Multiple value in one characteristic

[Nats]

Hello,

My project requires me to send acceleration data to phone. So, i have started with Custom BLE app.

Since i need to send 3 values, of x, y and z-axis. So i need to send multiple values to same characteristic. Can you guide me regarding this?

If any other approach serves me better, kindly do suggest me.

[Karl Ylvisaker]

Taking a quick look on the code you have shared, it seems to me that the ble_cus_custom_value_update is not part of the main.c project file, which leads me to believe that you have either added it to one of the drivers already included in the SDK, or in a driver you have made yourself - but placed in a location probably close to the other drivers.

If this is the case, I would like to recommend to you that you do not make changes directly to the drivers included in the SDK(to avoid non-compatibility / breakage of the other examples or drivers).
Instead, I would suggest that you make your own copy of the driver you would like to modify, and rename it to reflect that. Ideally, you would also place your modified / custom code in a separate directory, for easy differentiation. Borrowing naming conventions from the SDK might also lead to confusion.
It will make it easier to share your project in the future, and it will avoid confusion when working with someone already familiar with the unmodified SDK code.

This is of course just a suggestion, and you may of course organize the project as you would like.

Have a great weekend!

Best regards,
Karl

[awneil]

Karl Ylvisaker said:

This is of course just a suggestion

But a very good suggestion!

And it is not specific to the Nordic SDK - this would be Good Practice with any SDK, or any other 3rd-party library, etc.

[Nats]

Hey, Thank you so much, but i followed the tutorial of https://github.com/NordicPlayground/nRF52-Bluetooth-Course. Custom BLE tutorial. Is this not from Nordic? 

[Karl Ylvisaker]

Hello again,

Nats said:

i followed the tutorial of https://github.com/NordicPlayground/nRF52-Bluetooth-Course. Custom BLE tutorial. Is this not from Nordic? 

Yes it is from Nordic - but be advised that all NordicPlayground repos are officially unsupported.
However, in this case that does not matter, since it is code for a tutorial.

If you see the structure of the repository from the tutorial, you will notice that the associated ble_cus.* files are both located next to the main.c file - they are not located with the other official BLE services.

Separating your custom code from the official code is good practice when working with any SDK, as @Awneil mentions. I would even argue it is the best practice, especially if you intend to work with others that are already familiar with the drivers you are modifying.

Best regards,
Karl

[Nats]

i have actually kept it along with main file, not mixed with other folders. its in the project folder that i have shared with you.