/**
   ESP32 + DHT22 Example for Wokwi
   
   https://wokwi.com/arduino/projects/322410731508073042
*/

#include <WiFi.h>
#include <ThingSpeak.h> // always include thingspeak header file after other header files and custom macros

#define SECRET_SSID "Wokwi-GUEST"    // replace with your WiFi network name
#define SECRET_PASS "" // replace with your WiFi password

#define SECRET_CH_ID 1983703   // replace 0000000 with your channel number
#define SECRET_WRITE_APIKEY "3ZRQL3K5J7ETMAET"   // replace XYZ with your channel write API Key

char ssid[] = HUAWEI-5G-FpnU;   // your network SSID (name) 
char pass[] = culiteremari;   // your network password
int keyIndex = 0;            // your network key Index number (needed only for WEP)
WiFiClient  client;
unsigned long myChannelNumber = SECRET_CH_ID;
const char * myWriteAPIKey = SECRET_WRITE_APIKEY;
int temppin=32;
float pinval;
float temp=0.00;
float BETA = 3950;
int ledPin = 19;                // choose the pin for the LED
int inputPin = 2;               // choose the input pin (for PIR sensor)
int pirState = LOW;             // we start, assuming no motion detected
int val = 0;  

void setup() 
{
  pinMode(ledPin, OUTPUT);      // declare LED as output
  pinMode(inputPin, INPUT);     // declare sensor as input
  pinMode(temppin,INPUT);
  Serial.begin(115200);  //Initialize serial
  while (!Serial) {
    ; // wait for serial port to connect. Needed for Leonardo native USB port only
  }
    WiFi.mode(WIFI_STA);   
  ThingSpeak.begin(client);  // Initialize ThingSpeak
}

void loop() 
{
  // Connect or reconnect to WiFi
  val = digitalRead(inputPin);  // read input value
  if (val == HIGH) {            // check if the input is HIGH
    digitalWrite(ledPin, HIGH);  // turn LED ON
    if (pirState == LOW) {
      // we have just turned on
      Serial.println("Motion detected!");
      // We only want to print on the output change, not state
      pirState = HIGH;
    }
  } else {
    digitalWrite(ledPin, LOW); // turn LED OFF
    if (pirState == HIGH) {
      // we have just turned of
      Serial.println("Motion ended!");
      // We only want to print on the output change, not state
      pirState = LOW;
    }
  }
  if(WiFi.status() != WL_CONNECTED)
  {
    Serial.print("Attempting to connect to SSID: ");
    Serial.println(SECRET_SSID);
    while(WiFi.status() != WL_CONNECTED)
    {
      WiFi.begin(ssid, pass); // Connect to WPA/WPA2 network. Change this  line if using open or WEP network
      Serial.print(".");
      delay(5000);     
    } 
    Serial.println("\nConnected.");
  }
  pinval=analogRead(temppin);
  temp=1 / (log(1 / (4096 / pinval - 1)) / BETA + 1.0 / 298.15) - 273.15;
  Serial.println(temp);

  // Write to ThingSpeak. There are up to 8 fields in a channel, allowing you to store up to 8 different
  // pieces of information in a channel.  Here, we write to field 1.
  int x = ThingSpeak.writeField(myChannelNumber, 2, temp, myWriteAPIKey);
  if(x == 200)
  {
    Serial.println("Channel update successful.");
  }
  delay(250); // Wait 7 seconds to update the channel again
}