1. posterid:900298
  2. Zephyr Low Level BLE Radio question

Re: Zephyr Low Level BLE Radio question

Chettimada, Vinayak Kariappa
 

Hi,

 

If you are building a Bluetooth Low Energy application using Zephyr, then you should use the public APIs, not call internal subsystem functions unless you know what you are doing.

 

I think you are looking for the below mentioned options when calling bt_le_ext_adv_create (https://docs.zephyrproject.org/latest/reference/bluetooth/gap.html#c.bt_le_ext_adv_create)

https://docs.zephyrproject.org/latest/reference/bluetooth/gap.html#c.@...

https://docs.zephyrproject.org/latest/reference/bluetooth/gap.html#c.@...

https://docs.zephyrproject.org/latest/reference/bluetooth/gap.html#c.@...

 

These are for the primary advertising channels, auxiliary PDU channels selection is controller implementation specific.

 

If you are not using Bluetooth Low Energy stack, then you should refer to nRF52840 product specification for implementing your proprietary radio protocol.

 

>The low-level bluetooth controller is tragic. I’m sure it’s incredibly useful, but the use of nicknames and acronyms at every corner are not useful. Perhaps if there were comments that could help too

 

Contributions to improve the code, comments and add new features are always welcome.

 

Regards,

Vinayak

 

 

From: users@... <users@...> On Behalf Of steven ghekiere via lists.zephyrproject.org
Sent: 15 December 2020 19:48
To: Marciano Preciado <marciano@...>
Cc: users@...
Subject: Re: [Zephyr-users] Zephyr Low Level BLE Radio question

 

Hey Marciano,

 

Thanks for the quick reply!

I’d have to agree on the acronyms and such.

 

What do you mean that ‘somebody can help us’?

 

Thanks

 

Steven

 

 

 

From: Marciano Preciado
Sent: dinsdag 15 december 2020 19:15
To: stevenghekiere@...
Cc: users@...
Subject: Re: [Zephyr-users] Zephyr Low Level BLE Radio question

 

Hey Steven!

 

I’d have to agree! The low-level bluetooth controller is tragic. I’m sure it’s incredibly useful, but the use of nicknames and acronyms at every corner are not useful. Perhaps if there were comments that could help too, but there aren’t. 😭

 

I hope somebody can help us out.

 

Best,

Marciano Preciado
Embedded Systems Engineer
PassiveLogic Inc.
Mobile 801-800-1184

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On Dec 15, 2020, at 7:11 AM, steven ghekiere via lists.zephyrproject.org <stevenghekiere=hotmail.com@...> wrote:

 

 

Hey there,

 

I’m a student working on a project using a Nordic nRF52840 device.

 

The past month or so I’ve been trying countless times to implement some BLE low level methods, first using Nordic SDK and now Zephyr.

More specific, I’d like to be able to set and receive the frequency to transmit data using the bigger 255 byte non-connectable broadcast beacons.

 

I asked about this on the Nordic SDK QA, which pointed me to use the newer low level BLE Zephyr API. (https://github.com/zephyrproject-rtos/zephyr/tree/master/subsys/bluetooth/controller/ll_sw/nordic)

I got some advice in the #Bluetooth channel in the Zephyr Project Slack, who pointed me to use the “lll_chan_set()” method.

However documentation is lacking, to say the least. 

I’ve been struggling and doing this the trial-and-error way but I simply cannot make sure I send something correctly if I can’t receive anything.

 

Therefore, I would really really appreciate it for some clear guidelines, documentation, code snippets, or maybe even a chat on Slack with someone who knows how this works.

Since I’m working with deadlines I’m getting quite stressed and agitated so I REALLY would appreciate some help 😊.

 

Looking forward to your answer,

Steven Ghekiere

 

 

p.s: You can find me on the Zephyr Project Slack (email steven.ghekiere@..., name Steven Ghekiere). Feel free to respond there if this seems easier.

 

 

 
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