No device token provided on Firebase.sendTopic

[arushgupta2007]

Hi,

I am trying to use cloud messaging in esp8266 to give notification to android phone
My android phone has subscribed to the topic "general"

As a test I am sending the message in the void setup method

My esp8266 code :

`

Firebase.begin(FIREBASE_HOST, FIREBASE_AUTH);

Firebase.reconnectWiFi(true);

firebaseData.fcm.begin("SECRET_KEY_IS_COPIED");

firebaseData.fcm.setPriority("high");

firebaseData.fcm.setTimeToLive(60);

firebaseData.fcm.setNotifyMessage("Notification", "Hello World!", "firebase-logo.png",
"http://www.google.com");
firebaseData.fcm.setTopic("general");

if (Firebase.sendTopic(firebaseData))
{
//Success, print the result returned from server
Serial.println(firebaseData.fcm.getSendResult());
}
else
{
//Failed, print the error reason
Serial.println(firebaseData.errorReason());
}

`

And Error log:

`
No device token provided

`

Why do I need to give device token for topics?

[mobizt]

This is a bug and I jus fix this issue and update to v 2.1.2.
Thank for your report.

[arushgupta2007]

Thanks

[arushgupta2007]

Is it updated? Can I re-download the library?

[mobizt]

Yes, you need to delete the old one and download new zip file from this GitHub. Arduino library manager was not the latest version.

[arushgupta2007]

Ok

[arushgupta2007]

It worked!
Thanks man, your library has saved my life 👍 :)

[afung2468]

Hi Mobizt. I am using Firebase ESP8266 Client Version 2.8.5. but I am still getting this "No device token provided" message. Which version should I use to get rid of this error? Thanks.

[mobizt]

@afung2468
The issue was fixed since v 2.1.2.

See the fcm example

[afung2468]

Thanks for the reply. I used the wrong function to send the topic. Your example does not show how to send a topic. After some experiments, it works now. Thank you.

[mobizt]

@afung2468

You need to read the doc rather than ask for everything

https://github.com/mobizt/Firebase-ESP8266/tree/master/src#firebase-cloud-messaging-object-functions

https://github.com/mobizt/Firebase-ESP8266#firebase-cloud-messaging-fcm