manage two characteristics indications simultaneously

[makouda]

I have one characteristic which send data with indications, for each frame sent I wait for acknowledgement on case BLE_GATTS_EVT_HVC: before sending the next data

but now I have two characteristics performing the same task, how can I differentiate between them? I mean how can I know that the event received on BLE_GATTS_EVT_HVC is related to characteristic one or two

[Håkon Alseth]

Hi,

In the structure of your characteristics, you shall have a .value_handle somewhere. Let's take the ble_app_uart as an example. The value handles are populated by the service itself, and stored in the global struct:

m_nus.rx_handles.value_handle
m_nus.tx_handles.value_handle

When you then get the event BLE_GATTS_EVT_HVC, you can check the handle in the BLE evt:

if (p_ble_evt->evt.gatts_evt.params.hvc.handle == m_myservice1.my_handle.value_handle) {service1_do_something();}

Cheers, Håkon