Button usage - stodev-com-br/Tasmota GitHub Wiki
If you have changed ButtonTopic, SetOption1, SetOption11 or SetOption13 some of the listed functionality will be changed or removed.
Toggles the relay. This will blink the LED twice and send an MQTT status message like stat/tasmota/POWER1 ON. If cmnd/tasmota/ButtonRetain on has been used the MQTT message will also contain the MQTT retain flag.
Toggles the second relay (if available on the device). This will blink the LED twice and send an MQTT status message like stat/tasmota/POWER2 on.
Since version 6.5.0.14. any device with more than one power output can be configured to act on a double press to switch the second relay (or for Blitzwolf SHP5 the USB power). To be sure not to activate accidental three button press it is wise to set
SetOption1 1.
Start Wi-Fi smart config allowing for SSID and password configuration using an Android mobile phone with the ESP8266 SmartConfig app. The LED will blink during the config period. A single button press during this period will abort and restart the device. Only in tasmota-classic.bin
Start Wi-Fi manager providing an Access Point with IP address 192.168.4.1 and a web server allowing the configuration of Wi-Fi. The LED will blink during the config period. A single button press during this period will abort and restart the device.
Start Wi-Fi Protected Setup (WPS) allowing for SSID and password configuration using the router's WPS button or web page. The LED will blink during the config period. A single button press during this period will abort and restart the device. Only in tasmota-classic.bin
Restarts the device.
Start OTA update of firmware using OtaUrl. The green LED is lit during the update.
There are two separate functions associated with a button long press based on how long it is held:
- When held continuously for 40 seconds (Configurable with SetOption32, value is 10x the configured hold time) Tasmota will reset to firmware defaults and restart.
- If enabled, button pressed for 4 seconds (Configurable with SetOption32) creates a HOLD action. Check table below on how to enable this function.
⚠️ When a button is configured with a Switchmode that keeps it as ON while depressed it activates the reset to firmware defaults function. Change the button to switch or change switchmode to avoid it.
ButtonTopic 0
Default option
By default a button controls the corresponding relay and doesn't send any MQTT messages itself.
No MQTT message will be published on account of the new button state. The message you see in console is the new state of the relay that is controlled and not the button state.
ButtonTopic 1
Sets MQTT button topic to device %topic%
When changing the state of the button an MQTT message is sent to the device topic with the payload according to SwitchMode set.
Example: Device topic sonoff, SwitchMode 3 yields the following message.
MQT: cmnd/tasmota/POWER = ON
Notice the cmnd instead of the stat at the beginning.
This is the same as sending an MQTT commands to this device, the device relay will be set to the defined state.
ButtonTopic <value>
Set button topic to a custom topic (32 characters max)
This will send an MQTT message to a custom defined topic similarly to option 1.
For example, we set the topic to sonoff02 with ButtonTopic sonoff02.
Example: Device topic sonoff, SwitchMode 1, custom topic sonoff02 yields the following message.
MQT: cmnd/sonoff02/POWER = TOGGLE
If you have a device with the topic sonoff02 this action will toggle its relay while not affecting anything on the sonoff device.
ButtonTopic 0 controls the relay directly.
ButtonTopic 1 sends an MQTT message to the device topic. This sets the state of the devices relay accordingly.
ButtonTopic <value> sends an MQTT message command to the custom topic. This does not change the state of the devices relay.
If a ButtonTopic (and if SetOption1 1) or SwitchTopic 1 is defined (and SwitchMode is set to 5 or 6) and a button is pressed longer than defined Key Hold Time (SetOption32 default 4 seconds) an MQTT message like cmnd/%topic%/POWER HOLD will be sent. HOLD can be changed with StateText4.
Command SetOption11 allows for swapping the functionality of the push button.
These changes result in the following table (larger image):
You can control a ceiling fan from a Sonoff Touch:
If your standard topic of Sonoff Touch is light and the ceiling fan topic is ceilingfan issue these commands on the Sonoff Touch to activate the double press feature.
buttontopic ceilingfan
setoption11 1
All of the above is easier accomplished using Rules!