I want to publish data to a Firestore database using Arduino with the SIM800L module using firestore cloud function.
I have already done a test in which I use Firebase Database Realtime, which works well but without configuring security.
Now, I'm using a Firestore database by configuring security. I read the official documentation but I do not know how Arduino should ask to enter the credentials.
In fact I do not know how to do it at all.
Can anyone help me ? It's urgent.
... View more