mirror of
https://github.com/esphome/esphome-docs.git
synced 2024-11-05 09:20:08 +01:00
57 lines
1.9 KiB
ReStructuredText
57 lines
1.9 KiB
ReStructuredText
ESP32 LEDC Output
|
||
=================
|
||
|
||
.. seo::
|
||
:description: Instructions for setting up LEDC hardware PWM outputs on the ESP32.
|
||
:image: pwm.png
|
||
|
||
The LEDC output component exposes a `LEDC PWM
|
||
channel <https://docs.espressif.com/projects/esp-idf/en/latest/api-reference/peripherals/ledc.html>`__
|
||
of the ESP32 as an output component.
|
||
|
||
The frequency range of LEDC is from 10Hz to 40MHz - however, higher frequencies require a smaller
|
||
bit_depth which means the output is not that accurate for frequencies above ~300kHz.
|
||
|
||
.. code-block:: yaml
|
||
|
||
# Example configuration entry
|
||
output:
|
||
- platform: ledc
|
||
pin: GPIO19
|
||
id: gpio_19
|
||
|
||
# Example usage in a light
|
||
light:
|
||
- platform: monochromatic
|
||
output: gpio_19
|
||
name: "Kitchen Light"
|
||
|
||
Configuration variables:
|
||
------------------------
|
||
|
||
- **pin** (**Required**, :ref:`config-pin`): The pin to use LEDC on. Can only be GPIO0-GPIO33.
|
||
- **id** (**Required**, :ref:`config-id`): The id to use for this output component.
|
||
- **frequency** (*Optional*, float): At which frequency to run the LEDC
|
||
channel’s timer. Defaults to 1000Hz.
|
||
- **bit_depth** (*Optional*, int): The bit depth to use for the LEDC channel. Defaults to the
|
||
highest possible for the configured frequency.
|
||
- All other options from :ref:`Output <config-output>`.
|
||
|
||
Advanced options:
|
||
|
||
- **channel** (*Optional*, int): Manually set the `LEDC
|
||
channel <https://docs.espressif.com/projects/esp-idf/en/latest/api-reference/peripherals/ledc.html#configure-channel>`__
|
||
to use. Two adjacent channels share the same timer. Defaults to an automatic selection.
|
||
|
||
See Also
|
||
--------
|
||
|
||
- :doc:`/components/output/index`
|
||
- :doc:`/components/output/esp8266_pwm`
|
||
- :doc:`/components/light/monochromatic`
|
||
- :doc:`/components/fan/speed`
|
||
- :doc:`/components/power_supply`
|
||
- :apiref:`ledc/ledc_output.h`
|
||
- `esp-idf LEDC API docs <https://docs.espressif.com/projects/esp-idf/en/latest/api-reference/peripherals/ledc.html>`__
|
||
- :ghedit:`Edit`
|