BluetoothSerial.h bluetooth name to include one time variable (serial#)?

[mainewoodsandpond]

Hello all,

I am working with bluetoothserial.h for the first time and have not had much luck finding good documentation, do you know where I can find it?

I have it working fine in my script but I would like to add a serial number after the bluetooth device name, I have tried as many of the logical naming conventions as I could think of but none have worked. My serial is generated in setup, based on the mac address of my ESP32 and saved as a variable "id" prior to the bluetooth naming.

I am looking for something like:

    for(int i=0; i<17; i=i+8) {
    id |= ((ESP.getEfuseMac() >> (40 - i)) & 0xff) << i;
    }

    //bluetooth
    Serial.begin(115200);
    SerialBT.begin("BluetoothName " id); //Bluetooth device name
    Serial.println("The device started, now you can pair it with bluetooth!");

Is this not possible? or what am I doing wrong?

Thanks

[cattledog]

The source code for the library is here
https://github.com/espressif/arduino-esp32/tree/master/libraries/BluetoothSerial

SerialBT.begin("BluetoothName " id); //Bluetooth device name

To use the id as the local name for the .begin, you will have to convert the id number to a character array.

SerialBluteooth.begin("local name")

[mainewoodsandpond]

Awesome, thanks cattledog. That solved the serial number name broadcast issue but it will only display the serial number or name, not both.

These work:

SerialBT.begin("BluetoothName " );
or
SerialBT.begin(ID);

These do not work:

SerialBT.begin("BluetoothName " ID);
SerialBT.begin("BluetoothName ",ID );
SerialBT.begin("BluetoothName ", ID );

Any ideas?

[mainewoodsandpond]

I also just tried a shorter version with a total of 7 characters including a shortened name and first four of the serial, to no avail.

[cattledog]

You will want something like this to combine the integer ID and the name into one for use in .begin().

 int ID = 1234; 
 String name = "BluetoothName: ";
 String nameID;
 nameID = name + String(ID); 
 SerialBT.begin(nameID);

[mainewoodsandpond]

Awesome, that make perfect sense when you point it out cattledog. It works great. Thank you for your help.