My Pi is 2B Rev1.1
I connected HC-08 Bluetooth module on pin8,10.
I use Raspberry Pi OS.
In
/boot/configuration.txtenable_uart=1In
/boot/cmdline.txtconsole=tty1 root=PATUUID=e77fdc5c-02 rootfstype=ext4 fsck.repair=yes root wait quiet splash Plymouth.ignore-serial-serialconsolesI upgraded the Pi with the command
sudo apt update &&sudo apt upgradeI installed bluez with the command
sudo apt install bluetooth pi-bluetooth bluez bluemanI checked bluetooth status with the command
sudo systemctl status bluetooth.service. It showsActive:Inactive(dead).Then I try to use
sudo modprobe btusbto get the service up. It showsActive:active(running)I use command
bluetoothctl. There is no device found.After further research. I found the following command
sudo systemctl status hciuart.service. It showsActive:active(dead).And
raspberrypi systemd[1]:conditioncheck resulted in configureBluetooth Modems connected by UART being skippedAfter further research, I tried to use the command
sudo systemctl hciattach /dev/serial0 bcm43xx 115200. It showsbcm43xx_init Initialization timeoutI tried different parameters and still failed to get this done successfully.
So far I am focusing on the error message from hciuart.service. I am trying to figure out what caused the skip.
I am new to the kernel thing. Any help is appreciated.
HC-08module will not be recognised by the RPi as a Bluetooth device and doesn't use the Bluetooth software stack used by the on-board Bluetooth on later RPi models. TheHC-0*Bluetooth UART Communication Modules work as bridges between the serial communication on the pins of the RPi to Bluetooth over the air. You need a serial library to read/write to the HC-08 device. For example PySerial in Python.