#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>
#include <DHTesp.h>
#include <ThingSpeak.h>
#include <WiFi.h>

const char* ssid = "Wokwi-GUEST"; // SSID wifi pada wokwi
const char* password = ""; // password
WiFiClient client;

unsigned long myChannelNumber = 2;
const char * myWriteAPIKey = "WKOBYF4WCZM3A3AZ";
unsigned long lastTime = 0;
unsigned long timerDelay = 10000;

const int DHT_PIN = 15;
DHTesp dhtSensor;
#define SCREEN_WIDTH 128
#define SCREEN_HEIGHT 64
#define OLED_RESET 4
#define SCREEN_ADDRESS 0x3C
Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire,
OLED_RESET);



void setup() {
WiFi.mode(WIFI_STA);
ThingSpeak.begin(client); // Inisialisasi ThingSpeak
Serial.begin(115200);
// Connect atau reconnect ke WiFi
if(WiFi.status() != WL_CONNECTED){
Serial.print("Menghubungkan ke jaringan");
while(WiFi.status() != WL_CONNECTED){
WiFi.begin(ssid, password);
delay(5000);
}
Serial.println("\nTerhubung ke jaringan.");
}
dhtSensor.setup(DHT_PIN, DHTesp::DHT22);
// Cek OLED display
if (!display.begin(SSD1306_SWITCHCAPVCC, SCREEN_ADDRESS)) {
Serial.println(F("SSD1306 allocation failed"));
for (;;);
}
display.display();
delay(2000);
display.clearDisplay();
display.setTextColor(WHITE);
display.setTextSize(2);
}

void loop() {
 TempAndHumidity data = dhtSensor.getTempAndHumidity();
 float temp = data.temperature;
 float hum = data.humidity;
 Serial.println("Temp: " + String(data.temperature, 2) + "°C");
 Serial.println("Humidity: " + String(data.humidity, 1) + "%");
 Serial.println("---");
 delay(3000); // Menunggu pembacaan sensor
 // Kosongkan Display
 display.clearDisplay();
 // Mengatur ukuran teks
 display.setTextSize(1.7);
 // Mengatur warna teks
 display.setTextColor(SSD1306_WHITE);
 // Mengatur posisi pixel76
 display.setCursor(0, 0);
 // Menampilkan teks
 display.println("Suhu: " +String(data.temperature, 2) + " C");
 display.setCursor(0, 15);
 display.println("Kelembaban: " +String(data.humidity, 1) + "%");
 ThingSpeak.setField(1, temp);
 ThingSpeak.setField(2, hum);
 display.display();
 int x = ThingSpeak.writeFields(myChannelNumber, myWriteAPIKey);
 if(x == 200){
 Serial.println("Channel update sukses.");
 }
 else{
 Serial.println("Updating channel gagal. HTTP error code " +
 String(x));
 }
 }