Program
#include <ESP8266WiFi.h>
#include <WiFiClientSecure.h>
//----------------------------------------
//----------------------------------------Include the DHT Library
#include "DHT.h"
//----------------------------------------
#define DHTTYPE DHT11 //--> Defines the type of DHT sensor used (DHT11, DHT21, and DHT22), in this project the sensor used is DHT11.
const int DHTPin = 5; //--> The pin used for the DHT11 sensor is Pin D1 = GPIO5
DHT dht(DHTPin, DHTTYPE); //--> Initialize DHT sensor, DHT dht(Pin_used, Type_of_DHT_Sensor);
#define ON_Board_LED 2 //--> Defining an On Board LED, used for indicators when the process of connecting to a wifi router
//----------------------------------------SSID and Password of your WiFi router.
const char* ssid = "rkk"; //--> Your wifi name or SSID.
const char* password = "rkk@1234"; //--> Your wifi password.
//----------------------------------------
//----------------------------------------Host & httpsPort
const char* host = "script.google.com";
const int httpsPort = 443;
//----------------------------------------
WiFiClientSecure client; //--> Create a WiFiClientSecure object.
String GAS_ID = "AKfycbwHyCamO34TCYGdx8SNIU7x4qf3wAODbrxcXCp75PnHA4kivHoFxvcbGgr1rxFZyPiX"; //--> spreadsheet script ID
//============================================================================== void setup
void setup() {
// put your setup code here, to run once:
Serial.begin(115200);
delay(500);
dht.begin(); //--> Start reading DHT11 sensors
delay(500);
WiFi.begin(ssid, password); //--> Connect to your WiFi router
Serial.println("");
pinMode(ON_Board_LED,OUTPUT); //--> On Board LED port Direction output
digitalWrite(ON_Board_LED, HIGH); //--> Turn off Led On Board
//----------------------------------------Wait for connection
Serial.print("Connecting");
while (WiFi.status() != WL_CONNECTED) {
Serial.print(".");
//----------------------------------------Make the On Board Flashing LED on the process of connecting to the wifi router.
digitalWrite(ON_Board_LED, LOW);
delay(250);
digitalWrite(ON_Board_LED, HIGH);
delay(250);
//----------------------------------------
}
//----------------------------------------
digitalWrite(ON_Board_LED, HIGH); //--> Turn off the On Board LED when it is connected to the wifi router.
//----------------------------------------If successfully connected to the wifi router, the IP Address that will be visited is displayed in the serial monitor
Serial.println("");
Serial.print("Successfully connected to : ");
Serial.println(ssid);
Serial.print("IP address: ");
Serial.println(WiFi.localIP());
Serial.println();
//----------------------------------------
client.setInsecure();
}
//==============================================================================
//============================================================================== void loop
void loop() {
// Reading temperature or humidity takes about 250 milliseconds!
// Sensor readings may also be up to 2 seconds 'old' (its a very slow sensor)
int h = dht.readHumidity();
// Read temperature as Celsius (the default)
float t = dht.readTemperature();
// Check if any reads failed and exit early (to try again).
if (isnan(h) || isnan(t)) {
Serial.println("Failed to read from DHT sensor !");
delay(500);
return;
}
String Temp = "Temperature : " + String(t) + " °C";
String Humi = "Humidity : " + String(h) + " %";
Serial.println(Temp);
Serial.println(Humi);
sendData(t, h); //--> Calls the sendData Subroutine
}
//==============================================================================
//============================================================================== void sendData
// Subroutine for sending data to Google Sheets
void sendData(float tem, int hum) {
Serial.println("==========");
Serial.print("connecting to ");
Serial.println(host);
//----------------------------------------Connect to Google host
if (!client.connect(host, httpsPort)) {
Serial.println("connection failed");
return;
}
//----------------------------------------
//----------------------------------------Processing data and sending data
String string_temperature = String(tem);
// String string_temperature = String(tem, DEC);
String string_humidity = String(hum, DEC);
String url = "/macros/s/" + GAS_ID + "/exec?temperature=" + string_temperature + "&humidity=" + string_humidity;
Serial.print("requesting URL: ");
Serial.println(url);
client.print(String("GET ") + url + " HTTP/1.1\r\n" +
"Host: " + host + "\r\n" +
"User-Agent: BuildFailureDetectorESP8266\r\n" +
"Connection: close\r\n\r\n");
Serial.println("request sent");
//----------------------------------------
//----------------------------------------Checking whether the data was sent successfully or not
while (client.connected()) {
String line = client.readStringUntil('\n');
if (line == "\r") {
Serial.println("headers received");
break;
}
}
String line = client.readStringUntil('\n');
if (line.startsWith("{\"state\":\"success\"")) {
Serial.println("esp8266/Arduino CI successfull!");
} else {
Serial.println("esp8266/Arduino CI has failed");
}
Serial.print("reply was : ");
Serial.println(line);
Serial.println("closing connection");
Serial.println("==========");
Serial.println();
//----------------------------------------
}
//==============================================================================
Script
function doGet(e) {
Logger.log( JSON.stringify(e) );
var result = 'Ok';
if (e.parameter == 'undefined') {
result = 'No Parameters';
}
else {
var sheet_id = '1fN1cT0CYQhljYGHLL7UmM4uHhBW6stWhn2WxKR8BUp8'; // Spreadsheet ID
var sheet = SpreadsheetApp.openById(sheet_id).getActiveSheet();
var newRow = sheet.getLastRow() + 1;
var rowData = [];
var Curr_Date = new Date();
rowData[0] = Curr_Date; // Date in column A
var Curr_Time = Utilities.formatDate(Curr_Date, "Asia/Jakarta", 'HH:mm:ss');
rowData[1] = Curr_Time; // Time in column B
for (var param in e.parameter) {
Logger.log('In for loop, param=' + param);
var value = stripQuotes(e.parameter[param]);
Logger.log(param + ':' + e.parameter[param]);
switch (param) {
case 'temperature':
rowData[2] = value; // Temperature in column C
result = 'Temperature Written on column C';
break;
case 'humidity':
rowData[3] = value; // Humidity in column D
result += ' ,Humidity Written on column D';
break;
default:
result = "unsupported parameter";
}
}
Logger.log(JSON.stringify(rowData));
var newRange = sheet.getRange(newRow, 1, 1, rowData.length);
newRange.setValues([rowData]);
}
return ContentService.createTextOutput(result);
}
function stripQuotes( value ) {
return value.replace(/^["']|['"]$/g, "");
}
OUTPUT AT MONITOR
Temperature : 25.30 °C
Humidity : 48 %
==========
connecting to script.google.com
requesting URL: /macros/s/1fN1cT0CYQhljYGHLL7UmM4uHhBW6stWhn2WxKR8BUp8/exec?temperature=25.30&humidity=48
request sent
headers received
esp8266/Arduino CI has failed
reply was : bee
closing connection
