#include <WiFi.h>
#include <ThingSpeak.h>



char ssid[] = "Wokwi-GUEST";
char pass[] = "";
WiFiClient client;
unsigned long myChannelNumber = 2605792;
const char * myWriteAPIKey = "3FV64OJ4E6DXY2FY";
int statusCode;
int trig = 27;
int echo = 14;
int distance;
int duriation;


void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);


WiFi.mode(WIFI_STA);
ThingSpeak.begin(client);
  pinMode(27, OUTPUT);
  pinMode(14, INPUT);
 
}

void loop() {

connectToCloud();
writeData();





  digitalWrite(trig, LOW);
  delayMicroseconds(2);
  digitalWrite(trig, HIGH);
  delayMicroseconds(10);
  digitalWrite(trig, LOW);
  duriation = pulseIn(echo,HIGH);
  distance = (duriation * 0.034)/2 + 1;
  Serial.println(duriation);
  delay(2000);

} 

void connectToCloud(){
if(WiFi.status() != WL_CONNECTED) {
Serial.print("Attempting to connect");
while(WiFi.status() != WL_CONNECTED) {
WiFi.begin(ssid, pass);
 Serial.print("."); 
 delay(1000);
 }
}
Serial.println("\nConnected.");
}



void writeData(){
ThingSpeak.setField(1, distance);
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); // data to be uploaded every 15secs
}