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LWeatherStation.ino
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LWeatherStation.ino
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/***************************************************
LOCAL WEATEHR STATION:::
This is an example for the BMP180 Barometric Pressure & Temp Sensor and DHT11 temp and Humidity sensor
BMP180 useS I2C to communicate, 2 pins are required to
interface
// Connect VCC of the BMP085 sensor to 3.3V (NOT 5.0V!)
// Connect GND to Ground
// connect i2c bus with SDA=D2 and SCL=D1 of NodeMCU
// Connect SCL to i2c clock - on '168/'328 Arduino Uno/Duemilanove/etc thats Analog 5
// Connect SDA to i2c data - on '168/'328 Arduino Uno/Duemilanove/etc thats Analog 4
// EOC is not used, it signifies an end of conversion
// XCLR is a reset pin, also not used here
DHT11 uses normal gpio pins to interface with NodeMCU
// Connect VCC or + of the DHT11 sensor to 3.3V (NOT 5.0V!)
// Connect GND or - of the DHT11 to Ground
// connect out of DHT11 to any gpio of nodeMCU (here to d4 of nodemcu)
returns
****************************************************/
// INCLUDES libraries for DHT11
#include "DHT.h"
#define DHTPIN 2
#define DHTTYPE DHT11
DHT dht(DHTPIN, DHTTYPE);
// INCLUDES libraries for BMP180
#include <Wire.h>
#include <Adafruit_BMP085.h>
Adafruit_BMP085 bmp;
#include <SoftwareSerial.h>
SoftwareSerial mySerial(12, 13); // RX, TX
#include <ESP8266WiFi.h> //https://github.com/esp8266/Arduino
#include <DNSServer.h>
#include <ESP8266WebServer.h>
#include "WiFiManager.h" //https://github.com/tzapu/WiFiManager
#include <WiFiClientSecure.h>
int count=0,i,m,j,k;
//////////////////////////////////////// ALL DECLARATIONS for CLOUD //////////////////////////////
const char* host = "api.thingsai.io"; // OR host = devapi2.thethingscloud.com
const char* post_url = "/devices/deviceData"; // OR /api/v2/thingscloud2/_table/data_ac
const char* time_server = "baas.thethingscloud.com"; //this is to convert timestamp
const int httpPort = 80;
const int httpsPort = 443;
const char* server = "api.thingsai.io"; // Server URL
char timestamp[10];
WiFiClient client;
/////////////////////////////////////////////////////////////////////////////////////////////////////////
void configModeCallback (WiFiManager *myWiFiManager)
{
Serial.println("Entered config mode"); //*-*-*-*-*-*-*-*-*-*-*-*-*-*if control enters this function then net is not connected
Serial.println(WiFi.softAPIP()); // "WiFi.softAPIP() is for AP" , "WiFi.localIP() is for STA",
Serial.println(myWiFiManager->getConfigPortalSSID()); //if you used auto generated SSID, print it
}
/////////////////////////////////////// TIMESTAMP CALCULATION function///////////////////////////////////////
int GiveMeTimestamp()
{
unsigned long timeout = millis();
while (client.available() == 0)
{
if (millis() - timeout > 50000)
{
client.stop();
return 0;
}
}
while (client.available())
{
String line = client.readStringUntil('\r'); //indexOf() is a funtion to search for smthng , it returns -1 if not found
int pos = line.indexOf("\"timestamp\""); //search for "\"timestamp\"" from beginning of response got and copy all data after that , it'll be your timestamp
if (pos >= 0)
{
int j = 0;
for(j=0;j<10;j++)
{
timestamp[j] = line[pos + 12 + j];
}
}
}
}
////////////////////////////////////////////////////////////////////////////////////////////////////////
void setup()
{
delay(1000);
dht.begin();
bmp.begin();
Serial.begin(115200); //(19200,SERIAL_8E1) - data size = 8 bits , parity = Even , stop bit = 1bit
mySerial.begin(115200);
WiFiManager wifiManager;
wifiManager.setAPCallback(configModeCallback);
if(!wifiManager.autoConnect("iPankaj","80518051")) //wifiManager.autoConnect("AP-NAME", "AP-PASSWORD"); (OR) wifiManager.autoConnect("AP-NAME"); only ID no password (OR) wifiManager.autoConnect(); this will generate a ID by itself
{
Serial.println("failed to connect and hit timeout"); //control comes here after long time of creating Access point "NodeMCU" by NodeMCU and still it has not connected
//reset and try again, or maybe put it to deep sleep
ESP.reset();
delay(1000);
}
//if you come here you have connected to the WiFi
Serial.println("connected...yeey :");
}
void loop()
{
// int analogValue = analogRead(outputpin);
{
/////////////////////////////////////// SEND THE QUERY AND RECEIVE THE RESPONSE///////////////////////
// LOGIC FOR DHT11
delay(2000);
float h = dht.readHumidity();
float t = dht.readTemperature();
float f = dht.readTemperature(true);
if (isnan(h) || isnan(t) || isnan(f)) // isnan ==> "is not a number"...returns 1 if " h or t or f are not a number"
{
Serial.println("Failed to read from DHT sensor!");
return;
}
float hic = dht.computeHeatIndex(t, h, false);
Serial.print("Humidity: ");
Serial.print(h);
Serial.print(" %\t");
Serial.print(" %\n");
Serial.print("Temperature: ");
Serial.print(t);
Serial.print(" *C ");
Serial.print(" %\n");
Serial.print("Heat index: ");
Serial.print(hic);
Serial.print(" *C ");
Serial.print(" %\n");
delay(2000);
//LOGIC FOR BMP180
float pr= bmp.readPressure();
float alt= bmp.readAltitude();
float realAlt = bmp.readAltitude(101500);
Serial.print("Pressure = ");
Serial.print(pr);
Serial.println(" Pa");
// Calculate altitude assuming 'standard' barometric
// pressure of 1013.25 millibar = 101325 Pascal
Serial.print("Altitude = ");
Serial.print(alt);
Serial.println(" meters");
Serial.print("Pressure at sealevel (calculated) = ");
Serial.print(bmp.readSealevelPressure());
Serial.println(" Pa");
// you can get a more precise measurement of altitude
// if you know the current sea level pressure which will
// vary with weather and such. If it is 1015 millibars
// that is equal to 101500 Pascals.
Serial.print("Real altitude = ");
Serial.print(realAlt);
Serial.println(" meters");
Serial.println();
delay(3000);
Serial.print("connecting to ");
Serial.println(host); //defined upside :- host = devapi2.thethingscloud.com or 139.59.26.117
///////////////////////////////////// TIMESTAMP CODE SNIPPET /////////////////////////
Serial.println("inside get timestamp\n");
if (!client.connect(time_server, httpPort))
{
return; //*-*-*-*-*-*-*-*-*-*
}
client.println("GET /api/timestamp HTTP/1.1"); //Whats this part doing, i didnt get
client.println("Host: baas.thethingscloud.com");
client.println("Cache-Control: no-cache");
client.println("Postman-Token: ea3c18c6-09ba-d049-ccf3-369a22a284b8");
client.println();
GiveMeTimestamp(); //it'll call the function which will get the timestamp response from the server
Serial.println("timestamp receieved");
Serial.println(timestamp);
///////////////////////////////////////////////////////////////////////////////
Serial.println("inside ThingsCloudPost");
String PostValue = "{\"device_id\": 61121696123, \"slave_id\": 2";
PostValue = PostValue + ",\"dts\":" +timestamp;
PostValue = PostValue +",\"data\":{\"Humidity\":" + h +",\"Temperature\":" + t +", \"Pressure\":" + pr +",\"Real Altitude\":" + realAlt +", \"Heat index\":" + hic +" }"+"}";
Serial.println(PostValue);
/* create an instance of WiFiClientSecure */
WiFiClientSecure client;
Serial.println("Connect to server via port 443");
if (!client.connect(server, 443)){
Serial.println("Connection failed!");
} else {
Serial.println("Connected to server!");
/* create HTTP request */
client.println("POST /devices/deviceData HTTP/1.1");
client.println("Host: api.thingsai.io");
//client.println("Connection: close");
client.println("Content-Type: application/json");
client.println("cache-control: no-cache");
client.println("Authorization: Bearer eyJ0eXAiOiJKV1QiLCJhbGciOiJIUzI1NiJ9.IjVhMzBkZDFkN2QwYjNhNGQzODkwYzQ4OSI.kaY6OMj5cYlWNqC2PNTkXs9PKy6_m9tdW5AG7ajfVlY");
client.print("Content-Length: ");
client.println(PostValue.length());
client.println();
client.println(PostValue);
//////////////////////////////////POSTING the data on to the cloud is done and now get the response form cloud server//////////////////
Serial.print("Waiting for response ");
while (!client.available()){
delay(50); //
Serial.print(".");
}
/* if data is available then receive and print to Terminal */
while (client.available()) {
char c = client.read();
Serial.write(c);
}
/* if the server disconnected, stop the client */
if (!client.connected()) {
Serial.println();
Serial.println("Server disconnected");
client.stop();
}
}
Serial.println("////////////////////// THE END /////////////////////");
delay(3000);
}
}