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ESP8266 MQTT client dynamically changing MQTT broker settings

Japio Hardware Contributor 22 Oct 2016, 15:23 last edited by

Hi,

I am working on an ESP8266 MQTT gateway with a web interface to allow th user to configure settings. One of these settings is the MQTT broker IP address and port number.

In the before() I read out the IP address from EEPROM and want to set it in the gateway software, and not as normally done by defining MY_CONTROLLER_IP_ADDRESS.

Is it possible to do this?

I already tried to declare _ethernetControllerIP as external. This doesn't work.
Also tried to skip de definition MY_CONTROLLER_IP_ADDRESS and declar it in the gateway sketch. Didn't work either.
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@OldSurferDude yes, just run the configure command with --my-transport=none
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@OldSurferDude jus request counter states from controller on each reset, worked fine with Domoticz... or save in eeprom but increase location every write, on power up/reset search eeprom for largest value stored and carry on from that location, one long integer will fit 256 times in atmega328(p) eeprom, is that long enough for you ?
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Over 4 years on, and my node ran continuously sending 4 messages every 5 minutes. It's 700mAh LiFePo4 battery voltage dropped from initial 3.45V to 3.24V, according to LiFePo4 voltge/SoC tables It's just under 40% left. 700*60% = 420mAh. 100 mAH per year. using library 2.40 and blob message I could cut usage to ~25mAh/year, not bad
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Development • 31 Jan 2025, 00:59 • bsl88k 4 Feb 2025, 12:14

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4 Feb 2025, 12:14

Thanks for the idea, i will look into it soon, will let know how it goes..
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Development • 13 Nov 2024, 17:06 • Marcin 15 Nov 2024, 10:59

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Thanks for the answer. I meant that Mysensors has ESP32 support but only in terms of WIFI. It supports e.g. stm32 with ENC or W5500 modules - and the question is whether and how to add ESP32 support with LAN8720 module. I am not considering using ESPHOME or MQTT - I want to have native communication with the controller that implements my control schemes on its side. I try to program KC868-A16 but it does not matter - the question is whether such support can be added in a simple way.

ESP8266 MQTT client dynamically changing MQTT broker settings

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ESP8266 MQTT client dynamically changing MQTT broker settings

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