How to disconnect/Disable BLE peripheral Zephyr

[vcbz]

I have a use case where a Peripheral requires to disconnect itself from the Central. Is this possible?

I have tried using the peripheral_hr example and modified as follows

https://github.com/vChavezB/peripheral_disconnect/blob/main/main.c

I am using the bt_disable and bt_conn_disconnect API but neither of these seam to work.

I get the following log

*** Booting Zephyr OS build v3.0.99-ncs1  ***
[0Bluetooth initialized
Advertising successfully started
0:00:00.004,150] <inf> sdc_hci_driver: SoftDevice Controller build revision:
                                         33 78 2a 18 20 f5 61 61  a6 8b 77 60 62 83 39 2a |3x*. .aa ..w`b.9*
                                         7c f1 14 e4                                      ||...
[00:00:00.007,568] <inf> bt_hci_core: HW Platform: Nordic Semiconductor (0x0002)
[00:00:00.007,598] <inf> bt_hci_core: HW Variant: nRF52x (0x0002)
[00:00:00.007,629] <inf> bt_hci_core: Firmware: Standard Bluetooth controller (0x00) Version 51.10872 Build 1643454488
[00:00:00.008,941] <inf> bt_hci_core: Identity: FE:4C:08:6B:72:E8 (random)
[00:00:00.008,941] <inf> bt_hci_core: HCI: version 5.3 (0x0c) revision 0x1136, manufacturer 0x0059
[00:00:00.008,972] <inf> bt_hci_core: LMP: version 5.3 (0x0c) subver 0x1136
disconnect err -128
disable err -134

[vcbz]

Ok I think I solved it.
Disconnection error reason needs to be BT_HCI_ERR_REMOTE_USER_TERM_CONN as mentioned in another post and in the zephyr API docs.
The disable error seems to be that the NRF52833 DK does not support the api bt_disable

[Vidar Berg]

Thanks for updating your ticket. Yes, you need to select one of the listed disconnect reasons (link), and  BT_HCI_ERR_REMOTE_USER_TERM_CONN is usually the one you want if you just want to terminate a connection.

vcbz said:

The disable error seems to be that the NRF52833 DK does not support the api bt_disable

Yes, you are right. The disable API is supported by the BT host, but not our controller. That is why it returns with -ENOTSUP / -134. But are you sure you need to disable the stack in your case? In most cases it is sufficient to stop or pause ongoing BLE tasks such as advertising.