Connection between nRF52840 Dongle and MATLAB

[Milo311]

Hi everyone, I am newcommer in here. I just buy one nRF52840 Dongle. I want to connect it with nRF52832 DK with ble_app_uart implemented; and open a COM port in MATLAB to receive data and send commands from MATLAB to the DK. I have read about pc-ble-driver-py but I do not understand how to use it . In addition, about nRF Connect, I have try but I cannot receive any data when I config the generic attributes. Hence, my question is:

Is there any possble way to open COM port in MATLAB and transfer data between DK and dongle (with Nordic UART Service (NUS))?

Thanks in advance.

Milo

[Edvin]

I agree with awneil,

to get the nRF52840 dongle to communicate with Matlab, you must find out what API Matlab uses. 

You can check out the example usbd_ble_uart, which is located in:

SDK15.2.0\examples\peripheral\usbd_ble_uart. It doesn't have a project file for the dongle yet, but you can test it with an nRF52840DK if you have one. The reason it is hard to test on the dongle is because it doesn't have a programming chip, like the DK, so it is not possible to debug on the dongle.

Here is the documentation on how to test the usbd_ble_uart example.

Best regards,

Edvin

[Edvin]

In fact, I just tested the example on the dongle, and it works. You should just be aware that the LEDs are on different pins on the Dongle and the DK, so it will not show the correct LED states, unless you change the preprocessor define BOARD_PCA10056 to BOARD_PCA10059.

BR,

Edvin

[Milo311]

Thanks for your reply. I think I will try to use this example in order to re-program the ble_uart_c for the dongle because I want the dongle to communicate with my custom board with NUS. Is it possible to do that? if yes can you please give me some hints?

Milo

[awneil]

Milo311 said:

 Is it possible to do that? if yes can you please give me some hints?

Edvin just told you that it is possible - and gave you links to the project documentation, and the location of the example in the SDK.

Note the advice to do it on an nRF52840DK first - as development & debugging will be much easier than on a dongle!

[Milo311]

Thanks for your reply. I just feel confused about central and peripheral part programming. I will figure it by myself first and return if I have another problems.

Milo

[awneil]

They are fundamental Bluetooth concepts (not specific to Nordic) - so certainly worth getting them nailed before proceeding!

Similar to the concepts of USB Host & Device ... 

Any BLE tutorial should cover it; eg,

https://learn.adafruit.com/introduction-to-bluetooth-low-energy/gatt#connected-network-topology-3-2