Connection Refused

[sophieJ07]

Hi, I'm working on a project with an Arduino MKR 1000 (connected to six sensors) but firebaseData.errorReason() always returns "Connection refused." Any suggestions? Thanks :>

#include <WiFi101.h>
#include "Firebase_Arduino_WiFi101.h"

//firebase info
#define HOST "sensornetwork-fsl-default-rtdb.firebaseio.com"
#define AUTH "" //database secret
#define SSID ""
#define PASSWORD ""


FirebaseData db;

//pins info
const int NUM_SENSORS = 6; 
const int trigPins[NUM_SENSORS] = {1, 3, 5, 7, 9, 13};
const int echoPins[NUM_SENSORS] = {2, 4, 6, 8, 10, 14};

void setup() {
  Serial.begin(1000);

  //wifi setup 
  Serial.print("Connecting to Wi-Fi");
  int status = WL_IDLE_STATUS;
  while (status != WL_CONNECTED){
    status = WiFi.begin(SSID, PASSWORD);
    Serial.print(".");
    delay(100);
  }

  Serial.println();
  Serial.print("Connected with IP: ");
  Serial.println(WiFi.localIP());
  Serial.println();
  delay(100);

  //set up firebase
  Firebase.begin(HOST, AUTH, SSID, PASSWORD);
  Firebase.reconnectWiFi(true); 

  //set up all inputs and outputs
  for(int i = 0; i < NUM_SENSORS; i++){
    pinMode(trigPins[i], OUTPUT); 
    pinMode(echoPins[i], INPUT); 
  }

}

void loop() {
  long duration, inches, cm;
  
  for(int i = 0; i < NUM_SENSORS; i++){
    digitalWrite(trigPins[i], LOW);
    delayMicroseconds(2);
    digitalWrite(trigPins[i], HIGH);
    delayMicroseconds(10);
    digitalWrite(trigPins[i], LOW);

    duration = pulseIn(echoPins[i], HIGH);

    inches = microsecondsToInches(duration);
    cm = microsecondsToCentimeters(duration);

    Serial.print("Sensor ");
    Serial.print(i+1);
    Serial.print(" : ");
    Serial.print(inches);
    Serial.print("in, ");
    Serial.print(cm);
    Serial.print("cm");
    Serial.println();
    
    //update database and print status
    bool spotOccupied = (cm < 5);
    String path = "/spots/" + String(i+1); 
    Serial.println(path);
    
    if (Firebase.setBool(db, path, spotOccupied)) {
      Serial.println("Firebase update successful");
    } else {
      Serial.println("Firebase update failed");
      Serial.println(db.errorReason());
    }
    
  }
  
  delay(100);
}

long microsecondsToInches(long microseconds) {
  return microseconds / 148;
}

long microsecondsToCentimeters(long microseconds) {
  return microseconds / 58;
}

[mobizt]

Update Firmware first
https://learn.adafruit.com/adafruit-feather-m0-wifi-atwinc1500/updating-firmware

Then update certificate
https://learn.adafruit.com/adafruit-feather-m0-wifi-atwinc1500/updating-ssl-certificates

Don't forget to add your firebase domain when update certificate.

This is the issue of device which uses WiFiNINA you can follow.
mobizt/Firebase-Arduino-WiFiNINA#18