Bluetooth interface not found

Ratataplam — Tue, 19 Apr 2022 09:17:52 GMT

Hi folks,

I'm tryint to use bluetooth interface on my ev board (iMX8 with yocto) whit a sample program.

The firs instruction of this applicatio is :

hci_get_route

but it returns a errno code "no such device" so I try to run\activate the BT interface via :

systemctl enable bluetooth.service systemctl start bluetooth.service

and check the state with

systemctl status bluetooth.service

and the response is "running" but the problem on hci_get_route call persist.
I've tryed also via shell with

hcitool dev

to discover the bluetooth interface but the response is empty.

Any suggestion?

Re: Bluetooth interface not found

Ratataplam — Tue, 19 Apr 2022 11:28:17 GMT

The solution is, via command lines, types :

1) brcm_patchram_plus --patchram /etc/firmware/BCM43430A1.1DX.hcd --enable_hci --no2bytes --tosleep 50000 --baudrate 1000000 --use_baudrate_for_download /dev/ttyUSB0 & hciconfig -a 2) hciattach /dev/ttyUSB0 any 3) hciconfig hci0 up

after this 3 steps

hcitool dev

show the bt interface and the call at

hci_get_route

works. The step 1 is not necessary after hw reboot, you need only to execute step 2 & 3

topic Bluetooth interface not found in Embedded Software and Tools Clinic

Bluetooth interface not found

Re: Bluetooth interface not found