Nrf52840 Dongle become the bluetooth device

[Geass77]

Sorry , I  would like to ask can the  Nrf52840 Dongle  becomes a bluetooth device like the picture but not a serial COM port?

[awneil]

Geass77 said:

like the picture but not a serial COM port?

What do you mean by that?

What, exactly, do you want this "device" to do?

Note that the nRF52840 is BLE only - not Bluetooth "Classic"

The nRF52840 Dongle is not a great platform for doing development - you should get an nRF52840-DK for that ...

[Geass77]

I mean that I want to send the sensor data from  nRF52840-DK to dongle ，and the dongle can send the data to PC, but when use the nrf connect it send data by serial port , I want to send data like the bluetooth headphone , but when use the nrf connect it send data by serial port , I want to send data like the bluetooth headphone ，is it possible?  

[awneil]

That still makes no sense!

The dongle has a USB connection to the PC - so, if you don't want it to appear as a COM port (ie, a USB CDC device) then you can choose some other USB class.

https://infocenter.nordicsemi.com/topic/com.nordic.infocenter.sdk5.v15.3.0/examples_usb.html

Geass77 said:

I want to send data like the bluetooth headphone

In what way, "like" ?

A Bluetooth headphone will be BT Classic - again, the nRF52840 does not support that.

As the name suggests, BLE is designed for low energy:  it is specifically not designed for high speed or high volume data - such as audio.

Having said that, you can get some limited audio capability over BLE - is that what you want?

If so, try searching the forum - it has come up before!

[awneil]

awneil said:

If so, try searching the forum - it has come up before

eg, devzone.nordicsemi.com/.../nrf51-and-nrf52-audio