Upstream
/
esphome-docs
mirror of https://github.com/esphome/esphome-docs.git
1
0
Fork 0
Code Issues Projects Releases Wiki Activity

Fix units on the valid frequency values (#170) 

Fixed the units on the valid frequency values. Also cleaned up upper/lower case.
This commit is contained in:
Ken Davidson 2019-02-24 06:26:26 -05:00 committed by Otto Winter
parent 3a01257a50
commit 514e0a2c1d
1 changed files with 9 additions and 9 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

18
components/i2c.rst
View File

@ -4,12 +4,12 @@ I²C Bus
=======
.. seo::
:description: Instructions for setting up the i2c bus to communicate with 2-wire devices in ESPHome
:description: Instructions for setting up the I²C bus to communicate with 2-wire devices in ESPHome
:image: i2c.png
:keywords: i2c, iic, bus
This component sets up the i²c bus for your ESP32 or ESP8266. In order for those components
to work correctly, you need to define the i²c bus in your configuration. Please note the ESP
This component sets up the I²C bus for your ESP32 or ESP8266. In order for those components
to work correctly, you need to define the I²C bus in your configuration. Please note the ESP
will enable its internal 10kΩ pullup resistors for these pins, so you usually don't need to
put on external ones.
@ -24,20 +24,20 @@ put on external ones.
Configuration variables:
------------------------
- **sda** (*Optional*, :ref:`config-pin`): The pin for the data line of the i²c bus.
- **sda** (*Optional*, :ref:`config-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).
- **scl** (*Optional*, :ref:`config-pin`): The pin for the clock line of the i²c bus.
- **scl** (*Optional*, :ref:`config-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 ESPHome should do a search of the i2c address space on startup.
- **scan** (*Optional*, boolean): If ESPHome 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): Set the frequency the i²c bus should operate on.
Defaults to ``50KHz``. Values are ``50KHz``, ``100KHz``, ``200KHz``, ... ``800KHz``
- **frequency** (*Optional*, float): Set the frequency the I²C bus should operate on.
Defaults to ``50kHz``. Values are ``50kHz``, ``100kHz``, ``200kHz``, ... ``800kHz``
.. note::
If you're using the ESP32 and i2c frequently is showing errors in the logs, try with the latest
If you're using the ESP32 and I²C frequently is showing errors in the logs, try with the latest
version of the Arduino framework. See :ref:`esphome-arduino_version` for information on how to do this.
See Also