Receiving on a set BLE frequency

RE: Receiving on a set BLE frequency

StevenG — Thu, 10 Dec 2020 21:20:32 GMT

You can close this topic :)

Any other questions will be asked correct channel at Zephyr Project

RE: Receiving on a set BLE frequency

StevenG — Wed, 09 Dec 2020 19:36:23 GMT

Great, got a personal project working with some IO and logging functionalities.

I do like the way this type of project is set up :)

I'm still not sure how to use the provided functions. I've looked around in the bluetooth > controller > ll_sw directory, but I'm not sure what to use. There are very similar files (for example ll.h, lll.h, the radio.h in nordic > hal > nrf5)

Thanks,

Steven

RE: Receiving on a set BLE frequency

Kenneth — Wed, 09 Dec 2020 13:01:23 GMT

All Nordic source code related to BLE controller is pre-compiled, so that is why I pointed you to Zephyr, which have this open source.

Kenneth

RE: Receiving on a set BLE frequency

StevenG — Wed, 09 Dec 2020 12:16:15 GMT

Thanks for all the information, I'll look into that.

By the way, why didn't you recommend the Nordic SDK, but the nRF Connect one? Even though I was looking at the wrong docs, doesn't the Nordic SDK have the same functionalities?

Sorry for the amount of questions, just want to be sure I know what I'm doing (and why as well).

Steven

RE: Receiving on a set BLE frequency

Kenneth — Wed, 09 Dec 2020 08:51:21 GMT

We don't have any more description than what you may find in the source and for the radio peripheral in the nRF52840 product specifications:
https://infocenter.nordicsemi.com/topic/ps_nrf52840/radio.html

The above should cover how to configure and use the radio. I assume you would need to refer to the Bluetooth core specification on what the configuration should be.

Kenneth

RE: Receiving on a set BLE frequency

StevenG — Tue, 08 Dec 2020 16:57:25 GMT

Hey Kenneth,

Thanks for the reply. I guess I was confused by the fact you could set the radio mode to a _BLE_ version?

I've done the Get Started tutorial, got the blinky working (yay) and now I was looking again at sending and receiving on a set frequency.

In the API you provided I could find

void radio_freq_chan_set(uint32_t chan)

void radio_rx_enable(void)

void radio_tx_enable(void)

Which sounds promising!

But I'm unable to find any other information in the Docs about this. When I go into API Reference > Bluetooth > Controller, there is no mention of anything regarding the Github source.

Am I missing something? The source is quite new so it might just be that this is being worked on...

Thanks,

Steven

RE: Receiving on a set BLE frequency

Kenneth — Tue, 08 Dec 2020 08:35:51 GMT

The source you are looking at is not BLE in any way. I suggest to look at zephyr Bluetooth LE controller:
https://developer.nordicsemi.com/nRF_Connect_SDK/doc/latest/zephyr/guides/bluetooth/bluetooth-arch.html#source-tree-layout

The source should be available from:
https://github.com/zephyrproject-rtos/zephyr/tree/master/subsys/bluetooth/controller

In specific:
https://github.com/zephyrproject-rtos/zephyr/tree/master/subsys/bluetooth/controller/ll_sw/nordic

RE: Receiving on a set BLE frequency

StevenG — Mon, 07 Dec 2020 20:05:19 GMT

I think you misunderstood my question.

I don't want to make something from scratch, I'd like to use the SDK to transmit/receive on frequencies that I calculate beforehand. Ive found examples on transmitting but not receiving.

And yes, I know this probably isn't super easy, I need to do this for my master thesis. I have to extend the MAC layer with my own.

RE: Receiving on a set BLE frequency

Kenneth — Mon, 07 Dec 2020 14:51:42 GMT

Hi,

If you are interested in making a BLE enabled product you should use one of our precompiled softdevices:
https://infocenter.nordicsemi.com/topic/struct_nrf52/struct/nrf52_softdevices.html

E.g. nRF52840 + S140 softdevice, you should be able to find several examples in the nRF5 SDK (look for pca10056 (=nRF52840-DK) in \ble_peripheral folder).

The undertaking of trying to make a BLE enabled peripheral (or even Beacon) from scratch is simply to great.

Best regards,
Kenneth