alarm-bluetooth-raspberrypi's Introduction

bluetooth-raspberrypi

Arch Linux ARM package enabling integrated Bluetooth on Raspberry Pi 3B/3B+/Zero W.

The idea of this solution is taken from shenghaoyang/blueEnable_ALARM_non_mainline.md. Many thanks to Shenghao Yang.

Instalation

Build and install bluetooth-raspberrypi package. You can also use pre-built packages:

pacman -U https://github.com/RoEdAl/alarm-bluetooth-raspberrypi/releases/download/vx-y/bluetooth-raspberrypi-x-y-any.pkg.tar.xz

Remove the attachment of /dev/ttyAMA0 (/dev/ttyS0 in mini-UART version) to the console from /boot/cmdline.txt.
Add bcmbt overlay to /boot/config.txt file:
```
dtoverlay=bcmbt
```

Kernel messages

Raspberry Pi 3 Model B Plus

[    0.000000] OF: fdt: Machine model: Raspberry Pi 3 Model B Plus Rev 1.3
...
[    7.751931] Bluetooth: hci1: BCM: chip id 107
[    7.754438] Bluetooth: hci1: BCM: features 0x2f
[    7.777740] Bluetooth: hci1: BCM4345C0
[    7.778212] Bluetooth: hci1: BCM (003.001.025) build 0000
[   13.320384] Bluetooth: hci1: BCM (003.001.025) build 0139

For Raspberry Pi 3 Model B Plus kernel tries to load firmware from BCM.hcd instead of BCM4345C0.hcd. As a workaround this package just creates BCM.hcd as symlink to BCM4345C0.hcd.

Raspberry Pi 3 Model B

[    0.000000] OF: fdt: Machine model: Raspberry Pi 3 Model B Rev 1.2
...
[    7.892120] Bluetooth: hci0: BCM: chip id 94
[    7.895277] Bluetooth: hci0: BCM: features 0x2e
[    7.919215] Bluetooth: hci0: BCM43430A1
[    7.920183] Bluetooth: hci0: BCM43430A1 (001.002.009) build 0000
[   11.690212] Bluetooth: hci0: BCM (001.002.009) build 0360

Raspberry Pi Zero W

[    0.000000] OF: fdt: Machine model: Raspberry Pi Zero W Rev 1.1
...
[   12.874297] Bluetooth: hci0: BCM: chip id 94
[   12.877951] Bluetooth: hci0: BCM: features 0x2e
[   12.902263] Bluetooth: hci0: BCM43430A1
[   12.903425] Bluetooth: hci0: BCM43430A1 (001.002.009) build 0000
[   16.772188] Bluetooth: hci0: BCM (001.002.009) build 0360

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