Xradio XR829 Bluetooth

This repo contains multiple branches to store different files.

• main (readme and patches)
• bluez-5.54 (bluez source code)
• bluez-5.54-xradio (bluez source code with xradio patches)

Please use this command to clone the repo

$ git clone https://github.com/Sakura-Pi/Xradio-XR829-Bluetooh --branch <branch> --depth 1

XRadio uses bluez open source Bluetooth stack for their bt/wlan transceivers. When XR829 has been awaken, it use UART to download the firmware to the device. It's totally in the userspace rather than the driver.

This repo is tested under Allwinner H3 (Armbian bullseye distribution) with kernel version 5.15.93.

Installation

bluez

You may need install the packages first

$ sudo apt install -y
    libtool \
    libglib2.0-dev \
    libdbus-1-dev \
    libudev-dev \
    libical-dev \
    libreadline-dev \
    elfutils \
    libdw-dev \
    libalsa-ocaml-dev \
    libsbc-dev \
    python3-docutils \
    libjson-c-dev

Then clone this repo with branch bluez-5.54-xradio, check it out, run bootstrap, and configure make and ready to compile.

$ ./bootstrap
$ ./configure \
    --enable-static \
    --enable-shared \
    --enable-client \
    --enable-datafiles \
    --enable-experimental \
    --enable-library \
    --enable-monitor \
    --enable-obex \
    --enable-threads \
    --enable-tools \
    --disable-android \
    --disable-cups \
    --disable-manpages \
    --disable-sixaxis \
    --disable-systemd \
    --disable-test \
    --disable-udev \
    --enable-deprecated \
    --enable-mesh \
    --localstatedir=/etc

compile and install it.

$ make -j<cpu cores>
$ sudo make install

xradio_btlpm

This driver is sunxi dedicated, It may not work on the other platform. It responded to awake/sleep the ble device or awake linux from ble device via the GPIO pin.

Apply the patch/xradio_btlpm.patch to your kernel, and enable the kernel option:

• CONFIG_XR_BT_LPM=m

device tree

/ {

  /* Your board definitions */

  ble_enable: rfkill {
    compatible = "rfkill-gpio";
    label = "rfkill-xr829-ble";
    radio-type = "bluetooth";
    shutdown-gpios = <&pio 0 6 GPIO_ACTIVE_LOW>; /* PA6 */
    status = "okay";
  };

  btlpm: btlpm@0 {
    compatible  = "allwinner,sunxi-btlpm";
    uart_index  = <0x1>;
    bt_wake     = <&pio 6 12 GPIO_ACTIVE_HIGH>; /* PG12 */
    bt_hostwake = <&pio 6 13 GPIO_ACTIVE_HIGH>; /* PG13 */
    status      = "okay";
  };

}

Use the ble

After installation, you can use this command to bring up it:

$ hciattach -n /dev/ttyS1 xr829

It causes the XR829 to reset, awaken, and start accepting firmware which located at '/lib/firmware/fw_xr829_bt.bin'. After the boot, you can use it.

Thanks

• Upstream bluez maintainers
• ssp97