Refer to nordic ble central mutilink to modify zephyr ble connect, disconnection will cause problems （on nrf52840）

RE: Refer to nordic ble central mutilink to modify zephyr ble connect, disconnection will cause problems （on nrf52840）

Einar Thorsrud — Tue, 15 Dec 2020 12:47:35 GMT

Hi Poyi,

The only examples of multilink central in NCS is the dongle for nRF Desktop.

Einar

RE: Refer to nordic ble central mutilink to modify zephyr ble connect, disconnection will cause problems （on nrf52840）

hmw — Mon, 14 Dec 2020 11:18:06 GMT

Thank you for your offer
But I currently want to do multilink on central
And it’s like only peripherals code
Is there an example of central multilink?

Thanks,

Poyi

RE: Refer to nordic ble central mutilink to modify zephyr ble connect, disconnection will cause problems （on nrf52840）

Edvin — Mon, 07 Dec 2020 14:36:55 GMT

I use NCS (nRF Connect SDK) v1.4.0. Try that one. You can find it here:

https://github.com/nrfconnect/sdk-nrf

The sample is found in the path:

NCS\nrf\samples\bluetooth\peripheral_hids_mouse

Best regards,

Edvin

RE: Refer to nordic ble central mutilink to modify zephyr ble connect, disconnection will cause problems （on nrf52840）

hmw — Fri, 04 Dec 2020 21:18:58 GMT

Hello,
CONFIG_BT_MAX_CONN, I have already set it.
In addition, I did not mix nRF5 SDK and nRF Connect SDK (zephyr) together
I referred to the process of nrf5 sdk BLE multilink to make changes, sorry I didn’t make it clear
What is your version of zeohyr? I’m 2.4.99 and I didn’t see the folder peripheral_hids_mouse you mentioned, and I want to use a one central to multiple peripherals
Thank,

PoYi,Lin

RE: Refer to nordic ble central mutilink to modify zephyr ble connect, disconnection will cause problems （on nrf52840）

Edvin — Fri, 04 Dec 2020 13:27:18 GMT

Hello,

If you want to support multiple connections in a zephyr project, you should set the CONFIG_BT_MAX_CONN in prj.conf to whatever number you want to support. Look at how this is set to 1 in the NCS\nrf\samples\bluetooth\peripheral_uart\prj.conf.

Other than that, you shouldn't mix source code from the nRF5 SDK and nRF Connect SDK (zephyr). They are not compatible.

The application in the peripheral_uart example is intended for only one connection, but you can look at the peripheral_hids_mouse example, which supports two connections, how you can handle multiple connections from your main.c file.

the peripheral_uart example has one pointer to the connection:

static struct bt_conn *current_conn;

while the peripheral_hids_mouse example has an array:

static struct conn_mode {
	struct bt_conn *conn;
	bool in_boot_mode;
} conn_mode[CONFIG_BT_HIDS_MAX_CLIENT_COUNT];

Best regards,

Edvin