Fault on interrupt or bare metal(no OS) environment

[albertorizzi]

I'm using this library with Arduino UNO R4 WiFi and appears the following error:

15:14:33.378 -> Firmware name: "/private/var/folders/r6/r1gyq3rn46v14fz4g96lg9dm0000gn/T/arduino/sketches/E49FB8A5019B0CF966E47ECDD69A9A96/sketch_oct3a.ino", compiled on: Oct  3 2023
15:14:33.508 -> Fault on interrupt or bare metal(no OS) environment
15:14:33.674 -> Error: Main stack(200079b8) was overflow
15:14:33.674 -> ===== Thread stack information =====
15:14:33.674 ->   addr: 20007b00    data: 6cee85c2
15:14:33.674 ->   addr: 20007b04    data: 4098954e
...
15:14:44.272 -> ====================================
15:14:44.272 -> Bus fault is caused by precise data access violation
15:14:44.404 -> The bus fault occurred address is f2915410
15:14:44.404 -> Show more call stack info by run: addr2line -e "/private/var/folders/r6/r1gyq3rn46v14fz4g96lg9dm0000gn/T/arduino/sketches/E49FB8A5019B0CF966E47ECDD69A9A96/sketch_oct3a.ino".elf -a -f 00017cd2 000228f8 000214fa 00023c4a 00023b84 00023bc6 0001de26 000210ca 000210c0

In setup I call this function:

FirebaseData firebaseConnection() {

  config.api_key = API_KEY;
  config.database_url = DATABASE_URL;

  // Assign the user sign in credentials
  auth.user.email = USER_EMAIL;
  auth.user.password = USER_PASSWORD;

  // Initialize the library with the Firebase authen and config.
  Firebase.begin(&config, &auth);

  Serial.println("Firebase ready");
}

Can you help me to understand why this behaviour?

[mobizt]

It is stack overflow error.

15:14:33.674 -> Error: Main stack(200079b8) was overflow

I will investigate and update.

[mobizt]

Please provide the minimal but complete code that reproduces the issue.

[albertorizzi]

Yes, of course @mobizt

Main.ino

#include "firebase.h"

#include "WiFiS3.h"

#include "arduino_secrets.h"

///////please enter your sensitive data in the Secret tab/arduino_secrets.h
char ssid[] = SECRET_SSID;  // your network SSID (name)
char pass[] = SECRET_PASS;  // your network password (use for WPA, or use as key for WEP)
int keyIndex = 0;           // your network key index number (needed only for WEP)

int status = WL_IDLE_STATUS;

// that you want to connect to (port 80 is default for HTTP):
WiFiSSLClient client;


void setup() {
  Serial.begin(9600);

  while (!Serial) {
    ;  // wait for serial port to connect. Needed for native USB port only
  }


  Serial.println(F("Init Serial"));

  // check for the WiFi module:
  if (WiFi.status() == WL_NO_MODULE) {
    Serial.println("Communication with WiFi module failed!");
    // don't continue
    while (true)
      ;
  }

  String fv = WiFi.firmwareVersion();
  if (fv < WIFI_FIRMWARE_LATEST_VERSION) {
    Serial.println("Please upgrade the firmware");
  }

  // attempt to connect to WiFi network:
  while (status != WL_CONNECTED) {
    Serial.print("Attempting to connect to SSID: ");
    Serial.println(ssid);
    // Connect to WPA/WPA2 network. Change this line if using open or WEP network:
    status = WiFi.begin(ssid, pass);

    // wait 10 seconds for connection:
    delay(10000);
  }

  printWifiStatus();

  firebaseConnection(); // in firebase.h
}

void loop() {
 
}

Firebase.h

#include <Firebase_ESP_Client.h>

/* 2. Define the API Key */
#define API_KEY "***"

/* 3. Define the RTDB URL */
#define DATABASE_URL "***"  //<databaseName>.firebaseio.com or <databaseName>.<region>.firebasedatabase.app
#define USER_EMAIL "***"
#define USER_PASSWORD "**"

// Define the Firebase Data object
FirebaseData fbdo;

// Define the FirebaseAuth data for authentication data
FirebaseAuth auth;

// Define the FirebaseConfig data for config data
FirebaseConfig config;


FirebaseData firebaseConnection() {

  config.api_key = API_KEY;
  config.database_url = DATABASE_URL;

  // Assign the user sign in credentials
  auth.user.email = USER_EMAIL;
  auth.user.password = USER_PASSWORD;

  // Initialize the library with the Firebase authen and config.
  Firebase.begin(&config, &auth);
}

void writeOnRealtimeDatabase() {
  if (Firebase.ready()) {
    Firebase.RTDB.setBool(&fbdo, F("/test/bool"), true);
  }
}

[GiovanniZanone]

Hi Alberto, have you found a way to use the library with the Arduino r4 WiFi board? It's listed as a supported device but I'm not able to run any program on it.Thanks in advance

[albertorizzi]

Hi Giovanni, unfortunately no.

In fact I decided to make HTTP call to post and get from Realtime Firebase.

[GiovanniZanone]

I'll try this way too, thanks!