Hello,
I use an Arduino Uno a wireless shield and the HC-SR04 sensor.
I have the following code and I am trying to do the following.
If the distance sensor gets a signal below 110cm to send me an email(not only once, every time that distance occurred) and have that distance in the body of the email also.
This is the code I use.
Any thoughts and help are welcome.
Thanks, Emmanuel
#include <SPI.h>
#include <WiFi.h>
//This is for the sensor
#define echoPin 4 // Echo Pin
#define trigPin 3 // Trigger Pin
int maximumRange = 250; // Maximum range needed
int minimumRange = 1; // Minimum range needed
long duration, distance; // Duration used to calculate distance
//End of code
char ssid[] = "MYSSID"; // your network SSID (name)
char pass[] = "MYPASSWORD"; // your network password
int keyIndex = 0; // your network key Index number (needed only for WEP)
byte mac[] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
IPAddress ip( 192,168,1,101 ); // ipaddress obtained from access point
IPAddress gateway( 192,168,1,1 );
IPAddress subnet( 255,255,255,0 );
char server[] = "mail.server.com";
int port = 25;
int status = WL_IDLE_STATUS;
WiFiClient client;
void setup() {
Serial.begin(9600);
//This is for the sensor
pinMode(trigPin, OUTPUT);
pinMode(echoPin, INPUT);
//End of code
while (!Serial) {
; // wait for serial port to connect. Needed for native USB port only
}
// check for the presence of the shield:
if (WiFi.status() == WL_NO_SHIELD) {
Serial.println("WiFi shield not present");
// don't continue:
while (true);
}
String fv = WiFi.firmwareVersion();
if (fv != "1.1.0") {
Serial.println("Please upgrade the firmware");
}
// attempt to connect to Wifi network:
while (status != WL_CONNECTED) {
Serial.print("Attempting to connect to WPA SSID: ");
Serial.println(ssid);
// Connect to WPA/WPA2 network:
status = WiFi.begin(ssid, pass);
// wait 10 seconds for connection:
delay(10000);
}
// you're connected now, so print out the data:
Serial.print("You're connected to the network");
printCurrentNet();
printWifiData();
delay(2000);
//Serial.println("Ready. Press 'e' to send.");
//delay(2000);
}
void loop() {
readDistance();
if(distance>minimumRange && distance < maximumRange)
{
Serial.println(distance);
}
else if(Serial.println("Out of range..."));
else if(distance < 110)
{
Serial.println(distance);
if(sendEmail()) Serial.println(F("Email sent"));
else Serial.println(F("Email failed"));
}
delay(50);
}
int readDistance()
{
digitalWrite(trigPin, LOW);
delayMicroseconds(2);
digitalWrite(trigPin, HIGH);
delayMicroseconds(10);
digitalWrite(trigPin, LOW);
duration = pulseIn(echoPin, HIGH);
distance = duration/58.2;
}
byte sendEmail()
{
byte thisByte = 0;
byte respCode;
Serial.println("here");
if(client.connect(server,port) == 1) {
Serial.println(F("connected"));
} else {
Serial.println(F("connection failed"));
return 0;
}
if(!eRcv()) return 0;
Serial.println(F("Sending hello"));
// replace 1.2.3.4 with your Arduino's ip
client.println("EHLO 192.168.1.101");
if(!eRcv()) return 0;
Serial.println(F("Sending auth login"));
client.println("auth login");
if(!eRcv()) return 0;
Serial.println(F("Sending User"));
// Change to your base64 encoded user
// https://www.base64encode.org/
client.println("EMAIL");
if(!eRcv()) return 0;
Serial.println(F("Sending Password"));
// change to your base64 encoded password
// https://www.base64encode.org/
client.println("PASSWORD");
if(!eRcv()) return 0;
// change to your email address (sender)
Serial.println(F("Sending From"));
client.println("MAIL FROM: <mail@server.com>");
if(!eRcv()) return 0;
// change to recipient address
Serial.println(F("Sending To"));
client.println("RCPT TO: <mail@server.com>");
if(!eRcv()) return 0;
Serial.println(F("Sending DATA"));
client.println("DATA");
if(!eRcv()) return 0;
Serial.println(F("Sending email"));
// change to recipient address
client.println("To: You <mail@server.com>");
// change to your address
client.println("From: You <mail@server.com>");
client.println("Subject: Arduino email test\r\n");
client.println("This is from my Arduino!");
client.println("This is the code alert!");
//distance trigger alarm
// I would like to have here the distance tiriggered
client.println(distance);
client.println(".");
if(!eRcv()) return 0;
Serial.println(F("Sending QUIT"));
client.println("QUIT");
if(!eRcv()) return 0;
client.stop();
Serial.println(F("disconnected"));
return 1;
}
byte eRcv()
{
byte respCode;
byte thisByte;
int loopCount = 0;
while(!client.available()) {
delay(1);
loopCount++;
// if nothing received for 10 seconds, timeout
if(loopCount > 10000) {
client.stop();
Serial.println(F("\r\nTimeout"));
return 0;
}
}
respCode = client.peek();
while(client.available())
{
thisByte = client.read();
Serial.write(thisByte);
}
if(respCode >= '4')
{
efail();
return 0;
}
return 1;
}
void efail()
{
byte thisByte = 0;
int loopCount = 0;
client.println(F("QUIT"));
while(!client.available()) {
delay(1);
loopCount++;
// if nothing received for 10 seconds, timeout
if(loopCount > 10000) {
client.stop();
Serial.println(F("\r\nTimeout"));
return;
}
}
while(client.available())
{
thisByte = client.read();
Serial.write(thisByte);
}
client.stop();
Serial.println(F("disconnected"));
}
void printCurrentNet() {
// print the SSID of the network you're attached to:
Serial.print(F("SSID: "));
Serial.println(WiFi.SSID());
// print the MAC address of the router you're attached to:
byte bssid[6];
WiFi.BSSID(bssid);
Serial.print(F("BSSID: "));
Serial.print(bssid[5],HEX);
Serial.print(F(":"));
Serial.print(bssid[4],HEX);
Serial.print(F(":"));
Serial.print(bssid[3],HEX);
Serial.print(F(":"));
Serial.print(bssid[2],HEX);
Serial.print(F(":"));
Serial.print(bssid[1],HEX);
Serial.print(F(":"));
Serial.println(bssid[0],HEX);
// print the received signal strength:
long rssi = WiFi.RSSI();
Serial.print(F("signal strength (RSSI):"));
Serial.println(rssi);
// print the encryption type:
byte encryption = WiFi.encryptionType();
Serial.print(F("Encryption Type:"));
Serial.println(encryption,HEX);
}
void printWifiData() {
// print your WiFi shield's IP address:
IPAddress ip = WiFi.localIP();
Serial.print(F("IP Address: "));
Serial.println(ip);
Serial.println(ip);
// print your MAC address:
byte mac[6];
WiFi.macAddress(mac);
Serial.print(F("MAC address: "));
Serial.print(mac[5],HEX);
Serial.print(F(":"));
Serial.print(mac[4],HEX);
Serial.print(F(":"));
Serial.print(mac[3],HEX);
Serial.print(F(":"));
Serial.print(mac[2],HEX);
Serial.print(F(":"));
Serial.print(mac[1],HEX);
Serial.print(F(":"));
Serial.println(mac[0],HEX);
// print your subnet mask:
IPAddress subnet = WiFi.subnetMask();
Serial.print(F("NetMask: "));
Serial.println(subnet);
// print your gateway address:
IPAddress gateway = WiFi.gatewayIP();
Serial.print(F("Gateway: "));
Serial.println(gateway);
}