mirror of
https://github.com/pikvm/pikvm
synced 2024-11-01 09:20:17 +00:00
144d844fd5
* Update bluetooth_hid.md Added reversal steps * Update bluetooth_hid.md Fixed my spelling mistake
60 lines
2.6 KiB
Markdown
60 lines
2.6 KiB
Markdown
# Bluetooth HID
|
|
Pi-KVM is able to emulate a Bluetooth keyboard & mouse.
|
|
This is not the main case of using Pi-KVM since you still need it to pair with a remote host, but can be used for something like mobile KVM.
|
|
|
|
:exclamation: Using Bluetooth HID requires additional configuration of the operating system. For v2, this means losing the UART port,
|
|
since it will be used by Bluetooth. Also, Bluetooth operation was tested only on RPi4 and v2 platform. Other boards may require different system service settings.
|
|
|
|
:exclamation: Bluetooth mouse can work only in [relative mode](mouse.md). The reason is that many Bluetooth host drivers do not correctly implement HID descriptors. Horizontal scrolling is not supported for the same reason.
|
|
|
|
# Configuring the OS
|
|
1. Switch filesystem to RW-mode, perform update and install some packages:
|
|
```
|
|
# rw
|
|
# pacman -Syu
|
|
# pacman -S bluez bluez-utils raspberrypi-bluetooth
|
|
```
|
|
2. Edit `/boot/config.txt` and comment these lines:
|
|
```
|
|
#enable_uart=1
|
|
#dtoverlay=disable-bt
|
|
```
|
|
3. Create an empty directory `/var/lib/bluetooth` and add mountpoint to `/etc/fstab`:
|
|
```
|
|
# mkdir /var/lib/bluetooth
|
|
# echo 'tmpfs /var/lib/bluetooth tmpfs nodev,nosuid,mode=0755 0 0' >> /etc/fstab
|
|
```
|
|
4. Override and enable the services:
|
|
```
|
|
# mkdir /etc/systemd/system/bluetooth.service.d
|
|
# cat << EOF > /etc/systemd/system/bluetooth.service.d/override.conf
|
|
[Service]
|
|
ExecStart=
|
|
ExecStart=/usr/lib/bluetooth/bluetoothd --noplugin=*
|
|
EOF
|
|
# systemctl enable bluetooth
|
|
# systemctl enable raspberrypi-btuart
|
|
```
|
|
5. Override `kvmd` service:
|
|
```
|
|
# mkdir /etc/systemd/system/kvmd.service.d
|
|
# cat << EOF > /etc/systemd/system/kvmd.service.d/override.conf
|
|
[Service]
|
|
AmbientCapabilities=CAP_NET_RAW CAP_NET_BIND_SERVICE CAP_SYS_ADMIN CAP_SETUID CAP_SETGID CAP_CHOWN
|
|
CapabilityBoundingSet=CAP_NET_RAW CAP_NET_BIND_SERVICE CAP_SYS_ADMIN CAP_SETUID CAP_SETGID CAP_CHOWN
|
|
EOF
|
|
```
|
|
6. Add following lines to `/etc/kvmd/override.yaml`:
|
|
```yaml
|
|
kvmd:
|
|
hid:
|
|
type: bt
|
|
```
|
|
7. Perform reboot: `reboot`.
|
|
8. To reverse, uncomment lines from Step 2 and remove lines in Step 6, ```reboot```
|
|
|
|
# Using Bluetooth HID
|
|
* After a reboot, the Pi-KVM will be ready for detection and pairing with no auth. You will see the `Pi-KVM HID` device.
|
|
* Once the server is connected, Pi-KVM will no longer be discoverable and pairable to other clients until you unpair the server.
|
|
* If something went wrong, use the web menu `System -> Reset keyboard & mouse`. This will cause unpair the device and switch the Pi-KVM to public mode before the first client is connected.
|