Token error: code: -4, message: connection lost

[Nikitanagar]

I am using the GSM with esp32 and this error shows:

Token info: type = id token (GITKit token), status = error Token error: code: -4, message: connection lost Token info: type = id token (GITKit token), status = on request Token info: type = id token (GITKit token), status = error Token error: code: -4, message: connection lost Token info: type = id token (GITKit token), status = on request

but with wifi, it is working fine.

[mobizt]

You should follow these examples and adapt it with your GSM module.

[Nikitanagar]

Yeah I use this example. Here's the code..

/**

• Created by K. Suwatchai (Mobizt)
• Email: k_suwatchai@hotmail.com
• Github: https://github.com/mobizt/Firebase-ESP-Client
• Copyright (c) 2023 mobizt

• */

/* This example shows the basic RTDB usage with TTGO T-A7670 (ESP32 with SIMCom SIMA7670) and TinyGSMClient. /

// To allow TinyGSM library integration, the following macro should be defined in src/ESP_Mail_FS.h or // your custom config file src/Custom_ESP_Mail_FS.h. // #define TINY_GSM_MODEM_SIM7600

define TINY_GSM_MODEM_SIM7600 // SIM7600 AT instruction is compatible with A7670

define SerialAT Serial1

define SerialMon Serial

define TINY_GSM_USE_GPRS true

include

include

//#include

include

include

include

include

include // SIMA7670 Compatible with SIM7600 AT instructions

// Set serial for debug console (to the Serial Monitor, default speed 115200)

define SerialMon Serial

// Set serial for AT commands (to the module) // Use Hardware Serial on Mega, Leonardo, Micro

define SerialAT Serial1

// See all AT commands, if wanted

ifdef DUMP_AT_COMMANDS

include

StreamDebugger debugger(SerialAT, SerialMon); TinyGsm modem(debugger);

else

TinyGsm modem(SerialAT);

endif

TinyGsmClient client(modem);

// Define the serial console for debug prints, if needed

define TINY_GSM_DEBUG SerialMon

define TINY_GSM_USE_GPRS true

define TINY_GSM_USE_WIFI false

// set GSM PIN, if any

define GSM_PIN ""

// Your GPRS credentials, if any const char apn[] = ""; const char gprsUser[] = ""; const char gprsPass[] = "";

define uS_TO_S_FACTOR 1000000ULL // Conversion factor for micro seconds to seconds

define TIME_TO_SLEEP 600 // Time ESP32 will go to sleep (in seconds)

define UART_BAUD 115200

define PIN_DTR 25

define PIN_TX 26

define PIN_RX 27

define PWR_PIN 4

define BAT_ADC 35

define BAT_EN 12

define PIN_RI 33

define PIN_DTR 25

define RESET 5

define SD_MISO 2

define SD_MOSI 15

define SD_SCLK 14

define SD_CS 13

include

include

TinyGsmClient gsm_client(modem);

// Provide the token generation process info.

include <addons/TokenHelper.h>

// Provide the RTDB payload printing info and other helper functions.

include <addons/RTDBHelper.h>

// For the following credentials, see examples/Authentications/SignInAsUser/EmailPassword/EmailPassword.ino

/ 1. Define the API Key /

define API_KEY "......."

/ 2. Define the RTDB URL /

define DATABASE_URL "......." //.firebaseio.com or ..firebasedatabase.app

/ 3. Define the user Email and password that alreadey registerd or added in your project /

define USER_EMAIL "........"

define USER_PASSWORD "........"

// Define Firebase Data object FirebaseData fbdo;

FirebaseAuth auth; FirebaseConfig config;

unsigned long sendDataPrevMillis = 0;

unsigned long count = 0;

void setup() {

Serial.begin(115200);

delay(10);
pinMode(BAT_EN, OUTPUT);
digitalWrite(BAT_EN, HIGH);

// A7670 Reset
pinMode(RESET, OUTPUT);
digitalWrite(RESET, LOW);
delay(100);
digitalWrite(RESET, HIGH);
delay(3000);
digitalWrite(RESET, LOW);

pinMode(PWR_PIN, OUTPUT);
digitalWrite(PWR_PIN, LOW);
delay(100);
digitalWrite(PWR_PIN, HIGH);
delay(1000);
digitalWrite(PWR_PIN, LOW);

DBG("Wait...");

delay(3000);

SerialAT.begin(UART_BAUD, SERIAL_8N1, PIN_RX, PIN_TX);

// Restart takes quite some time
// To skip it, call init() instead of restart()
DBG("Initializing modem...");
if (!modem.init())
{
    DBG("Failed to restart modem, delaying 10s and retrying");
    return;
}

/*
2 Automatic
13 GSM Only
14 WCDMA Only
38 LTE Only
*/
modem.setNetworkMode(38);
if (modem.waitResponse(10000L) != 1)
{
    DBG("setNetworkMode faill");
}

String name = modem.getModemName();
DBG("Modem Name:", name);

String modemInfo = modem.getModemInfo();
DBG("Modem Info:", modemInfo);

Serial_Printf("Firebase Client v%s\n\n", FIREBASE_CLIENT_VERSION);

/* Assign the api key (required) */
config.api_key = API_KEY;

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

/* Assign the RTDB URL (required) */
config.database_url = DATABASE_URL;

/* Assign the callback function for the long running token generation task */
config.token_status_callback = tokenStatusCallback; // see addons/TokenHelper.h

fbdo.setGSMClient(&gsm_client, &modem, GSM_PIN, apn, gprsUser, gprsPass);

// Comment or pass false value when WiFi reconnection will control by your code or third party library e.g. WiFiManager
Firebase.reconnectNetwork(true);

// Since v4.4.x, BearSSL engine was used, the SSL buffer need to be set.
// Large data transmission may require larger RX buffer, otherwise connection issue or data read time out can be occurred.
fbdo.setBSSLBufferSize(4096 /* Rx buffer size in bytes from 512 - 16384 */, 1024 /* Tx buffer size in bytes from 512 - 16384 */);

Firebase.setDoubleDigits(5);

Firebase.begin(&config, &auth);

}

void loop() {

// Firebase.ready() should be called repeatedly to handle authentication tasks.

if (Firebase.ready() && (millis() - sendDataPrevMillis > 15000 || sendDataPrevMillis == 0))
{
    sendDataPrevMillis = millis();

    Serial_Printf("Set bool... %s\n", Firebase.RTDB.setBool(&fbdo, F("/test/bool"), count % 2 == 0) ? "ok" : fbdo.errorReason().c_str());

    count++;
}

}

[mobizt]

You should make your GSM module works with TinyGSMClient before using the library.

This is not a library issue.

[Nikitanagar]

Yeah I had done this and GSM is working properly but same error comes.

[mobizt]

Your GSM module is actually SIM7600 compatible AT commands.

You should read every single line of comment in example carefully to set it up.

[mobizt]

These two lines comments are typo.

// To allow TinyGSM library integration, the following macro should be defined in src/ESP_Mail_FS.h or
// your custom config file src/Custom_ESP_Mail_FS.h.

You should define the SIM7600 macro in this file instead. #define TINY_GSM_MODEM_SIM7600

[mobizt]

These pins should be changed to match your module. BAT_EN, RESET, PIN_TX, PIN_RX and PWR_PIN

[Nikitanagar]

In this file where i can change. Ok got it

[Nikitanagar]

Should i have define #define TINY_GSM_MODEM_SIM7600 only , or any other line also.

[mobizt]

Read it again (skip the typo lines)

// To allow TinyGSM library integration, the following macro should be defined in src/ESP_Mail_FS.h or
// your custom config file src/Custom_ESP_Mail_FS.h.
// #define TINY_GSM_MODEM_SIM7600

[mobizt]

These two lines comments are typo.

// To allow TinyGSM library integration, the following macro should be defined in src/ESP_Mail_FS.h or
// your custom config file src/Custom_ESP_Mail_FS.h.

You should define the SIM7600 macro in this file instead. #define TINY_GSM_MODEM_SIM7600

[Nikitanagar]

include "./core/Firebase_Client_Version.h"

if !FIREBASE_CLIENT_VERSION_CHECK(40408)

error "Mixed versions compilation."

endif

ifndef FirebaseFS_H

define FirebaseFS_H

define TINY_GSM_MODEM_SIM7600 // Defined here is it right

include

include "./mbfs/MB_MCU.h"

[mobizt]

It's ok, actually you can define it any place in that file.

[Nikitanagar]

Thanks a ton mobizt. It's working fine.

[avinashboy]

Hi, i'm also getting the same error

17:02:48.807 -> Token info: type = id token (GITKit token), status = on request
17:02:53.795 -> Token info: type = id token (GITKit token), status = error
17:02:53.795 -> Token error: code: -4, message: connection lost

here is my code:

#define TINY_GSM_MODEM_SIM7600
#define SerialAT Serial1
#include <TinyGsmClient.h>
#include <Arduino.h>
#include <Firebase_ESP_Client.h>

#include "addons/TokenHelper.h"
#include "addons/RTDBHelper.h"

// Insert Firebase project API Key
#define API_KEY ""

// Insert Authorized Username and Corresponding Password
#define USER_EMAIL ""
#define USER_PASSWORD ""

const int MODEM_RX = 27;
const int MODEM_TX = 26;
const int powerPin = 4;
const int LED_BUILTINS = 2;

// Configure TinyGSM
TinyGsm modem(SerialAT);
TinyGsmClient client(modem);

// Insert RTDB URLefine the RTDB URL
#define DATABASE_URL ""

// Define Firebase objects
FirebaseData stream;
FirebaseData fbdo;
FirebaseAuth auth;
FirebaseConfig config;

const char* myConstant = "";
const char apn[] = "";
const char gprsUser[] = "";
const char gprsPass[] = "";

#define GSM_PIN ""

// Variables to save database paths
String listenerPath = "type/" + String(myConstant) + "/method";

void streamCallback(FirebaseStream data) {
  Serial.printf("stream path, %s\nevent path, %s\ndata type, %s\nevent type, %s\n\n",
                data.streamPath().c_str(),
                data.dataPath().c_str(),
                data.dataType().c_str(),
                data.eventType().c_str());
  //printResult(data);  //see addons/RTDBHelper.h
  Serial.println();

  Serial.printf("Received stream payload size: %d (Max. %d)\n\n", data.payloadLength(), data.maxPayloadLength());
}

void streamTimeoutCallback(bool timeout) {
  if (timeout)
    Serial.println("stream timeout, resuming...\n");
  if (!stream.httpConnected())
    Serial.printf("error code: %d, reason: %s\n\n", stream.httpCode(), stream.errorReason().c_str());
}

void simConInit(){
  pinMode(powerPin, OUTPUT);
  pinMode(LED_BUILTINS, OUTPUT);
  digitalWrite(powerPin, LOW);

  SerialAT.begin(115200, SERIAL_8N1, MODEM_RX, MODEM_TX);

  // Restart takes quite some time
  // To skip it, call init() instead of restart()
  Serial.println("Initializing modem...");
  if (!modem.init()) {
    Serial.println("Failed to restart modem, delaying 10s and retrying");
    return;
  }

  // Restart takes quite some time
  // To skip it, call init() instead of restart()
  Serial.println("Initializing modem...");
  if (!modem.restart()) {
    Serial.println("Failed to restart modem, delaying 10s and retrying");
    return;
  }

  Serial.println("Waiting for network...");
  if (!modem.waitForNetwork()) {
    Serial.println(" fail");
    delay(10000);
    return;
  }
  Serial.println(" success");

  if (modem.isNetworkConnected()) {
    Serial.println("Network connected");
  }

  // GPRS connection parameters are usually set after network registration
  Serial.print(F("Connecting to "));
  Serial.print(apn);
  if (!modem.gprsConnect(apn,gprsUser,gprsPass)) {
    Serial.println(" fail");
    delay(10000);
    return;
  }
  Serial.println(" success");

  if (modem.isGprsConnected()) {
    Serial.println("LTE module connected");
  }

  modem.setNetworkMode(38);

  digitalWrite(LED_BUILTINS, HIGH);

  // Assign the api key (required)
  config.api_key = API_KEY;

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

  // Assign the RTDB URL (required)
  config.database_url = DATABASE_URL;

  // Assign the callback function for the long running token generation task */
  config.token_status_callback = tokenStatusCallback;  //see addons/TokenHelper.h

  stream.setGSMClient(&client, &modem, GSM_PIN, apn, gprsUser, gprsPass);

  Firebase.reconnectWiFi(true);

  stream.setBSSLBufferSize(2048 /* Rx buffer size in bytes from 512 - 16384 */, 1024 /* Tx buffer size in bytes from 512 - 16384 */);

  // Assign the maximum retry of token generation
  config.max_token_generation_retry = 5;

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

  if (!Firebase.RTDB.beginStream(&stream, listenerPath.c_str()))
    Serial.printf("stream begin error, %s\n\n", stream.errorReason().c_str());

  // Assign a calback function to run when it detects changes on the database
  Firebase.RTDB.setStreamCallback(&stream, streamCallback, streamTimeoutCallback);

  delay(2000);
}

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

  // SIMCON INIT
  simConInit();

}

void loop() {
  // put your main code here, to run repeatedly:
  if (Firebase.isTokenExpired()) {
    Firebase.refreshToken(&config);
    Serial.println("Refresh token");
  }

  if (!modem.isGprsConnected()) {
    Serial.println("GPRS connection lost. Reconnecting...");
    if (!modem.gprsConnect(apn)) {
      Serial.println("Failed to reconnect to cellular network.");
      // Consider delaying or restarting the ESP
      delay(10000);
      return;
    }
    Serial.println("Reconnected to cellular network.");
  }

}

I'm a newbie. Please, can anyone tell me what went wrong with this code?

[mobizt]

@avinashboy

https://github.com/mobizt/Firebase-ESP32/blob/9c63f30b1a72093f16395a6b83ad13ecde0b5ecb/examples/ExternalClient/GSM/Basic/Basic.ino#L15-L17

[avinashboy]

I have created src/FirebaseFS.h or src/CustomFirebaseFS.h, but I don't understand its purpose. Can someone explain it to me?

[mobizt]

@avinashboy https://github.com/mobizt/Firebase-ESP32?tab=readme-ov-file#predefined-options

[avinashboy]

Yeah, I got it. But I'm sorry for asking such a basic question: where can I find the file src/FirebaseFS.h?

in Arduino IDE

[mobizt]

@avinashboy

You are misunderstanding the basic library working concept.

The file FirebaseFS.h is the libraries configuration file which comes with the library, you don't have to create it. https://github.com/mobizt/Firebase-ESP32/blob/master/src/FirebaseFS.h

You should add this #define TINY_GSM_MODEM_SIM7600 in that file.

[avinashboy]

Yeah, I understood that. Where can I find the file on my computer? I'm not familiar with that part in the Arduino IDE.

[mobizt]

@avinashboy

Why don't you know where the library installed?

You should ask such basic question in community forum or google.