Robotto/lighthouse.ino

## lighthouse.ino
#include <Arduino.h>

#include <ESP8266WiFi.h>
#include <WiFiClient.h>
#include <ESP8266WebServer.h>
#include <ESP8266mDNS.h>

//Function declarations:
void handleRoot();
void handleToggle();
void handleNotFound();

//WIFI SETTINGS:
const char* ssid     = "Vammen Camping";

//Batt:
static unsigned battPin=A0;
unsigned long ADCfiltered=1; //default to 0V
float vBatt=14;
unsigned int filterBeta=10;


//init http server on port 80:
ESP8266WebServer server(80);

//hardware stuff:
const unsigned int relayPin = D1;
bool lightState=true; // True=on , false=off


void setup() {
  Serial.begin(115200);
  WiFi.hostname("lighthouse");
  WiFi.mode(WIFI_STA); //neccesary?
  WiFi.begin(ssid);
  pinMode(relayPin,OUTPUT);
  digitalWrite(relayPin,lightState);

  for(int a=0; a<=filterBeta; a++) ADCfiltered=((ADCfiltered*filterBeta)+analogRead(battPin))/(filterBeta+1); //low pass filtering of ADC0

  vBatt=(float)14/(float)1023*(float)ADCfiltered; //ADC -> voltage

  delay(500);

  //Serial.print("ADCfiltered @:");
  //Serial.println(ADCfiltered);

  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }

  Serial.println();
  Serial.print("WiFi up!");
  Serial.print("  IPv4: ");
  Serial.println(WiFi.localIP());

  if (MDNS.begin("lighthouse")) {
    Serial.println("MDNS responder started, see you at http://lighthouse.local");
  }

  server.on("/", handleRoot);
  server.on("/toggle", handleToggle);
  server.onNotFound(handleRoot);

  server.begin();
  Serial.println("HTTP server started");

}

//only make conversions every 1/4 seconds, to make time for web stuff
unsigned long lastConversion = 0;
unsigned long conversionDelay = 250; //ms between ADC conversions
void loop() {

if (millis()> lastConversion+conversionDelay){
	for(int a=0; a<=filterBeta; a++) ADCfiltered=((ADCfiltered*filterBeta)+analogRead(battPin))/(filterBeta+1); //low pass filtering of ADC0
	vBatt=(float)14/(float)1023*(float)ADCfiltered; //ADC -> voltage
	lastConversion=millis();
	// Serial.print("ADCfiltered @:");
	// Serial.println(ADCfiltered);
	// Serial.print("vBatt @:");
	// Serial.println(vBatt);
}

if(vBatt<11) digitalWrite(relayPin,LOW);

server.handleClient();

yield();

}

//http stuff:
void handleRoot() {
  Serial.println("client trying to access /");
  //server.send(200, "text/plain", "hello from esp8266!");
  server.sendContent("HTTP/1.1 200 OK\r\n"); //send new p\r\nage
  server.sendContent("Content-Type: text/html\r\n");
  server.sendContent("\r\n");
  server.sendContent("<HTML>\r\n");
  server.sendContent("<HEAD>\r\n");
  server.sendContent("<meta name=\"viewport\" content=\"width=device-width, initial-scale=1\">"); //zoom to width of window
  server.sendContent("<meta name='apple-mobile-web-app-capable' content='yes' />\r\n");
  server.sendContent("<meta name='apple-mobile-web-app-status-bar-style' content='black-translucent' />\r\n");
  server.sendContent("<link rel='stylesheet' type='text/css' href='https://moore.dk/doorcss.css' />\r\n"); //External CSS
  server.sendContent("<TITLE>Sommerhack 2016 Lighthouse.</TITLE>\r\n");
  server.sendContent("</HEAD>\r\n");
  server.sendContent("<BODY>\r\n");
  if(lightState) server.sendContent("<H1>Lighthouse is on.</H1>\r\n");
  else server.sendContent("<H1>Lighthouse is off.</H1>\r\n");
  server.sendContent("<hr />\r\n");
  server.sendContent("<H2>vBatt: ");
  server.sendContent(String(vBatt));
  server.sendContent("</H2>\r\n");
  //server.sendContent("<br />\r\n");
  server.sendContent("<br />\r\n");
  if(lightState) server.sendContent("<a class=\"red\" href=\"/toggle\"\">Shut that lighthouse down!</a>\r\n");
  else server.sendContent("<a href=\"/toggle\"\">Light that lighthouse up!</a>\r\n");
  server.sendContent("<br />\r\n");
  if(!lightState) server.sendContent("<H3>The lighthouse takes about 7 seconds to heat up</H3>");
  server.sendContent("</BODY>\r\n");
  server.sendContent("</HTML>\r\n");


}

void handleToggle(){

	lightState=!lightState;
	digitalWrite(relayPin,lightState);
	if(lightState)	Serial.println("light on..");
	else Serial.println("light off..");
	//reply to client with redirect to root, to update status of light in browser
	server.sendContent("HTTP/1.1 303 See Other\r\n");
  	server.sendContent("Location: /\r\n");
  	server.sendContent("\r\n"); //EOT
}
	#include <Arduino.h>

	#include <ESP8266WiFi.h>
	#include <WiFiClient.h>
	#include <ESP8266WebServer.h>
	#include <ESP8266mDNS.h>

	//Function declarations:
	void handleRoot();
	void handleToggle();
	void handleNotFound();

	//WIFI SETTINGS:
	const char* ssid = "Vammen Camping";

	//Batt:
	static unsigned battPin=A0;
	unsigned long ADCfiltered=1; //default to 0V
	float vBatt=14;
	unsigned int filterBeta=10;


	//init http server on port 80:
	ESP8266WebServer server(80);

	//hardware stuff:
	const unsigned int relayPin = D1;
	bool lightState=true; // True=on , false=off


	void setup() {
	Serial.begin(115200);
	WiFi.hostname("lighthouse");
	WiFi.mode(WIFI_STA); //neccesary?
	WiFi.begin(ssid);
	pinMode(relayPin,OUTPUT);
	digitalWrite(relayPin,lightState);

	for(int a=0; a<=filterBeta; a++) ADCfiltered=((ADCfiltered*filterBeta)+analogRead(battPin))/(filterBeta+1); //low pass filtering of ADC0

	vBatt=(float)14/(float)1023*(float)ADCfiltered; //ADC -> voltage

	delay(500);

	//Serial.print("ADCfiltered @:");
	//Serial.println(ADCfiltered);

	while (WiFi.status() != WL_CONNECTED) {
	delay(500);
	Serial.print(".");
	}

	Serial.println();
	Serial.print("WiFi up!");
	Serial.print(" IPv4: ");
	Serial.println(WiFi.localIP());

	if (MDNS.begin("lighthouse")) {
	Serial.println("MDNS responder started, see you at http://lighthouse.local");
	}

	server.on("/", handleRoot);
	server.on("/toggle", handleToggle);
	server.onNotFound(handleRoot);

	server.begin();
	Serial.println("HTTP server started");

	}

	//only make conversions every 1/4 seconds, to make time for web stuff
	unsigned long lastConversion = 0;
	unsigned long conversionDelay = 250; //ms between ADC conversions
	void loop() {

	if (millis()> lastConversion+conversionDelay){
	for(int a=0; a<=filterBeta; a++) ADCfiltered=((ADCfiltered*filterBeta)+analogRead(battPin))/(filterBeta+1); //low pass filtering of ADC0
	vBatt=(float)14/(float)1023*(float)ADCfiltered; //ADC -> voltage
	lastConversion=millis();
	// Serial.print("ADCfiltered @:");
	// Serial.println(ADCfiltered);
	// Serial.print("vBatt @:");
	// Serial.println(vBatt);
	}

	if(vBatt<11) digitalWrite(relayPin,LOW);

	server.handleClient();

	yield();

	}

	//http stuff:
	void handleRoot() {
	Serial.println("client trying to access /");
	//server.send(200, "text/plain", "hello from esp8266!");
	server.sendContent("HTTP/1.1 200 OK\r\n"); //send new p\r\nage
	server.sendContent("Content-Type: text/html\r\n");
	server.sendContent("\r\n");
	server.sendContent("<HTML>\r\n");
	server.sendContent("<HEAD>\r\n");
	server.sendContent("<meta name=\"viewport\" content=\"width=device-width, initial-scale=1\">"); //zoom to width of window
	server.sendContent("<meta name='apple-mobile-web-app-capable' content='yes' />\r\n");
	server.sendContent("<meta name='apple-mobile-web-app-status-bar-style' content='black-translucent' />\r\n");
	server.sendContent("<link rel='stylesheet' type='text/css' href='https://moore.dk/doorcss.css' />\r\n"); //External CSS
	server.sendContent("<TITLE>Sommerhack 2016 Lighthouse.</TITLE>\r\n");
	server.sendContent("</HEAD>\r\n");
	server.sendContent("<BODY>\r\n");
	if(lightState) server.sendContent("<H1>Lighthouse is on.</H1>\r\n");
	else server.sendContent("<H1>Lighthouse is off.</H1>\r\n");
	server.sendContent("<hr />\r\n");
	server.sendContent("<H2>vBatt: ");
	server.sendContent(String(vBatt));
	server.sendContent("</H2>\r\n");
	//server.sendContent("<br />\r\n");
	server.sendContent("<br />\r\n");
	if(lightState) server.sendContent("<a class=\"red\" href=\"/toggle\"\">Shut that lighthouse down!</a>\r\n");
	else server.sendContent("<a href=\"/toggle\"\">Light that lighthouse up!</a>\r\n");
	server.sendContent("<br />\r\n");
	if(!lightState) server.sendContent("<H3>The lighthouse takes about 7 seconds to heat up</H3>");
	server.sendContent("</BODY>\r\n");
	server.sendContent("</HTML>\r\n");


	}

	void handleToggle(){

	lightState=!lightState;
	digitalWrite(relayPin,lightState);
	if(lightState) Serial.println("light on..");
	else Serial.println("light off..");
	//reply to client with redirect to root, to update status of light in browser
	server.sendContent("HTTP/1.1 303 See Other\r\n");
	server.sendContent("Location: /\r\n");
	server.sendContent("\r\n"); //EOT
	}