*** Booting Zephyr OS build zephyr-v3.1.0-2256-gdddb5dd6b0de *** Starting Beacon Demo Bluetooth init failed (err -11) [00:00:01.262,176] bt_hci_driver: Endpoint binding failed with -11 [00:00:01.262,207] bt_hci_core: HCI driver open failed (-1

[jack_good]

Hi,

I am trying to run a sample "Beacon" that  a sample of nrf5340  about bluetooth.

but, there is one issue as follow when i run each sample about bluetooth :

Bluetooth init failed (err -11)
[00:00:01.262,176] <err> bt_hci_driver: Endpoint binding failed with -11
[00:00:01.262,207] <err> bt_hci_core: HCI driver open failed (-11)

I build the program by :   west build -b nrf5340dk_nrf5340_cpunet.

then:   west flash

I'm a novice who is leaning nrf5340.

please help me.

many thanks

[Karl Ylvisaker]

Hello,

To start out with the nRF5340 I highly recommend that you begin by looking through the Getting Started with the nRF5340 DK documentation page. If you are also new to the nRF Connect SDK I also highly recommend going through this fundementals course over at the DevZone Academy.

It looks to me like the issue here is that you are only building the cpunet (for netcore) and not the cpuapp (for the application core). This is detailed more closely in the "flashing using the command line" documentation.

Please do not hesitate to let us know if anything is still unclear, or if you encounter any other issues or questions - we're happy to help you! :) 

Best regards,
Karl

[jack_good]

I have solved the problem. But I don't understand what's going on. ,build for cpunet. this sample run in the netcore. I can see the rusult in minicom seting the serial port as ttyACM0. I saw ttyACM1 before.
if I build the sampel: beacom for cpuapp, Another program: peripheral_hci must be build in netcore.

[Karl Ylvisaker]

Hello again,

jack_good said:

I have solved the problem.

I am glad to hear that you were able to resolve the issue! :) 

jack_good said:

But I don't understand what's going on. ,build for cpunet. this sample run in the netcore. I can see the rusult in minicom seting the serial port as ttyACM0. I saw ttyACM1 before.
if I build the sampel: beacom for cpuapp, Another program: peripheral_hci must be build in netcore.

As mentioned in the nRF5340 DK getting started documentation you will need to flash both the appcore and netcore separately if you are building them as separate images:

To build and program the application sample and the network sample as separate images, follow the instructions in Building on the command line for each of the samples.

Did you have a look through the nRF Connect SDK fundementals course I referenced earlier? It is a quick and easy way to familiarize with the nRF Connect SDK and how to best use it.

Best regards,
Karl