nRF8002 notifying host on change in input pin

[karthik k]

Hello I am using the nRF8002 kit. I would like to inform the host (Android app) when there is a long button press on the input pin.

Is this possible and if so which BLE profile / service should I be using for this ? I tried to use the "Immediate Alert" service but that service can only send data from the phone to the nRF device.

Thank You

[Balaji Srinivasan]

Hi Karthik,

Please use the 'Immediate alert (master)' tab of the nRFgoStudio for this purpose. Hope this helps.

Cheers, Balaji

[karthik k]

Hi Balaji

Thank you for the response.

I have configured the nRF to use the immediate alert (master) as you have suggested. But the challenge I face is this.....

The immediate alert profile has only a "write" characteristic i.e it does not have a "notify" characteristic. With a "write" characteristic, the client (Android phone) can only send data to the server (nRF device).

My question is how to send the pin change information back to the phone ? Please let me know if I missed something.

What needs to be done on the Android side to get the pin value change information

Thank You

[Balaji Srinivasan]

Hi Karthik,

You will need to implement an Immediate Alert Service (IAS) Server on the phone (Master). Once that is done, the nRF8002 will act the IAS client and will write to the 'Alert Level' characteristic present within the IAS on the phone on button presses (as configured in the nRFgo Studio). That way you get your button presses signaled to the phone.

Hope this is clear.

Cheers, Balaji

[Ole Morten]

I'd be happy if you could accept Balaji's answer by clicking the button below it if you found it useful! :-) That helps clearing up this question and keeping the site tidy.

[MARTIN FR]

hello balaji could you please tell me indetail how to send a long buton press event notification to the android phone? if the notificationreceived in android phone by using that can i able to make a phone ring?