf(">");
+  String pageValue = response.substring(da,a);
+
+  da = pageValue.indexOf(" ")+1;
+  a = pageValue.indexOf(":",da);
+  String hour = pageValue.substring(da,a);
+  int ora = hour.toInt();
+  int rotazione = map(ora, 0, 23, 0, 180); //può essere 90 invece di 180
+  Serial.print("Writing this value to servo: ");
+  Serial.println(rotazione);
+  myservo.write(rotazione);
+
+  Serial.println();
+  Serial.println("disconnecting.");
+  Serial.println("==================");
+  Serial.println();
+  client.stop(); //stop client
+
+}
+