<![CDATA[Unable to compile BasicMQTT - code error]]>I am trying to run the BasicMQTT example but get the following error.

/*****************************************
C:\Users\SteveV\Documents\ESP32_WROOM-Devkit\Projects\BasicMQTT\BasicMQTT.ino: In function 'void setup()':
C:\Users\SteveV\Documents\ESP32_WROOM-Devkit\Projects\BasicMQTT\BasicMQTT.ino:42:3: error: 'ledcSetup' was not declared in this scope
42 | ledcSetup(led::LED_CHANNEL, led::LED_FREQ, led::LED_BITS); // channel, freq, resolution_bits
| ^~~~~~~~~
C:\Users\SteveV\Documents\ESP32_WROOM-Devkit\Projects\BasicMQTT\BasicMQTT.ino:43:3: error: 'ledcAttachPin' was not declared in this scope; did you mean 'ledcAttach'?
43 | ledcAttachPin(led::LED_BUILTIN, led::LED_CHANNEL);
| ^~~~~~~~~~~~~
| ledcAttach

exit status 1

Compilation error: 'ledcSetup' was not declared in this scope
*******************************************/

I have reloaded the code from the web and from the code snippet - both give same error.

Where are the two functions in error supposed to reside?
Cheers

]]>https://forum.gui-o.com/topic/202/unable-to-compile-basicmqtt-code-errorRSS for NodeSun, 10 May 2026 23:39:38 GMTWed, 12 Jun 2024 09:28:33 GMT60<![CDATA[Reply to Unable to compile BasicMQTT - code error on Sat, 15 Jun 2024 09:55:55 GMT]]>@Sato I will update the example, so it is compatible with the new esp32 version.

]]>https://forum.gui-o.com/post/864https://forum.gui-o.com/post/864Sat, 15 Jun 2024 09:55:55 GMT<![CDATA[Reply to Unable to compile BasicMQTT - code error on Sat, 15 Jun 2024 09:54:55 GMT]]>@SteveV No problem! Happy to help!

Best regards.

]]>https://forum.gui-o.com/post/863https://forum.gui-o.com/post/863Sat, 15 Jun 2024 09:54:55 GMT<![CDATA[Reply to Unable to compile BasicMQTT - code error on Fri, 14 Jun 2024 15:34:04 GMT]]>Hi,

"The ESP32 by Espressif Systems v3.0.1 has been installed."

With the v3.0.1 my code not compile and show many errors

Install instead v.2.0

Regards

]]>https://forum.gui-o.com/post/862https://forum.gui-o.com/post/862Fri, 14 Jun 2024 15:34:04 GMT<![CDATA[Reply to Unable to compile BasicMQTT - code error on Fri, 14 Jun 2024 14:23:36 GMT]]>@kl3m3n Hi Klemen,
That certainly fixed the problem - I went back to v2.0.17
I'm a bit long-in-the tooth and I'm not as switched on as I used to be. Thankfully I (we) have a wonderful mentor in yourself, and one who readily picks up the slack when people like me struggle. Thanks for your on-going support.
Cheers Steve

]]>https://forum.gui-o.com/post/861https://forum.gui-o.com/post/861Fri, 14 Jun 2024 14:23:36 GMT<![CDATA[Reply to Unable to compile BasicMQTT - code error on Thu, 13 Jun 2024 21:29:09 GMT]]>@SteveV Hi.

It seems that the API has changed...

Try using esp32 2.x.x version, until i update the example. I think you should be able to uninstall 3.x.x version and revert back to 2.x.x.

Alternatively, you could modify the "ledc" functions to use the new API.

Best regards,
Kl3m3n

]]>https://forum.gui-o.com/post/860https://forum.gui-o.com/post/860Thu, 13 Jun 2024 21:29:09 GMT<![CDATA[Reply to Unable to compile BasicMQTT - code error on Thu, 13 Jun 2024 12:00:28 GMT]]>@kl3m3n G'day Klemen,
I'll try to provide as much info as I can,

My physical board is marked "ESP32_DEVKITC_V4"

The ESP32 by Espressif Systems v3.0.1 has been installed.

The "https://raw.githubusercontent.com/espressif/arduino-esp32/gh-pages/package_esp32_index.json" had been set in preferences.

Unable to specifically find board "ESP32-WROOM-32" (as shown in the video tutorial) - the one that seems to fit closest is uPesy ESP32 Wroom Devkit. (I select com6).

Using this board, I can load TemperatureReader (Episode 1) from the tutorials, set up the network, MQTT in/out compile/run (without error) and run the GUIO on the tablet and everything works perfectly.

As indicated in my last post, I sourced the BasicMQTT code by copying the code snippet as well as downloading from the link in the tutorials just in case there was a code discrepancy

And yet I still get the error previously posted.

Where are the ledc* functions declared? I can't find any reference to them!

I'd appreciate any help as I'm keen to learn more about MQTT for a project I'm developing.
Cheers

]]>https://forum.gui-o.com/post/859https://forum.gui-o.com/post/859Thu, 13 Jun 2024 12:00:28 GMT<![CDATA[Reply to Unable to compile BasicMQTT - code error on Wed, 12 Jun 2024 12:50:51 GMT]]>@SteveV Hi.

Did you install the esp32 board support? Which version are you using?

Please let me know, so I can help you further.

Best regards,
Kl3m3n

]]>https://forum.gui-o.com/post/858https://forum.gui-o.com/post/858Wed, 12 Jun 2024 12:50:51 GMT