mirror of
https://github.com/esphome/esphome-docs.git
synced 2024-12-24 17:08:15 +01:00
207 lines
7.1 KiB
ReStructuredText
207 lines
7.1 KiB
ReStructuredText
SX1509 16 channel I/O Expander with LED driver and keypad engine
|
|
================================================================
|
|
|
|
.. seo::
|
|
:description: Instructions for setting up SX1509 16 channel I/O expander in ESPHome.
|
|
:image: sx1509.jpg
|
|
|
|
The SX1509 component allows you to expand your I/O capabilities:
|
|
(`datasheet <https://www.semtech.com/uploads/documents/sx1509_evk_users_guide.pdf>`__,
|
|
`SparkFun`_) in ESPHome. It uses :ref:`I²C Bus <i2c>` for communication.
|
|
|
|
Once configured, you can use any of the 16 pins as pins for your projects.
|
|
Within ESPHome they emulate a real internal GPIO pin
|
|
and can therefore be used with many of ESPHome's components such as the GPIO
|
|
binary sensor or GPIO switch.
|
|
The SX1509 can do much more than just simple digital pin control. It can produce PWM signals.
|
|
And, with a built-in keypad engine, it can interface with up to 64 buttons set up in an 8x8 matrix.
|
|
|
|
Any option accepting a :ref:`Pin Schema <config-pin_schema>` can theoretically be used, but some more
|
|
complicated components that use the pin schema will not work. For example the I²C or SPI pins.
|
|
|
|
.. figure:: images/sx1509-full.jpg
|
|
:align: center
|
|
:width: 80.0%
|
|
|
|
SX1509 16 channel I/O Expander.
|
|
|
|
.. _SparkFun: https://learn.sparkfun.com/tutorials/sx1509-io-expander-breakout-hookup-guide/all
|
|
|
|
.. code-block:: yaml
|
|
|
|
# Example configuration entry for the SX1509 device
|
|
sx1509:
|
|
- id: sx1509_hub1
|
|
address: 0x3E
|
|
# If you need a keypad
|
|
keypad:
|
|
key_rows: 3
|
|
key_columns: 4
|
|
sleep_time: 256
|
|
scan_time: 2
|
|
debounce_time: 1
|
|
|
|
Configuration variables:
|
|
------------------------
|
|
|
|
- **id** (**Required**, :ref:`config-id`): The id to use for this SX1509 component.
|
|
- **address** (*Optional*, int): The I²C address of the driver.
|
|
Defaults to ``0x3E``.
|
|
|
|
The SX1509 integrates a fully programmable keypad scanning engine to implement keypad applications.
|
|
up to 8x8 matrix (i.e. 64 keys).
|
|
|
|
- **keypad** (*Optional*): Add this to enable the keypad.
|
|
|
|
- **key_rows** (**Required**, int): The number of keypad rows to use. This enables any number of the first 7 pins.
|
|
So a value of 3 enables pins 0,1,2 to be used as the rows for the keypad matrix. This value must be between 1 and 8.
|
|
- **key_columns** (**Required**, int): The number of keypad columns to use. This enables any number of the last 7 pins.
|
|
So a value of 4 enables pins 8,9,10,11 to be used as the columns for the keypad matrix. This value must be between 1 and 8.
|
|
- **sleep_time** (*Optional*, int): No key press within this time will set keypad engine to sleep.
|
|
- **scan_time** (*Optional*, int): Scan time per row (must be set above debounce time).
|
|
- **debounce_time** (*Optional*, int): The debounce time is common to all IOs.
|
|
|
|
.. figure:: images/sx1509-keypad.jpg
|
|
:align: center
|
|
:width: 80.0%
|
|
|
|
SX1509 pins for keypad setup (image from the datasheet).
|
|
|
|
Attention should be paid to the capabilities of the I/O pins.
|
|
|
|
+-----+------------------+--------------+
|
|
| # | pin function | Keypad |
|
|
| | | +
|
|
+=====+==================+=====+========+
|
|
| I/O | input output PWM | Row | Column |
|
|
+-----+------------------+-----+--------+
|
|
| 0 | ✓ | ✓ | |
|
|
+-----+------------------+-----+--------+
|
|
| 1 | ✓ | ✓ | |
|
|
+-----+------------------+-----+--------+
|
|
| 2 | ✓ | ✓ | |
|
|
+-----+------------------+-----+--------+
|
|
| 3 | ✓ | ✓ | |
|
|
+-----+------------------+-----+--------+
|
|
| 4 | ✓ | ✓ | |
|
|
+-----+------------------+-----+--------+
|
|
| 5 | ✓ | ✓ | |
|
|
+-----+------------------+-----+--------+
|
|
| 6 | ✓ | ✓ | |
|
|
+-----+------------------+-----+--------+
|
|
| 7 | ✓ | ✓ | |
|
|
+-----+------------------+-----+--------+
|
|
| 8 | ✓ | | ✓ |
|
|
+-----+------------------+-----+--------+
|
|
| 9 | ✓ | | ✓ |
|
|
+-----+------------------+-----+--------+
|
|
| 10 | ✓ | | ✓ |
|
|
+-----+------------------+-----+--------+
|
|
| 11 | ✓ | | ✓ |
|
|
+-----+------------------+-----+--------+
|
|
| 12 | ✓ | | ✓ |
|
|
+-----+------------------+-----+--------+
|
|
| 13 | ✓ | | ✓ |
|
|
+-----+------------------+-----+--------+
|
|
| 14 | ✓ | | ✓ |
|
|
+-----+------------------+-----+--------+
|
|
| 15 | ✓ | | ✓ |
|
|
+-----+------------------+-----+--------+
|
|
|
|
Binary Sensor
|
|
=============
|
|
|
|
To use the individual keys on the keypad you need to add individual binary_sensor entries in the config.
|
|
|
|
.. code-block:: yaml
|
|
|
|
# individual binary_sensor for keypad keys
|
|
binary_sensor:
|
|
- platform: sx1509
|
|
sx1509_id: sx1509_hub1
|
|
name: "keypadkey_0"
|
|
row: 0
|
|
col: 0
|
|
- platform: sx1509
|
|
sx1509_id: sx1509_hub1
|
|
name: "keypadkey_1"
|
|
row: 0
|
|
col: 1
|
|
|
|
Configuration variables:
|
|
------------------------
|
|
|
|
- **row** (**Required**, int): The row number for this key on the keypad.
|
|
- **col** (**Required**, int): The column number for this key on the keypad.
|
|
|
|
|
|
Pin configuration variables:
|
|
----------------------------
|
|
|
|
With the following configuration items you may use the individual pins of the SX1509 as the pins for binary_sensor, switch, or output.
|
|
The outputs can in turn be used to add PWM-enabled lights like the monochromatic light.
|
|
|
|
.. code-block:: yaml
|
|
|
|
# individual binary_sensor inputs
|
|
binary_sensor:
|
|
- platform: gpio
|
|
name: "SX1509 Pin #0"
|
|
pin:
|
|
sx1509: sx1509_hub1
|
|
# Use pin number 0 on the SX1509
|
|
number: 0
|
|
mode:
|
|
input: true
|
|
pullup: true
|
|
inverted: true
|
|
|
|
# Individual binary outputs
|
|
switch:
|
|
- platform: gpio
|
|
name: "SX1509 Pin #1"
|
|
pin:
|
|
sx1509: sx1509_hub1
|
|
# Use pin number 1 on the SX1509
|
|
number: 1
|
|
# use as output for switch
|
|
mode:
|
|
output: true
|
|
inverted: false
|
|
|
|
# Individual outputs
|
|
output:
|
|
- platform: sx1509
|
|
sx1509_id: sx1509_hub1
|
|
id: 'sx1509_output'
|
|
# Use pin number 2 on the SX1509
|
|
pin: 2
|
|
|
|
# lights can then use the configured output
|
|
light:
|
|
- platform: monochromatic
|
|
id: light0
|
|
name: "light0"
|
|
output: sx1509_output
|
|
|
|
|
|
- **sx1509** (**Required**, :ref:`config-id`): The id of the SX1509 component of the pin.
|
|
- **number** (**Required**, int): The pin number.
|
|
- **inverted** (*Optional*, boolean): If all read and written values
|
|
should be treated as inverted. Defaults to ``false``.
|
|
- **mode** (*Optional*, string): A pin mode to set for the pin at. One of ``INPUT``,
|
|
``INPUT_PULLUP`` or ``OUTPUT``.
|
|
|
|
|
|
And naturally you may use all automation functions with these SX1509 binary_sensors, switches and output (lights).
|
|
|
|
See Also
|
|
--------
|
|
|
|
- :ref:`i2c`
|
|
- :doc:`switch/gpio`
|
|
- :doc:`binary_sensor/gpio`
|
|
- :doc:`/components/light/monochromatic`
|
|
- :apiref:`sx1509/sx1509.h`
|
|
- :ghedit:`Edit`
|