BLE enable notification on nRF52833

RE: BLE enable notification on nRF52833

Katie Newell — Tue, 09 Feb 2021 13:32:50 GMT

This works

Many thanks

RE: BLE enable notification on nRF52833

Hung Bui — Tue, 09 Feb 2021 13:25:54 GMT

Please try again with this link: https://infocenter.nordicsemi.com/topic/com.nordic.infocenter.s132.api.v7.2.0/group___b_l_e___g_a_t_t_s___h_v_n___m_s_c.html?cp=4_7_3_1_2_4_3_5

RE: BLE enable notification on nRF52833

Katie Newell — Tue, 09 Feb 2021 11:04:55 GMT

Hi Hung,

Many thanks for your reply.

Your explanation is clear, thank you. Could you please re-post the link you attached above? I am getting server error when I open it.

Many thanks

Kind regards

RE: BLE enable notification on nRF52833

Hung Bui — Tue, 09 Feb 2021 10:52:28 GMT

Hi Katie,

It's designed by spec that the CCCD (Client Characteristic Configuration Descriptor) has to be enabled before the server can send the notification to the client. You can have a look here.

It's possible to skip that only if you have paired to the peer device. When you re-connect you can reuse the previous value of CCCD to send notification right away without waiting for the client to enable CCCD. This feature is already supported in most of our BLE example (that use peer manager library)