Send ESP32 data to Firebase

[BrandonKoit]

I am trying to send the data from ESP32 to the Firebase. It keeps showing the error: 'no matching function for call to 'FB_RTDB::setJSON(FirebaseData&, const char*, FirebaseJson&)''

Code:
// Prepare data to send to Firebase
String path = "/devices/" + device_location + "/data/" + String(millis());
String data = "{";
data += ""date":"" + String(now.day()) + "/" + String(now.month()) + "/" + String(now.year()) + "",";
data += ""time":"" + String(now.hour()) + ":" + String(now.minute()) + ":" + String(now.second()) + "",";
data += ""led_state":"" + String(ledState == HIGH ? "ON" : "OFF") + """;
data += "}";

  // Send data to Firebase Realtime Database
  if (Firebase.RTDB.setJSON(fbdo, path.c_str(), data)) {
    Serial.println("Data sent to Firebase successfully!");
  } else {
    Serial.println("Error sending data to Firebase");
    Serial.println(fbdo.errorReason());
  }

Error:
no matching function for call to 'FB_RTDB::setJSON(FirebaseData&, const char*, FirebaseJson&)'

[mobizt]

You should update your Firebase library.

[mobizt]

You have to remove or uninstall all Firebase libraries and versions in your Arduino's libraries folder and install only the latest version from Library Manager.

[BrandonKoit]

Please guide through me on this. I have stuck with this for 2 days. Thanks

[BrandonKoit]

I didn't download any other version of this library before. I am new to Arduino and only thinking to upload data to Firebase recently. So, i just downloaded 1 version of this library.

[BrandonKoit]

Or, should i usea different library instead ?

[mobizt]

I already told you.

You have to remove all Firebase libraries first and also clear the Arduino Temp folder because the error shows that the compiler select the old version of library for compilation instead.

If you don't know where Arduino Temp folder is, uninstall and reinstall the Arduino IDE.

Then re-install the latest version Firebase library.

[mobizt]

This library was deprecated.
https://github.com/mobizt/Firebase-ESP-Client?tab=readme-ov-file#we-have-moved-to-the-new-library

If you preferer to continue to use this library, you can use it, but no help and issue support.

I reply to you because it is a simple compilation error issue.

[BrandonKoit]

Ok, i got what you meant now. I am going to uninstall all the Firebase library and install the latest one. But i would like to confirm with, is this the latest version library?

[mobizt]

I said about this (Firebase ESP Client) library that you are currently using. I told you to update to the latest version instead of installing another Firebase library.

It depends on you, if you want to use your current code, you should stay with this old library (latest version).

If you moved to the new library as stated on Readme, you have to learn the library concepts and how to use it because of it is new and different. Your current code cannot work with new library.

[BrandonKoit]

That's what make me confused. Because I am already using the latest version of the library ('Firebase ESP Client). The version I downloaded is 4.4.14, which already the latest.

[BrandonKoit]

Thanks mate, i will try this out and update you again.

[BrandonKoit]

Hi, i've tried this out. The error still same

[mobizt]

Nothing is the same.

You should post the complete error.

[mobizt]

You cannot set the JSON like that.

You must use FirebaseJson to work with JSON in this library.

Please check this example (even all examples are removed from the repo) for correctly usage.

You should follow the examples for correct usage.

[BrandonKoit]

Arduino: 1.8.13 (Windows 10), Board: "ESP32 Dev Module, Disabled, Disabled, Default 4MB with spiffs (1.2MB APP/1.5MB SPIFFS), 240MHz (WiFi/BT), QIO, 80MHz, 4MB (32Mb), 921600, Core 1, Core 1, None, Disabled, Zigbee ZCZR (coordinator/router)"

WARNING: library LiquidCrystal_I2C claims to run on avr architecture(s) and may be incompatible with your current board which runs on esp32 architecture(s).

C:\Users\A0513537\Documents\Arduino\ESP32_FirebaseV2\ESP32_FirebaseV2.ino: In function 'void loop()':

ESP32_FirebaseV2:151:32: error: no matching function for call to 'FB_RTDB::setJSON(FirebaseData*, const char*, String*)'

151 | if (Firebase.RTDB.setJSON(&fbdo, path.c_str(), data)) {

  |           ~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~

In file included from C:\Users\A0513537\Documents\Arduino\libraries\Firebase_Arduino_Client_Library_for_ESP8266_and_ESP32\src/Firebase.h:60,

             from C:\Users\A0513537\Documents\Arduino\ESP32_FirebaseV2\ESP32_FirebaseV2.ino:5:

C:\Users\A0513537\Documents\Arduino\libraries\Firebase_Arduino_Client_Library_for_ESP8266_and_ESP32\src/rtdb/FB_RTDB.h:1163:8: note: candidate: 'template bool FB_RTDB::setJSON(FirebaseData*, T, FirebaseJson*)'

1163 | bool setJSON(FirebaseData *fbdo, T path, FirebaseJson *json)

  |        ^~~~~~~

C:\Users\A0513537\Documents\Arduino\libraries\Firebase_Arduino_Client_Library_for_ESP8266_and_ESP32\src/rtdb/FB_RTDB.h:1163:8: note: template argument deduction/substitution failed:

C:\Users\A0513537\Documents\Arduino\ESP32_FirebaseV2\ESP32_FirebaseV2.ino:151:54: note: cannot convert '& data' (type 'String*') to type 'FirebaseJson*'

151 | if (Firebase.RTDB.setJSON(&fbdo, path.c_str(), &data)) {

  |                                                      ^~~~~

C:\Users\A0513537\Documents\Arduino\libraries\Firebase_Arduino_Client_Library_for_ESP8266_and_ESP32\src/rtdb/FB_RTDB.h:1181:8: note: candidate: 'template bool FB_RTDB::setJSON(FirebaseData*, T, FirebaseJson*, float&)'

1181 | bool setJSON(FirebaseData *fbdo, T path, FirebaseJson *json, float &priority)

  |        ^~~~~~~

C:\Users\A0513537\Documents\Arduino\libraries\Firebase_Arduino_Client_Library_for_ESP8266_and_ESP32\src/rtdb/FB_RTDB.h:1181:8: note: template argument deduction/substitution failed:

C:\Users\A0513537\Documents\Arduino\ESP32_FirebaseV2\ESP32_FirebaseV2.ino:151:32: note: candidate expects 4 arguments, 3 provided

151 | if (Firebase.RTDB.setJSON(&fbdo, path.c_str(), &data)) {

  |           ~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~

C:\Users\A0513537\Documents\Arduino\libraries\Firebase_Arduino_Client_Library_for_ESP8266_and_ESP32\src/rtdb/FB_RTDB.h:1216:8: note: candidate: 'template<class T1, class T2> bool FB_RTDB::setJSON(FirebaseData*, T1, FirebaseJson*, T2)'

1216 | bool setJSON(FirebaseData *fbdo, T1 path, FirebaseJson *json, T2 ETag)

  |        ^~~~~~~

C:\Users\A0513537\Documents\Arduino\libraries\Firebase_Arduino_Client_Library_for_ESP8266_and_ESP32\src/rtdb/FB_RTDB.h:1216:8: note: template argument deduction/substitution failed:

C:\Users\A0513537\Documents\Arduino\ESP32_FirebaseV2\ESP32_FirebaseV2.ino:151:32: note: candidate expects 4 arguments, 3 provided

151 | if (Firebase.RTDB.setJSON(&fbdo, path.c_str(), &data)) {

  |           ~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~

C:\Users\A0513537\Documents\Arduino\libraries\Firebase_Arduino_Client_Library_for_ESP8266_and_ESP32\src/rtdb/FB_RTDB.h:1234:8: note: candidate: 'template<class T1, class T2> bool FB_RTDB::setJSON(FirebaseData*, T1, FirebaseJson*, float&, T2)'

1234 | bool setJSON(FirebaseData *fbdo, T1 path, FirebaseJson *json, float &priority, T2 ETag)

  |        ^~~~~~~

C:\Users\A0513537\Documents\Arduino\libraries\Firebase_Arduino_Client_Library_for_ESP8266_and_ESP32\src/rtdb/FB_RTDB.h:1234:8: note: template argument deduction/substitution failed:

C:\Users\A0513537\Documents\Arduino\ESP32_FirebaseV2\ESP32_FirebaseV2.ino:151:32: note: candidate expects 5 arguments, 3 provided

151 | if (Firebase.RTDB.setJSON(&fbdo, path.c_str(), data)) {

  |           ~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~

Multiple libraries were found for "WiFi.h"

Used: C:\Users\A0513537\AppData\Local\Arduino15\packages\esp32\hardware\esp32\3.0.7\libraries\WiFi

Not used: C:\Program Files (x86)\Arduino\libraries\WiFi

Multiple libraries were found for "SD.h"

Used: C:\Users\A0513537\AppData\Local\Arduino15\packages\esp32\hardware\esp32\3.0.7\libraries\SD

Not used: C:\Program Files (x86)\Arduino\libraries\SD

exit status 1

no matching function for call to 'FB_RTDB::setJSON(FirebaseData*, const char*, String*)'

This report would have more information with
"Show verbose output during compilation"
option enabled in File -> Preferences.

[mobizt]

Read my above reply and follow.

[BrandonKoit]

// Prepare FirebaseJson object
FirebaseJson json;
json.set("time", String(now.hour()) + ":" + String(now.minute()) + ":" + String(now.second()));
json.set("date", String(now.day()) + "/" + String(now.month()) + "/" + String(now.year()));
json.set("ledState", ledState);

  // Send data to Firebase Realtime Database
  if (Firebase.RTDB.setJSON(&fbdo, path.c_str(), json)) {
    Serial.println("Data sent to Firebase successfully!");
  } else {
    Serial.println("Error sending data to Firebase");
    Serial.println(fbdo.errorReason());
  }

Is this way correct?

[mobizt]

You can test it.

Because this library is deprecated and end of life and no further help and supports, documentation and examples can be found here from this tree.
https://github.com/mobizt/Firebase-ESP-Client/tree/v4.4.14

If you prefer to use this deprecated library, you should learn and try it yourself.