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Created January 9, 2016 01:13
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/*
Basic Arduino example for K-Series sensor
Created by Jason Berger
Co2meter.com
Rewritten for WiFi-functionality of an ESP8266
and connected to a Senseair S8 CO2-sensor
20151116: Added Philips Hue functionality
by Markus Ulsass
*/
#include <ESP8266WiFi.h>
const char* ssid = "yourSSIDHere";
const char* password = "yourPasswordHere";
// const char* host = "192.168.178.42"; // VM Ubunto local IP
// const char* host = "172.16.10.248"; // VM Ubunto local IP
const char* host = "IP.of.your.platform"; // AAL markus1.protonet.info
byte valCo2Status = 0;
byte readCO2[] = {0xFE, 0X44, 0X00, 0X08, 0X02, 0X9F, 0X25}; //Command packet to read Co2 (see app note)
byte response[] = {0, 0, 0, 0, 0, 0, 0}; //create an array to store the response
//multiplier for value. default is 1. set to 3 for K-30 3% and 10 for K-33 ICB
int valMultiplier = 1;
// Philips Hue settings
const char* bridge_ip = "172.16.10.49"; // Hue Bridge IP
const int port = 80;
String user = "3888d6d56bbdd14a78eb87cf131ec0cd";
String light = "2";
// Philips Hue commands
String hue_green = "{\"on\":true, \"sat\":254, \"bri\":64,\"hue\":25500}";
String hue_yellow = "{\"on\":true, \"sat\":254, \"bri\":128,\"hue\":12750}";
String hue_red = "{\"on\":true, \"sat\":254, \"bri\":192,\"hue\":0}";
void setup()
{
Serial.begin(9600); //Opens the virtual serial port with a baud of 9600
Serial.swap(); // Serial on ESP8266 normally connected to GPIO1 (TX) and GPIO3 (RX), swap
// maps it to GPIO15 (TX) and GPIO13 (RX) which is Pin 8 and 7 on ESPToy
WiFi.begin(ssid, password);
while (WiFi.status() != WL_CONNECTED) {
delay(500);
}
}
void sendRequest(byte packet[])
{
while (!Serial.available()) //keep sending request until we start to get a response
{
Serial.write(readCO2, 7);
delay(50);
}
int timeout = 0; //set a timeoute counter
while (Serial.available() < 7 ) //Wait to get a 7 byte response
{
timeout++;
if (timeout > 10) //if it takes to long there was probably an error
{
while (Serial.available()) //flush whatever we have
Serial.read();
break; //exit and try again
}
delay(50);
}
for (int i = 0; i < 7; i++)
{
response[i] = Serial.read();
}
}
unsigned long getValue(byte packet[])
{
int high = packet[3]; //high byte for value is 4th byte in packet in the packet
int low = packet[4]; //low byte for value is 5th byte in the packet
unsigned long val = high * 256 + low; //Combine high byte and low byte with this formula to get value
return val * valMultiplier;
}
// Function to control Philips Hue light by sending
// a HTTP-PUT
void hueControl(String color) {
// Serial.print("Connecting to ");
// Serial.println(bridge_ip);
// Use WiFiClient class to create TCP connections
WiFiClient client;
if (!client.connect(bridge_ip, port)) {
// Serial.println("Connection failed");
return;
}
// This will send the request to the server
client.println("PUT /api/" + user + "/lights/" + light + "/state");
client.println("Host: " + String(bridge_ip) + ":" + String(port));
client.println("User-Agent: ESP8266/1.0");
client.println("Connection: close");
client.println("Content-type: text/xml; charset=\"utf-8\"");
client.print("Content-Length: ");
client.println(color.length()); // PUT COMMAND HERE
client.println();
client.println(color); // PUT COMMAND HERE
delay(10);
// Read all the lines of the reply from server and print them to Serial
/* while (client.available()) {
String line = client.readStringUntil('\r');
Serial.print(line);
}
Serial.println();
Serial.println("Closing connection"); */
}
void loop()
{
sendRequest(readCO2);
unsigned long valCO2 = getValue(response);
if (valCO2 <=1000 && valCo2Status != 1) {
hueControl(hue_green);
valCo2Status = 1;
} else if (valCO2 >1000 && valCO2<=1500 && valCo2Status != 2) {
hueControl(hue_yellow);
valCo2Status = 2;
} else if (valCO2 >1500 && valCo2Status != 3) {
hueControl(hue_red );
valCo2Status = 3;
}
// Use WiFiClient class to create TCP connections
WiFiClient client;
const int httpPort = 5000;
if (!client.connect(host, httpPort)) {
return;
}
// We now create a URI for the request
String url = "/update?status=";
url += valCO2;
url += "&location=HardwareDev";
// This will send the request to the server
client.print(String("GET ") + url + " HTTP/1.1\r\n" +
"Host: " + host + "\r\n" +
"Connection: close\r\n\r\n");
delay(10);
/*int num = 0;
String var = "?co2=" + String(valCO2);
// String var = "{\"rf\":" + String(humidity) + ",\"C\":" + String (celsius) + "}";
num = var.length();
// Sending the http post to the host
client.println("POST /172.16.10.66/co2/ HTTP/1.1");
client.println("Host: 172.16.10.66");
client.println("Content-Type: text/plain");
client.println("Content-Length: " + String(num));
client.println();
client.print(var);
client.println();
delay(10);*/
/* Read all the lines of the reply from server and print them to Serial
while (client.available()) {
String line = client.readStringUntil('\r');
Serial.print(line);
}
Serial.println();
Serial.println("closing connection");*/
// Delay between URL-requests
// Do not keep the host too busy ;)
delay(1000);
}
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