#include <SPI.h> // used to communicated via the spi bus
#include <Ethernet.h> // used to communicate with the ethernet controller
#include "TimerOne.h" // Timer Interrupt set to 2 second for read sensors
#include <math.h>
#include <Wire.h>
#include <Adafruit_BMP085.h>
#define Bucket_Size 0.2794 // bucket size to trigger tip count
#define Bucket_Pin 3 // digital pin Bucket connected to
#define TX_Pin 8 // used to indicate web data tx
#define WindSensor_Pin (2) // The pin location of the anemometer sensor
#define WindVane_Pin (A2) // The pin the wind vane sensor is connected to
#define VaneOffset 70 // define the anemometer offset from magnetic north
Adafruit_BMP085 bmp;
volatile unsigned long tipCount; // bucket tip counter used in interrupt routine
volatile unsigned long contactTime; // Timer to manage any contact bounce in interrupt routine
volatile unsigned int timerCount; // used to determine 2.5sec timer count
volatile unsigned long rotations; // cup rotation counter used in interrupt routine
volatile unsigned long contactBounceTime; // Timer to avoid contact bounce in interrupt routine
long lastTipcount; // keeps track of bucket tips
float totalRainfall; // total amount of rainfall detected
volatile float windSpeed;
int vaneValue; // raw analog value from wind vane
int vaneDirection; // translated 0 - 360 direction
int calDirection; // converted value with offset applied
int lastDirValue; // last recorded direction value
float minTemp; // keeps track of the minimum recorded temp value
float maxTemp; // keeps track of the maximum recorded temp value
float maxWind; // keeps track of the maximum recorded wind value
// arayas we use for averaging sensor data
float temps[12]; // array of 12 temps to create a 2 minute average temp
float wspeeds[24]; // array of 24 wind speeds for 2 minute average wind speed
float wdirect[24]; // array of 24 wind directions for 2 minute average
// Here we setup the webserver. We need to supply a mac address. Some ethernet boards have a label attached
// with a mac address you can use.
byte mac[] = { 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED };
IPAddress ip(192,168,0,178); // IP address, may need to change depending on network
EthernetServer server(80); // create a server at port 80
void setup() {
// setup rain sensor values
lastTipcount = 0;
tipCount = 0;
totalRainfall = 0;
// setup anemometer values
lastDirValue = 0;
rotations = 0;
// setup timer values
timerCount = 0;
// disable the SD card by switching pin 4 high
pinMode(4, OUTPUT);
digitalWrite(4, HIGH);
// start the Ethernet connection and the server:
Ethernet.begin(mac, ip);
server.begin();
Serial.begin(9600);
if (!bmp.begin()) {
Serial.println("Could not find a valid BMP085 sensor, check wiring!");
while (1) {}
}
pinMode(TX_Pin,OUTPUT);
pinMode(Bucket_Pin, INPUT);
digitalWrite(Bucket_Pin, HIGH);
pinMode(WindSensor_Pin, INPUT);
attachInterrupt(digitalPinToInterrupt(Bucket_Pin), isr_rg, FALLING);
attachInterrupt(digitalPinToInterrupt(WindSensor_Pin), isr_rotation, FALLING);
// Setup the timer intterupt for 0.5 second
Timer1.initialize(500000);
Timer1.attachInterrupt(isr_timer);
sei();// Enable Interrupts
}
void loop() {
// bmp.readSensor();
// set temp min and max values
if(bmp.readTemperature() < minTemp) {
minTemp = bmp.readTemperature();
}
if(bmp.readTemperature() > maxTemp) {
maxTemp = bmp.readTemperature();
}
// set wind max values
if (windSpeed > maxWind) {
maxWind = windSpeed;
}
// update rainfall total if required
if(tipCount != lastTipcount) {
cli(); // disable intterupts
lastTipcount = tipCount;
totalRainfall = tipCount * Bucket_Size;
sei(); // enable interrupts
}
// listen for incoming clients
EthernetClient client = server.available();
if (client) {
// an http request ends with a blank line
boolean currentLineIsBlank = true;
while (client.connected()) {
if (client.available()) {
char c = client.read();
Serial.write(c);
// if you've gotten to the end of the line (received a newline
// character) and the line is blank, the http request has ended,
// so you can send a reply
if (c == '\n' && currentLineIsBlank) {
// send a standard http response header
digitalWrite(TX_Pin,HIGH);
client.println("HTTP/1.1 200 OK");
client.println("Content-Type: text/html");
client.println("Connection: close"); // the connection will be closed after completion of the response
client.println("Refresh: 10"); // refresh the page automatically every 5 sec
client.println();
client.println("<body bgcolor=\"black\">");//nye
client.print("<font color=\"white\">");//nye
client.println("<!DOCTYPE HTML>");
client.println("<html><body><h1>  Gammeldam Weather Control<br>   vers. 1.0.1</h1>");
digitalWrite(TX_Pin,HIGH); // Turn the TX LED on
client.print("<span style=\"font-size: 30px\";><br> Temperature is ");
client.print(bmp.readTemperature());
client.println(" °C<br />");
client.print(" Minim ");
client.print(minTemp);
client.println(" °C");
client.print(" Maxim ");
client.print(maxTemp);
client.println(" °C<br />");
// client.print("<br> Humidity is ");
// client.print(bme.getHumidity());
// client.println(" %<br />");
client.print("<br> Pressure is ");
client.print(bmp.readPressure()/100);
client.println(" mb<br />");
client.print("<br> Wind Speed is ");
client.print(windSpeed);
client.println(" ms<br />");
client.print(" ");
if(calDirection < 0.2)
client.print("Quit wind");
else if (windSpeed < 1.5)
client.print("Almost calm Wind");
else if (windSpeed < 3.3)
client.print("Weak wind");
else if (windSpeed < 5.4)
client.print("Light wind");
else if (windSpeed <7.9)
client.print("Moderate breeze");
else if (windSpeed < 10.7)
client.print("Fresh wind");
else if (windSpeed < 13.8)
client.print("Strong wind");
else if (windSpeed < 17.1)
client.print("High wind");
else if (windSpeed < 20.7)
client.print("Moderate gale");
else if (windSpeed < 24.4)
client.print("Fresh gale");
else if (windSpeed < 28.4)
client.print("Storm");
else if (windSpeed < 32.6)
client.print("Strong storm");
else
client.print("Hurricane");
client.println("<br />");
client.print("<br> Wind Max Speed is ");
client.print(maxWind);
client.println(" ms<br />");
client.print(" ");
if(calDirection < 0.2)
client.print("Quit wind");
else if (maxWind < 1.5)
client.print("Almost calm Wind");
else if (maxWind < 3.3)
client.print("Weak wind");
else if (maxWind < 5.4)
client.print("Light wind");
else if (maxWind <7.9)
client.print("Moderate breeze");
else if (maxWind < 10.7)
client.print("Fresh wind");
else if (maxWind < 13.8)
client.print("Strong wind");
else if (maxWind < 17.1)
client.print("High wind");
else if (maxWind < 20.7)
client.print("Moderate gale");
else if (maxWind < 24.4)
client.print("Fresh gale");
else if (maxWind < 28.4)
client.print("Storm");
else if (maxWind < 32.6)
client.print("Strong storm");
else
client.print("Hurricane");
client.println("<br />");
getWindDirection();
client.print("<br> Direction is ");
client.print(calDirection);
client.println(" °");
if(calDirection < 22)
client.print(" = North");
else if (calDirection < 67)
client.print(" = NorthEast");
else if (calDirection < 112)
client.print(" = East");
else if (calDirection < 157)
client.print(" = SouthEast");
else if (calDirection < 212)
client.print(" = South");
else if (calDirection < 247)
client.print(" = SouthWest");
else if (calDirection < 292)
client.print(" = West");
else if (calDirection < 337)
client.print(" = NorthWest");
else
client.print(" = N");
client.println(" <br />");
client.print("<br> Rainfall is ");
client.print(totalRainfall);
client.println(" mm<br />");
//client.print(" Mini ");
//client.print(minTemp);
//client.println(" °C<br />");
//client.print(" Maxi ");
//client.print(maxTemp);
//client.println(" °C<br />");
client.println("</html>");
digitalWrite(TX_Pin,LOW); // Turn the TX LED off
break;
}
if (c == '\n') {
// you're starting a new line
currentLineIsBlank = true;
} else if (c != '\r') {
// you've gotten a character on the current line
currentLineIsBlank = false;
}
}
}
}
// give the web browser time to receive the data
delay(1);
// close the connection:
client.stop();
// Serial.println("client disconnected");
Ethernet.maintain();
}
// isr routine for timer interrupt
void isr_timer() {
timerCount++;
if(timerCount == 5)
{
// convert to ms using the formula 2.4 km/t = (2.4 km/t)*(1000 m/km)*(1/3600 t/s)
// = 2/3 m/s = 0.667 m/s
windSpeed = rotations * 0.667;
rotations = 0;
timerCount = 0;
}
}
// Interrrupt handler routine that is triggered when the rg-11 detects rain
void isr_rg() {
if((millis() - contactTime) > 15 ) { // debounce of sensor signal
tipCount++;
contactTime = millis();
}
}
// end of rg-11 rain detection interrupt handler
// interrupt handler to increment the rotation count for wind speed
void isr_rotation () {
if ((millis() - contactBounceTime) > 15 ) { // debounce the switch contact.
rotations++;
contactBounceTime = millis();
}
}
// Get Wind Direction
void getWindDirection() {
vaneValue = analogRead(WindVane_Pin);
vaneDirection = map(vaneValue, 0, 1023, 0, 360);
calDirection = vaneDirection + VaneOffset;
if(calDirection > 360)
calDirection = calDirection - 360;
if(calDirection < 0)
calDirection = calDirection + 360;
}