Nordic HRM App keeps reporting data when HR sensor is removed ??!!

[david cy]

Hi experts, I'd like to know if it's normal when the HR sensor is removed from ear, but the HRM app keeps reporting the same heart rate data w/ the last value , is it possible to stop it at final and not repeating it ?

thank you

[run_ar]

Please be more specific about what you are doing. Which app is this, central, peripheral, nRF51, iOS or Android? thanks.

[david cy]

What I'm using is Nordic toolbox HRM application and the problem occurs at either iOS or Android. The BLE in my product is nRF51822. thank you.

[run_ar]

What peripheral application is this? For a normal heart rate strap you would usually stop sending notifications when the HR sensor detects that there is no skin contact. However I'm not sure what sensor you have.

[david cy]

My peripheral is a BT earphone with heart rate sensor, but let's make it simple. If I stop sending HR data to Nordic APP (HRM from nRF Toolbox) but still be connected, will APP keep repeating the heart rate with last HR value? Is it normal ? I've tried both iOS or Android based smart phone , but both will keep repeating the last value even in my code , I forced to stop sending the HR data.
Thank you

[run_ar]

So I just tested this with nRF toolbox on iOS and the HRM example from SDK 10.0. The Heart rate is only updated when a notification is sent from the peripheral.