67 lines
2.6 KiB
ReStructuredText
67 lines
2.6 KiB
ReStructuredText
|
I²C Bus
|
|||
|
|
=======
|
|||
|
|
|
|||
|
|
This component sets up the i²c bus for your ESP32 or ESP8266. It’s used
|
|||
|
|
for several other components:
|
|||
|
|
|
|||
|
|
======================= ======================= =======================
|
|||
|
|
|PCA9685 PWM|_ |ADS1115|_ |BMP085|_
|
|||
|
|
----------------------- ----------------------- -----------------------
|
|||
|
|
`PCA9685 PWM`_ `ADS1115`_ `BMP085`_
|
|||
|
|
----------------------- ----------------------- -----------------------
|
|||
|
|
|HDC1080|_ |HTU21D|_ |MPU6050|_
|
|||
|
|
----------------------- ----------------------- -----------------------
|
|||
|
|
`HDC1080`_ `HTU21D`_ `MPU6050`_
|
|||
|
|
======================= ======================= =======================
|
|||
|
|
|
|||
|
|
.. |PCA9685 PWM| image:: /esphomeyaml/pca9685.jpg
|
|||
|
|
:class: component-image
|
|||
|
|
.. _PCA9685 PWM: /esphomeyaml/components/output/pca9685.html
|
|||
|
|
|
|||
|
|
.. |ADS1115| image:: /esphomeyaml/ads1115.jpg
|
|||
|
|
:class: component-image
|
|||
|
|
.. _ADS1115: /esphomeyaml/components/sensor/ads1115.html
|
|||
|
|
|
|||
|
|
.. |BMP085| image:: /esphomeyaml/bmp180.jpg
|
|||
|
|
:class: component-image
|
|||
|
|
.. _BMP085: /esphomeyaml/components/sensor/bmp085.html
|
|||
|
|
|
|||
|
|
.. |HDC1080| image:: /esphomeyaml/HDC1080.jpg
|
|||
|
|
:class: component-image
|
|||
|
|
.. _HDC1080: /esphomeyaml/components/sensor/hdc1080.html
|
|||
|
|
|
|||
|
|
.. |HTU21D| image:: /esphomeyaml/htu21d.jpg
|
|||
|
|
:class: component-image
|
|||
|
|
.. _HTU21D: /esphomeyaml/components/sensor/htu21d.html
|
|||
|
|
|
|||
|
|
.. |MPU6050| image:: /esphomeyaml/mpu6050.jpg
|
|||
|
|
:class: component-image
|
|||
|
|
.. _MPU6050: /esphomeyaml/components/sensor/mpu6050.html
|
|||
|
|
|
|||
|
|
In order for those components to work correctly, you need to define the
|
|||
|
|
i²c bus in your configuration.
|
|||
|
|
|
|||
|
|
.. code:: yaml
|
|||
|
|
|
|||
|
|
# Example configuration entry
|
|||
|
|
i2c:
|
|||
|
|
sda: 21
|
|||
|
|
scl: 22
|
|||
|
|
scan: False
|
|||
|
|
|
|||
|
|
Configuration variables:
|
|||
|
|
~~~~~~~~~~~~~~~~~~~~~~~~
|
|||
|
|
|
|||
|
|
- **sda** (*Optional*, `pin </esphomeyaml/configuration-types.html#pin>`__): The pin for the data line of the i²c bus.
|
|||
|
|
Defaults to the default of your board (usually GPIO21 for ESP32 and
|
|||
|
|
GPIO4 for ESP8266).
|
|||
|
|
- **sdc** (*Optional*, `pin </esphomeyaml/configuration-types.html#pin>`__): The pin for the clock line of the i²c bus.
|
|||
|
|
Defaults to the default of your board (usually GPIO22 for ESP32 and
|
|||
|
|
GPIO5 for ESP8266).
|
|||
|
|
- **scan** (*Optional*, boolean): If esphomelib should do a search of the i2c address space on startup.
|
|||
|
|
Note that this can slow down startup and is only recommended for when setting up new sensors. Defaults to
|
|||
|
|
``False``.
|
|||
|
|
- **frequency** (*Optional*, float): Only on ESP32. Set the frequency
|
|||
|
|
the i²c bus should operate on. Defaults to “100kHz”. Accepts most
|
|||
|
|
metric suffixes.
|