esphome-docs/components/sim800l.rst

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Sim800L Component
=================
.. seo::
:description: Instructions for setting up the SIM800L gsm module to send and receive SMS in ESPHome.
:image: sim800l.jpg
:keywords: SMS SIM800L GSM
The ``SIM800L`` Component provides the ability to send and receive SMS text messages. The device must be
connected via a :doc:`UART bus </components/uart>` supporting both receiving and transmitting line.
The uart bus must be configured at the same speed of the module which is by default 9600bps.
The required connection wires are ``+VCC``, ``GND``, ``RX`` and ``TX``.
.. warning::
If you are using the :doc:`logger` make sure you are not using the same pins for ``TX`` and ``RX`` or
otherwise disable the uart logging with the ``baud_rate: 0`` option.
.. note::
This module requires a power supply between 3.8V and 4.2V that can handle current spikes up
to 2 amps, it will not work by powering from the same 3.3v power source of the ESP. However you can
connect ``TX`` and ``RX`` lines directly without any level shifter.
.. figure:: images/sim800l-full.jpg
:align: center
:width: 60.0%
.. code-block:: yaml
# Example configuration entry
uart:
baud_rate: 9600
tx_pin: TX
rx_pin: RX
sim800l:
on_sms_received:
- logger.log:
format: "Received '%s' from %s"
args: [ 'message.c_str()', 'sender.c_str()' ]
Configuration variables:
------------------------
- **uart_id** (*Optional*, :ref:`config-id`): Manually specify the ID of the UART hub.
- **id** (*Optional*, :ref:`config-id`): Manually specify the ID used for code generation.
- **on_sms_received** (*Optional*, :ref:`Automation <automation>`): An action to be
performed when a sms is received. See :ref:`sim800l-on_sms_received`.
.. _sim800l-on_sms_received:
``on_sms_received`` Trigger
---------------------------
With this configuration option you can write complex automations whenever a sms message
is received. To use the message content, use a :ref:`lambda <config-lambda>`
template, the message content and the sender phone number are available inside that lambda
under the variables named ``message`` and ``sender`` respectively.
.. code-block:: yaml
on_sms_received:
- lambda: |-
id(sms_sender).publish_state(sender);
id(sms_message).publish_state(message);
.. _sim800l-send_sms_action:
``sim800l.send_sms`` Action
---------------------------
Send a SMS message to a phone recipient using this action in automations.
.. code-block:: yaml
on_...:
then:
- sim800l.send_sms:
recipient: '+15551234567'
message: Hello there
# Templated:
- sim800l.send_sms:
recipient: !lambda |-
if (id(reed_switch).state) return "+15551234567";
else return "15551234568";
message: !lambda |-
return id(reed_switch).state ? "Door is now OPEN" : "Hey door just CLOSED";
Configuration options:
- **recipient** (***Required**, string, :ref:`templatable <config-templatable>`): The message recipient.
number.
- **message** (**Required**, string, :ref:`templatable <config-templatable>`): The message content.
- **id** (*Optional*, :ref:`config-id`): Manually specify the ID of the Sim800L if you have multiple components.
.. note::
This action can also be written in :ref:`lambdas <config-lambda>`:
.. code-block:: cpp
id(sim800l1).send_sms("+15551234567", "The message content");
Getting started with Home Assistant
-----------------------------------
The following code will get you up and running with a configuration updating received messages
on Home Assistant and will also setup a service so you can send messages with your Sim800L.
.. code-block:: yaml
api:
services:
- service: send_sms
variables:
recipient: string
message: string
then:
- sim800l.send_sms:
recipient: !lambda 'return recipient;'
message: !lambda 'return message;'
text_sensor:
- platform: template
id: sms_sender
name: "Sms Sender"
- platform: template
id: sms_message
name: "Sms Message"
uart:
baud_rate: 9600
tx_pin: TX
rx_pin: RX
sim800l:
on_sms_received:
- lambda: |-
id(sms_sender).publish_state(sender);
id(sms_message).publish_state(message);
Now your latest received sms and sender number will be displayed by the text sensors.
To trigger the automation from Home Assistant you can invoke the service with this code:
.. code-block:: yaml
automation:
# ...
action:
- service: esphome.livingroom_send_sms
data:
recipient: "+15551234567"
message: "Hello World!"
See Also
--------
- :apiref:`sim800l/sim800l.h`
- :doc:`/components/uart`
- :ghedit:`Edit`