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Update keyboard_remote.markdown (#1774)

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* Update keyboard_remote.markdown

Added info and examples on events when keyboard disconnects or reconnects.
Added info on how to set permissions on the event input device file.

* Update keyboard_remote.markdown

* Update keyboard_remote.markdown

* Update keyboard_remote.markdown
This commit is contained in:
Gianluca Barbaro 2017-01-15 23:06:35 +01:00 committed by Paulus Schoutsen
parent 76f0881d49
commit 9f5b9975b9
1 changed files with 51 additions and 3 deletions
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54
source/_components/keyboard_remote.markdown
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@ -1,6 +1,6 @@
---
layout: page
title: "Keyboard"
title: "Keyboard Remote"
description: "Instructions how to use a keyboard to remote control Home Assistant."
date: 2016-09-28 14:39
sidebar: true
@ -23,13 +23,13 @@ The `evdev` package is used to interface with the keyboard and thus this is Linu
```yaml
# Example configuration.yaml entry
keyboard_remote:
device_descriptor: '/dev/input/by-id/foo'
device_descriptor: '/dev/input/event12'
type: 'key_up'
```
Configuration variables:
- **device_descriptor** (*Required*): List of URLS for your feeds.
- **device_descriptor** (*Required*): Path to the local event input device file that corresponds to the keyboard.
- **type** (*Required*): Possible values are `key_up`, `key_down`, and `key_hold`. Be careful, `key_hold` will fire a lot of events.
And an automation rule to breathe life into it:
@ -46,3 +46,51 @@ automation:
service: light.turn_on
entity_id: light.all
```
## {% linkable_title Disconnections %}
This component manages disconnections and re-connections of the keyboard, for example in the case of a bluetooth device that turns off automatically to preserve battery.
If the keyboard disconnects, the component will fire an event `keyboard_remote_disconnected`.
When the keyboard reconnects an event `keyboard_remote_connected` will be fired.
Here's an automation example that plays a sound through a media player whenever the keyboard connects/disconnects:
```yaml
automation:
- alias: Keyboard Connected
trigger:
platform: event
event_type: keyboard_remote_connected
action:
- service: media_player.play_media
data:
entity_id: media_player.speaker
media_content_id: keyboard_connected.wav
media_content_type: music
- alias: Keyboard Disconnected
trigger:
platform: event
event_type: keyboard_remote_disconnected
action:
- service: media_player.play_media
data:
entity_id: media_player.speaker
media_content_id: keyboard_disconnected.wav
media_content_type: music
```
## {% linkable_title Permissions %}
There might be permissions problems with the event input device file. If this is the case, the user that hass runs as must be allowed read and write permissions with:
```
sudo setfacl -m u:HASS_USER:rw /dev/input/event*
```
where `HASS_USER` is the user hass runs as and `event*` is the event input device file your keyboard is connected to.
If you want to make this permanent, you can use a udev rule that sets it for your event input device. Add a file `/etc/udev/rules.d/99-userdev-input.rules` containing:
```
KERNEL=="event*", SUBSYSTEM=="input", RUN+="/usr/bin/setfacl -m u:HASS_USER:rw $env{DEVNAME}"
```
You can check the ACLs permission with
```
getfacl /dev/input/event*
```