Cycling Power server(ble peripheral and ble central)

RE: Cycling Power server(ble peripheral and ble central)

Wiggins — Fri, 02 Jun 2023 09:06:10 GMT

thanks, I achieve the cycling power control point feature by imitating the nus_uart example, it's a indicate server, when receiving the reply, it needs to reply. I added the reply to make it。

RE: Cycling Power server(ble peripheral and ble central)

Edvin — Thu, 01 Jun 2023 13:48:18 GMT

I understand. Unfortunately, the nRF5 SDK is in maintenance mode, so no new examples will be provided. Only security-related updates.

And while I can't write the application for you, please let me know if you are stuck porting one of the central samples to the cscs service, and I can have a look at what you have done.

Best regards,

Edvin

RE: Cycling Power server(ble peripheral and ble central)

Wiggins — Thu, 01 Jun 2023 00:43:30 GMT

I just imitate the writing method of cccd to realize a cccd2. The several questions you raised give me some ideas, and I will achieve its source according to the tracing problems you raised。

I still hope the ble experts can provide a complete cycling power client server code, which I can probably implement based on other examples, but there will be a lot of bugs and irregularities

Thanks！

RE: Cycling Power server(ble peripheral and ble central)

Edvin — Wed, 31 May 2023 13:35:56 GMT

You need to check the return value of your cccd2_configure(). What does it return?

What handle are you inputting to the cccd2_configure()? Where did you get it from? Does it point to the correct characteristic?

Best regards,

Edvin

RE: Cycling Power server(ble peripheral and ble central)

Wiggins — Wed, 31 May 2023 11:15:40 GMT

I know what you mean by this method, and I have already implemented some functions in this way，But there is one small feature left unimplemented，

cycling power client（the central roal），subscribe the “cycling power control point” server，and send command，How do you implement it in code，

Can you understand my frustration?

RE: Cycling Power server(ble peripheral and ble central)

Edvin — Wed, 31 May 2023 09:37:29 GMT

Hello,

Did you see the cscs example in the SDK:
https://infocenter.nordicsemi.com/topic/sdk_nrf5_v17.1.0/ble_sdk_app_csc.html?cp=9_1_4_2_2_8

As for the central/client side, the closest we have is the running speed and cadence sample:

https://infocenter.nordicsemi.com/topic/sdk_nrf5_v17.1.0/ble_sdk_app_rscs_c.html?cp=9_1_4_2_0_3

I guess you can use this as a starting point, and swap out the rscs (Running Speed and Cadence Service) with the cscs (Cycling Speed and Cadence Service). It will require you to port the application, change the UUID and modify the handlers to match the cscs instead of the rscs, but I believe copying the SDK\components\ble\ble_services\ble_rscs_c files is a good starting point. Then compare the peripheral devices running rscs and cscs (flash the samples and connect to it using nRF Connect for Desktop/Android/iOS and compare the services/characteristics that are present).

Then make sure that the discovery process of the client matches the cscs instead of the rscs, and enable the correct notifications, and you will be there.

Best regards,

Edvin

RE: Cycling Power server(ble peripheral and ble central)

Wiggins — Wed, 31 May 2023 08:17:02 GMT

how to achieve cycling power control point int ble client?

RE: Cycling Power server(ble peripheral and ble central)

Wiggins — Wed, 31 May 2023 07:13:59 GMT

how to achieve the feature, “cycling power control point” server in ble central