Starting from HomeAssistant 2021.7.0, the CEC libraries included in HomeAssistant do no longer support CEC interfaces that are not included in the Linux kernel itself. Therefore, it is no longer possible to control the HDMI-CEC bus through the hdmi-cec integration alone.
However, the hdmi-cec integration supports talking to an HDMI-CEC device over a TCP socket. This add-on launches a HDMI-CEC server which supports the Raspberry Pi hardware interface.
First, enable the https://github.com/samueltardieu/homeassistant-addons repository in
the "Addons" configuration section of Home Assistant.
After enabling this add-on and configuring it
to automatically start, one can use the following in HomeAssistant configuration.yaml:
hdmi_cec:
host: 58c14403-pi-cecand restart HomeAssistant. You should then be able to control your HDMI-CEC devices with the integration commands.
For the curious, 58c14403 is the SHA-1 hash
of the string https://github.com/samueltardieu/homeassistant-addons and is computed
from the repository name by HomeAssistant.
The icon is part of iconscount display icon collection.
The libraries that pycec uses require there be 128M of memory allocated to the GPU.
If you see any strange assertions in the logs, use raspi-config to change that value.
If you see messages such as
Apr 6 23:06:53 s140n-hass 37dcc20d3026[1330]: /usr/local/lib/python3.8/site-packages/pycec/network.py:431: DeprecationWarning: The loop argument is deprecated since Python 3.8, and scheduled for removal in Python 3.10.
know that this is due to pyCEC.