Hello,
As it took me sometime to have it working as I wanted, I thought some other could be interested.
I hope somebody can benefit from this.
Few months back I saw this guy who created a project where when the mailman opens the mailbox, it sends a message onto a smartphone.
I have no clue if I'm going to use this but I found it funny ;-)
For the moment it's a button that simulates the opening of the mailbox and I used Prowl on my iPhone to be notified.
// Include libraries
#include <SPI.h>
#include <Ethernet.h>
#include <HTTPClient.h>
// Variables for ethernet connection
byte mac[] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }; // enter your MAC address here
byte serverIP[] = { 209,20,72,170 }; // api.prowlapp.com
EthernetClient client;
// Define Prowl API information
#define PROWL_API_KEY "00000000000000000000000000000000000" // enter your Prowl API key here
#define PROWL_API_SRV "api.prowlapp.com"
#define PROWL_API_URL "http://api.prowlapp.com/publicapi/add"
// Define notification application, event and description
#define PUSH_APPLICATION "Arduino"
#define PUSH_EVENT "Mailbox"
#define PUSH_DESCRIPTION "You've got mail!"
// Variables in regard to timing
const unsigned long sendInterval = 60000; // 1 minute minimum between notifications
unsigned long currentMillis = 0;
unsigned long previousMillis = 0;
// Variables in regard to INPUT / OUTPUT
int switchPin = 2;
int switchCurrentState;
int switchPreviousState;
void setup() {
// Start the serial port
Serial.begin(9600);
// Start the ethernet connection
Serial.println("Configuring Ethernet Connection:");
if( Ethernet.begin(mac) == 0) {
Serial.println("Failed to configure Ethernet using DHCP");
// No point in carrying on, so do nothing forevermore
for(;;)
;
}
// Connection successful, display IP address
Serial.println("Connection successful");
Serial.print("My IP address: ");
for (byte thisByte = 0; thisByte < 4; thisByte++) {
// print the value of each byte of the IP address:
Serial.print(Ethernet.localIP()[thisByte], DEC);
Serial.print(".");
}
Serial.println();
}
void loop() {
// Read switch value
switchCurrentState = digitalRead(switchPin);
delay(10); // Fix to button boucing issue
if (switchCurrentState == digitalRead(switchPin)) { // Read switch value a second time to fix button boucing issue
// Get number of milliseconds since the Arduino board began running the current program
currentMillis = millis();
// If switch state changed, is LOW and delay has expired
if (switchCurrentState != switchPreviousState && switchCurrentState == LOW && (previousMillis == 0 || currentMillis - previousMillis >= sendInterval)) {
// Set previousMillis as currentMillis
previousMillis = currentMillis;
// Send message
char apikey[] = PROWL_API_KEY;
char application[] = PUSH_APPLICATION;
char event[] = PUSH_EVENT;
char description[] = PUSH_DESCRIPTION;
sendProwlNotification(apikey, application, event, description);
}
// Set current value as last value for next iteration
switchPreviousState = switchCurrentState;
}
}
void sendProwlNotification(char* apikey, char* application, char* event, char* description) {
char url[] = "";
sendProwlNotification(apikey, application, event, description, 0, url);
}
void sendProwlNotification(char* apikey, char* application, char* event, char* description, int priority) {
char url[] = "";
sendProwlNotification(apikey, application, event, description, priority, url);
}
void sendProwlNotification(char* apikey, char* application, char* event, char* description, int priority, char* url) {
// Convert priority from int to char*
char sPriority[1];
sprintf(sPriority, "%d", priority);
// Create HTTPClient
char serverHostName[] = PROWL_API_SRV;
HTTPClient client(serverHostName, serverIP);
// Create POST parameters
http_client_parameter postParameters[] = {
{"apikey", apikey},
{"application", application},
{"event", event},
{"description", description},
{"priority", sPriority},
{NULL, NULL}
};
// Send POST to server
char data[] = "";
char apiURL[] = PROWL_API_URL;
FILE* result = client.postURI(apiURL, postParameters, data);
// Could we connect to API server ?
if (result == NULL) {
Serial.println("Failed to connect to API server");
} else {
// Check error code
int returnCode = client.getLastReturnCode();
if(returnCode == 200) {
// Successfully sent notification
Serial.println("Notification sent!");
} else {
// Display error code on serial
Serial.print("Error sending notification! Error Code: ");
Serial.println(returnCode);
}
client.closeStream(result);
}
}
If you have any question or suggestion, I'm there.
Thanks
