MQTT subscribed - how to execute cmds on esp8266?

[tozett]

Hi,
i am faszinated by EasyESP, it has all i ever thought of.
i recently have flashed a ESP01, it running fine, it sends to my mosquitto broker and on the serial-console i saw, it subscribed itself to all /<name> messages, like mine: /Esp01/#

i did not find a lot doku, so my question: What messages can i send, to let the EasyESP on my ESP01 execute (switch-)cmds on the GPIOs ?
i found some pieces in the domoticz-mqtt code, but im not that experienced in programming. can anybody enlighten me?

great thanks,
ozett

[Martinus]

The commands to control output directly were mainly build for a generic http interface. And have mainly been tested through http only.
So using MQTT could bring limitations for output control or could just not work yet. There's some guidance in this tutorial:

http://www.esp8266.nu/index.php/Tutorial_OpenHAB_Switch

I think in your case you could send a message to /Esp01/gpio/2 with value '1' to turn on GPIO-2

[tozett]

Thanks for the quick reply.
i tested it without devices connected to gpio, i must do this later with a led, for example.
but i would have been helpful (at leat to me), if the output of "mosquitto_sub -t /Esp01/#" would show up on the serial console...
there is only some other debug-info running, i may look in the source, if mqtt-messages 'should' show up on the console...

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NIT : Booting Build nr:48
WIFI : Connecting...
INIT : I2C
MQTT : Failed to connected to broker
MQTT : Connected to broker
Subscribed to: /Esp01/#
INIT : Boot OK
INIT : Normal boot
WD   : Uptime 0 ConnectFailures 0 FreeMem 27600
WD   : Uptime 1 ConnectFailures 0 FreeMem 27568
WD   : Uptime 1 ConnectFailures 0 FreeMem 27360
WD   : Uptime 2 ConnectFailures 0 FreeMem 27344

but again, thanks for the quick reply...
(i will investigate, if other cmds beside "on/off" could be send via mqtt...)

[Martinus]

You should see logged MQTT topics if you increase serial log level to 3 or 4.

[tozett]

thanks, i found it in the EaspEasy Webinterface unter Tools/Advanced and set Log-level for serial to 4.
if i send

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mosquitto_pub -t /Esp01/gpio/2 -m on

i can see the manual-entered topic on the serial-console: (how do i validate, if the topic resembles a valid template on ESpEasy?)

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FLASH: Settings saved
WD   : Uptime 23 ConnectFailures 0 FreeMem 25824
MQTT : Topic /Esp01/gpio/2
WD   : Uptime 24 ConnectFailures 0 FreeMem 25824
FLASH: Settings saved
MQTT : Topic /Esp01/gpio/2
WD   : Uptime 24 ConnectFailures 0 FreeMem 25808

The message/cmd (=on/off, 1/0) will not show up there. would be helpful for debugging..

and i found some lines in the source (https://github.com/ESP8266nu/ESPEasy/bl ... /_C005.ino) for

"#define CPLUGIN_NAME_005 "OpenHAB MQTT"

where the receiving-part ends with calling another plugin like:

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 String cmd = topicSplit[1];
        struct EventStruct TempEvent;
        TempEvent.Par1 = topicSplit[2].toInt();
        TempEvent.Par2 = event->String2.toFloat();
        PluginCall(PLUGIN_WRITE, &TempEvent, cmd);
        break;

Does this mean, that i can send everything meaningful (pwm-value 512, on/off) to every GPIO ?

-------
somebody came also to this point: http://www.esp8266.nu/forum/viewtopic.p ... =202#p1424,
but not further...

[ipua]

I am using Openhab and v.147 of ESP Easy.
How I can switch the LCD on or off using MQTT?
I tested

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mosquitto_pub -m 'off' -t /ESP1/cmd/LCDCMD
mosquitto_pub -m 'off' -t /ESP1/LCDCMD
mosquitto_pub -m 'off' -t /ESP1/LCD/lcdcmd
mosquitto_pub -m 'off' -t /ESP1/lcdcmd

without any result.
Same comands (lcdcmd)thru http works fine.
Thanks for help.

[tozett]

i am not sure, if mqtt works generally as input to espeasy.
maybe only in a plugin, where it is coded in.

somebody said try this:

Did you try to send MQTT command to the topic "/<%sysname%>/cmd"; it shoudl work...

somebody else said, you need the mqtt import plugin.

Next, MQTT... I also compiled and loaded the MQTT Import plugin (and Extra Utilities) which appear to have successfully installed. Now, i'm trying to figure out how to publish (externally) to an MQTT topic such as /node2/candle/Brightness and have WiFi Candle brightness be adjusted accordingly without having to go through the UI of the ESP.

but everything discussed for the wifi-candle plugin:
viewtopic.php?f=2&t=2147&hilit=mqtt+cmd&start=40#p12219

in this plugin it goes like this:

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        // MQTT   : mosquitto_pub -d -t sensors/espeasy/ESP_Candle/cmd  -m "CANDLE_OFF"

may the hints could help you..?

[ipua]

Thanks tozett!
Finally I found how to conrtol LCD:

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mosquitto_pub -t /ESP1/cmd -m 'lcdcmd,on'
mosquitto_pub -t /ESP1/cmd -m 'lcdcmd,off'