Two way communication in BLE Heart Rate Sample App

[djqtsg]

Hi,

I am using nRF5_SDK_11.0.0 to learn how to use BLE stack to communicate. For the BLE HRS app, I want to achieve sth. like this: Central node can configure the sending rate of peripheral node; not only that, it can also inform peripheral to start or stop HR sending.

Can anyone enlighten me on this? It will be great with sample code, since I am new in this area.

[Petter Myhre]

You can use peripheral\ble_app_hrs and central\ble_app_hrs_c as a starting point.

[djqtsg]

yes, I've been studying those two samples. For the peripheral, I know where it sends out HR info and I could change its updating rate. But for the central, it is not clear to me where it "talks" to the peripheral. Actually I can see the heart rate sample is quite comprehensive, not only having heart rate but also two other measurements. To me the missing part is how the central talks back. Is it handle by the underlying BLE stack? Forgive my naiveness, I am new in this field.