#include <Wire.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>
#include <OneWire.h>
#include <DallasTemperature.h>
#include <WiFi.h>
#include "ThingSpeak.h"
// THING SPEAK ----------------------
const char* ssid = "Guest"; // your network SSID (name)
const char* password = ""; // your network password
WiFiClient client;
unsigned long myChannelNumber = 1;
const char * myWriteAPIKey = "SE7YVEF1A9S7IGID";
// Timer variables
unsigned long lastTime = 0;
unsigned long timerDelay = 30000;
// --------------------------------
const int SensorDataPin = 14;
OneWire oneWire(SensorDataPin);
DallasTemperature sensors(&oneWire);
Adafruit_SSD1306 display = Adafruit_SSD1306(128, 64, &Wire, -1);
void setup() {
Serial.begin(115200);
if(!display.begin(SSD1306_SWITCHCAPVCC, 0x3C)) {
Serial.println(F("SSD1306 allocation failed"));
for(;;);
}
delay(2000);
display.clearDisplay();
display.setTextColor(WHITE);
WiFi.mode(WIFI_STA);
ThingSpeak.begin(client); // Initialize ThingSpeak
}
void loop() {
if ((millis() - lastTime) > timerDelay) {
// Connect or reconnect to WiFi
if(WiFi.status() != WL_CONNECTED){
Serial.println("Attempting to connect");
while(WiFi.status() != WL_CONNECTED){
Serial.println("Connecting...");
WiFi.begin(ssid, password);
delay(5000);
}
Serial.println("\nConnected.");
}
delay(5000);
display.setCursor(0,0);
display.setTextSize(1);
display.clearDisplay();
//Gathering data from temperature sensor
sensors.requestTemperatures();
float temperature_Celsius = sensors.getTempCByIndex(0);
float temperature_F = sensors.getTempFByIndex(0);
Serial.print("Temperature = "); Serial.print(temperature_Celsius); Serial.println(" *C");
//display.print("Temperature: "); display.print(temperature_Celsius); display.println(" *C");
display.setTextSize(1);
display.setCursor(0,0);
display.print("Temperature: ");
display.setTextSize(2);
display.setCursor(0,10);
display.print(temperature_F);
display.print(" ");
display.setTextSize(1);
display.cp437(true);
display.write(167);
display.setTextSize(2);
display.print("F");
// Writing to ThingSpeak
ThingSpeak.setField(1, temperature_F);
ThingSpeak.setField(2, temperature_Celsius);
int x = ThingSpeak.writeFields(myChannelNumber, myWriteAPIKey);
if(x == 200){
Serial.println("Channel update successful.");
}
else{
Serial.println("Problem updating channel. HTTP error code " + String(x));
}
lastTime = millis();
}
//Displaying information to serial and led
Serial.println();
display.display();
delay(2000);
}