Using the nRF52840 dongle to receive and display data via the serial port (terminal)

[Maxime]

Hello,

I am developing the following application:

An nRF52840 bluetooth module connected to a sensor does data acquisition and then sends it directly to an nRF52840 dongle which transmits the data to the serial port.

I thought for this I would use the example "ble_app_uart_c" to receive the data and transmit it on the serial port.

This is very easy to do with an nRF52840 DK, but I can't do it with the dongle because it seems that the serial port is not available with the dongle.

What do I need to do in order for this to work properly using the dongle?

Thank you in advance and best regards,

Maxime

[Dmitry]

Hi Maxime,

you can use USB CDC ACM - a virtual USB COM port, there is an example in SDK. Please also read this thread.

[Jørgen Holmefjord]

There is also a USBD BLE UART Example if you want to use NUS to transfer the sensor data over BLE. This example implements NUS peripheral role, but you can implement NUS Central on the other end, it is possible to send data both ways.

[Maxime]

Hello,

I've tried the example. However I can't receive/send data via the serial port.

I can connect/disconnect to the dongle with another Bluetooth device. When I send data to the dongle, it seems that the data is received (The LD2 led flashes differently every time I send data).

But nothing is visible in my serial port... (I use the "Termite" terminal, which works very well with a nrf52840 DK and the examples ble_app_uart and ble_app_art_c)