driver to connect nrf52840 with our APP

RE: driver to connect nrf52840 with our APP

Amanda Hsieh — Tue, 28 Sep 2021 06:54:32 GMT

Hi Rahul,

From your previous reply, seems you are using NUS service to transmit data. So, I suggest you refer to nRF Toolbox app which includes NUS profile. If you transmit data via weight scale service, you would need to create these profile and services on your own app. You can verify with nRF Connect to make sure it can read or write over weight scale service before developing your weight scale app.

As my previous reply, there is no Weight Scale profiles inside our app. You can refer our existing app like nRF Blinky app or nRF Toolbox app to create your own with Weight Scale profiles.

-Amanda

RE: driver to connect nrf52840 with our APP

Rkidechaa — Mon, 27 Sep 2021 16:02:23 GMT

Hi Amanda,

Thanks for your quick response. I would like to let you know that we are not building the mobile app from scratch. We have an app and trying to integrate this weight scale with nrf52840 sensor to our app. Also, the app development team is recommending us to use the weight scale profile and weight scale service listed in the link below:

https://www.bluetooth.com/specifications/specs/

I tried to attach the files for your reference.

Do we need to create these profile and services to connect to our app? or do you have a pre-existing solution that I can recommend them to use?

Please let me know if you have any questions or concerns.

devzone.nordicsemi.com/.../WSP_5F00_V1.0.0-_2800_1_2900_.pdf devzone.nordicsemi.com/.../WSS_5F00_V1.0.0-_2800_1_2900_.pdf

Thanks

RE: driver to connect nrf52840 with our APP

Amanda Hsieh — Mon, 27 Sep 2021 07:00:44 GMT

Hi,

Have a look at the UART app which is now part of the nRF Toolbox application (Android/iOS).

-Amanda

RE: driver to connect nrf52840 with our APP

Rkidechaa — Fri, 24 Sep 2021 19:13:56 GMT

Hi Amanda,

Let me explain you in more detail regarding the project so you can suggest better solution.

Using SPI and ble_app_uart example code we successfully sending the weight scale data that i.e. 192.4 (2 byte data) over Nordic UART service and keep displaying on nrf connect app (android phone).

In ble_app_uart they used "uart_event_handle()"function to detect the input on serial monitor. so i am calling that function and keep sending weight scale data to app.

I want to implement same feature in my app. so could you suggest me how to do that ?

Thank you

Rahul

RE: driver to connect nrf52840 with our APP

Amanda Hsieh — Fri, 24 Sep 2021 09:37:21 GMT

Then, I would suggest you take a look at how nRF Blinky app (for Android/iOS) communicates with BLE Blinky Application or nRF Toolbox for Android/iOS, which has multiple profiles (unfortunately no Weight Scale).

-Amanda

RE: driver to connect nrf52840 with our APP

Rkidechaa — Tue, 21 Sep 2021 14:55:36 GMT

Hi Amanda,

[quote userid="77782" url="~/f/nordic-q-a/79046/driver-to-connect-nrf52840-with-our-app/327344#327344"]Are you going to developing a mobile app as nRF connect app? If so, you can take a look at this https://github.com/NordicSemiconductor/Android-nRF-Connect for reference. [/quote]

before asking the question i already checked the above link. I don't have any background for app development so if you help to find out the communication or decode protocol when we connect to nrf app connect via Bluetooth.

Thank you

Rahul

RE: driver to connect nrf52840 with our APP

Amanda Hsieh — Tue, 31 Aug 2021 08:06:49 GMT

Hi,

[quote user="Rkidechaa"]If you provide me what command or protocol used to communicate with nrf52840 that would be great.[/quote]

Could you elaborate in more detail on what you would like to communicate with nrf52840?

Are you going to developing a mobile app as nRF connect app? If so, you can take a look at this https://github.com/NordicSemiconductor/Android-nRF-Connect for reference.

-Amanda

RE: driver to connect nrf52840 with our APP

Rkidechaa — Mon, 30 Aug 2021 15:03:57 GMT

Hey Amanda,

Thank you for reply.

I Knew about the Library but I don't have any background regarding software.

If you provide me what command or protocol used to communicate with nrf52840 that would be great.

Thanks and Regards,

Rahul

RE: driver to connect nrf52840 with our APP

Amanda Hsieh — Mon, 30 Aug 2021 12:18:01 GMT

Hi Rahul,

Have a look at our Android BLE Library over at our GitHub.

Regards,
Amanda