Sketch: #2
What Is My Ip
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post remote ip info to website
sleep aproximatly 13 minutes to prevent spam.
repeat
The next version will implement authentication.
I need to work on the formatting of the code block, but the base is there for now.
---- BEGIN ----
#include <SPI.h>
#include <Ethernet.h>
int current_count = 9000; //set counter high to force an initial run.
int max_count = 60 * 11; //sleeping for about 11 minutes
// assign a MAC address for the ethernet controller.
// fill in your address here:
byte mac[] = {
0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED
};
// Set the static IP address to use if the DHCP fails to assign
IPAddress ip(192, 168, 0, 177);
IPAddress myDns(192, 168, 0, 1);
// initialize the library instance:
EthernetClient client;
bool request_to_die = false;
char get_ip_from_this_server[] = "checkip.dyndns.com"; // test web page server
char server[] = "138.197.230.242"; // also change the Host line in httpRequest()
unsigned long lastConnectionTime = 0; // last time you connected to the server, in milliseconds
const unsigned long postingInterval = 10 * 1000; // delay between updates, in milliseconds
void setup() {
//Ethernet.init(10); // Most Arduino shields
// start serial port:
Serial.begin(9600);
while (!Serial) {
; // wait for serial port to connect. Needed for native USB port only
}
// start the Ethernet connection:
Serial.println("Initialize Ethernet with DHCP:");
if (Ethernet.begin(mac) == 0) {
Serial.println("Failed to configure Ethernet using DHCP");
// Check for Ethernet hardware present
if (Ethernet.hardwareStatus() == EthernetNoHardware) {
Serial.println("Ethernet shield was not found. Sorry, can't run without hardware. :(");
while (true) {
delay(1); // do nothing, no point running without Ethernet hardware
}
}
if (Ethernet.linkStatus() == LinkOFF) {
Serial.println("Ethernet cable is not connected.");
}
// try to congifure using IP address instead of DHCP:
Ethernet.begin(mac, ip, myDns);
Serial.print("My IP address: ");
Serial.println(Ethernet.localIP());
} else {
Serial.print(" DHCP assigned IP ");
Serial.println(Ethernet.localIP());
}
// give the Ethernet shield a second to initialize:
delay(1000);
}
void loop() {
if (client.available()) {
char c = client.read();
Serial.write(c);
}
if (millis() - lastConnectionTime > postingInterval) {
if (current_count < max_count){
current_count += 1;
delay(1000);
Serial.print("[");
Serial.print(current_count);
Serial.print("/");
Serial.print(max_count);
Serial.print("] ");
Serial.println("Sleeping for a moment.");
}else{
Serial.println("Prepping to post!");
current_count = 0; //reset current count
httpPost();
}
}
}
// this method makes a HTTP connection to the server:
void httpPost() {
client.stop();
String appartment_ip = get_external_ip();
String data;
data+="sensor_model=Arduino Uno (With Ethernet Shield)";
data+="&sensor_location=Apartment - Bedroom";
data+="&message="+ appartment_ip; // Submitting data
// if there's a successful connection:
if (client.connect(server, 80)) {
Serial.println("connecting...");
// send the HTTP GET request:
client.println("POST /api/motion_readings/ HTTP/1.1");
client.println("Host: 138.197.230.242");
client.println("Content-Type: application/x-www-form-urlencoded");
client.println("User-Agent: arduino-ethernet");
client.println("Connection: close");
client.print("Content-Length: ");
client.println(data.length());
client.println();
client.print(data);
client.println();
// note the time that the connection was made:
lastConnectionTime = millis();
} else {
// if you couldn't make a connection:
Serial.println("connection failed");
}
}
String get_external_ip(){
request_to_die = true;
String byte_string = "";
if (client.connect(get_ip_from_this_server, 80)) { //starts client connection, checks for connection
Serial.println("connected");
client.println("GET / HTTP/1.0"); //download text
client.println("Host: checkip.dyndns.com");
client.println(); //end of get request
}
else {
Serial.println("connection failed"); //error message if no client connect
Serial.println();
}
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
//Serial.print(c); //prints byte to serial monitor
byte_string.concat(String(c));
}
String remote_ip = split_string(byte_string);
//client.stop(); //stop client
delay(1000);
return remote_ip;
}
String split_string(String input_string){
String result = "127.9.9.1";
int starting_index = input_string.indexOf("Address: ");
int ending_index = input_string.indexOf("</body></html>");
//shift the substring
result = input_string.substring(starting_index + 9, ending_index);
return result;
}