#include <WiFi.h>
#include <ThingSpeak.h>
char ssid[] = "Wokwi-GUEST";
char pass[] = "";
WiFiClient client;
unsigned long myChannelNumber =  2074313;
const char * myWriteAPIKey = "YMIHZEOW0KU0HPEE";
int statusCode;
int ledPin = 13;                
int inputPin = 2;               
int pirState = LOW;             
int val = 0;                    
void setup() {
Serial.begin(115200);
WiFi.mode(WIFI_STA);
ThingSpeak.begin(client);
  pinMode(ledPin, OUTPUT);      
  pinMode(inputPin, INPUT);  
void loop() {
connectToCloud();
computeData();
writeData();
delay(1000);
}
void connectToCloud(){
if(WiFi.status() != WL_CONNECTED) {
Serial.print("Attempting to connect");
while(WiFi.status() != WL_CONNECTED) {
WiFi.begin(ssid, pass);
for(int i=0;i<5;i++) {
Serial.print(".");
delay(1000);
}
}
Serial.println("\nConnected.");
}
}
void computeData(){
   val = digitalRead(inputPin);  
  if (val == HIGH)
   {            
    digitalWrite(ledPin, HIGH);  
    if (pirState == LOW)
     {
      Serial.println("Motion detected!");
      pirState = HIGH;
    }
  } else {
    digitalWrite(ledPin, LOW); 
    if (pirState == HIGH)
     {
      Serial.println("Motion ended!");
      pirState = LOW;
    }
  }
}
void writeData(){
ThingSpeak.setField(1, pirState);
statusCode = ThingSpeak.writeFields(myChannelNumber,myWriteAPIKey);
if(statusCode == 200) //successful writing code
Serial.println("Channel update successful.");
else
Serial.println("Problem Writing data. HTTP error code :" +
String(statusCode));
delay(15000); 
}