How to get nRF52 to act as a central and a peripheral with FreeRTOS?

RE: How to get nRF52 to act as a central and a peripheral with FreeRTOS?

Susheel Nuguru — Mon, 25 Nov 2019 12:25:39 GMT

I haven't tried this myself, but thinking out loud.

It does not look like this is a difficult functionality to achieve. The initialization of both roles(peripheral and central) can be done in main function without any threads stated.

You can have two threads, one purely handling peripheral BLE events and the other purely handling central events.
The events that are received n the BLE event handler and can be forwarded to corresponding threads using message queues

Apart from that, there should not be any architectural challenges you should see related to FreeRTOS.

RE: How to get nRF52 to act as a central and a peripheral with FreeRTOS?

danielco68 — Fri, 22 Nov 2019 20:42:43 GMT

Hi Simon,

I already saw this post and it wasn't as detailed as I was hoping for.

Currently, I have two code bases where one acts as a peripheral and one acts as a central. I would like to create tasks to have the board act as both, and I would like to use a counting semaphore do to some inter-task communication, which directly controls components on the board such as an LED.

In short, the final goal is to have some scanner that listens to a signal (a BLE advertisment from an external source), as well as be advertising itself and allowing a characteristic in a custom service to be written to.

I am looking for FreeRTOS compatible code that could achieve the above specifications.

Thank you,

Daniel

RE: How to get nRF52 to act as a central and a peripheral with FreeRTOS?

Simon — Fri, 22 Nov 2019 16:19:13 GMT

All I could find, was this example:

https://devzone.nordicsemi.com/f/nordic-q-a/41508/sdk15-2-freertos-ble-central-and-peripheral

If this is not sufficient, or if you would like to get a more detailed answer, please tell me and I will ask for a comment from the freeRTOS expert on the support team.

Best regards,

Simon