Automatic update interval for BlueNRG characteristics.

[aj.sk]

Is it possible to use the BlueNRG API to have a automatic characteric broadcasting? Currently I do this manually by calling the function

aci_gatt_update_char_value()

for the corresponding characteristic but that's kinda cumbersome. Does the stack provide an automatic approach for this problem?

[aj.sk]

Is this such an irregular use case?

[Winfred LU]

Could you provide more detail about

what would be the function of "automatic characteric broadcasting"?

[aj.sk]

Hi Winfred

If a client subscribes to a certain characteristic and doesn't want to poll. I'm not that deep into the whole Bluetooth topic so I don't know if that a regular use case, I just have a project with this requirement so currently I use the function described in the question.

[Winfred LU]

That would be the behavior of attribute notifications.

So, it seems that you were implementing a GATT server.

When periodical notifications are needed, please put the procedure be triggered with a timer.

There is no single API for a GATT server to generate a notification periodically.

[aj.sk]

So my approach of periodically (timer based) calling aci_gatt_update_char_value is correct?

[Winfred LU]

Yes. Because the notification can be sent in any time when needed (characteristic value updated),

the server has to actively notify the client when it means to do that.

[aj.sk]

Okay, thanks for confirmation!