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MQTT with Eclipse Paho [message #1778226]

Tue, 12 December 2017 07:09

Barry wan

Messages: 36
Registered: July 2017

Member

hi，
I try to use MQTT follows the document MQTT with Eclipse Paho
https://www.eclipse.org/4diac/en_help.php, In step 3,I can't find the
FORTE_COM_PHAOMQTT_INCLUDE_LIB and FORTE_COM_PHAOMQTT_INCLUDE_LIB_DIR (Fig.1)item in my cmake gui (Fig.2);
do I need to change CMakeLists.txt ? If I need,so how?

Attachment: Fig1.PNG
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Attachment: Fig2.PNG
(Size: 80.31KB, Downloaded 45 times)

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Re: MQTT with Eclipse Paho [message #1778228 is a reply to message #1778226]

Tue, 12 December 2017 07:31

Jose Maria Jesus Cabral Lassalle

Messages: 103
Registered: February 2016

Senior Member

Are you on the develop branch of forte? These properties are on the develop branch and not in the master.

Also, there's a small step missing in the documentation. After you check FORTE_COM_PAHOMQTT, you should press "Configure" and the options you mentioned will appear

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Re: MQTT with Eclipse Paho [message #1778233 is a reply to message #1778226]

Tue, 12 December 2017 07:50

Martin Melik-Merkumians

Messages: 47
Registered: March 2016

Member

The PHAO stuff is a typo, it should read PAHO everywhere

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Re: MQTT with Eclipse Paho [message #1778266 is a reply to message #1778228]

Tue, 12 December 2017 13:12

Barry wan

Messages: 36
Registered: July 2017

Member

thank you for your reply！
I'm not on the branch of forte. i want to develep a function block to control motor with PWM on Respberry. but i'm not very fimiliar to forte, and i saw a topic about it .https://www.eclipse.org/forums/index.php/t/1080117/ a reply from Professor Alois advice to have a look at the mqtt_paho module for examples, so I want
run it first.
But after Configuring, I still can not find the item FORTE_COM_PHAOMQTT_INCLUDE_LIB ,would you mind giving more details?

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Re: MQTT with Eclipse Paho [message #1778332 is a reply to message #1778266]

Wed, 13 December 2017 08:44

Jose Maria Jesus Cabral Lassalle

Messages: 103
Registered: February 2016

Senior Member

Alois advice was regarding on how to include a library in Forte. For that you should change the CMakeLists.txt and add forte_add_link_library. The MQTT module adds a new library to Forte, that's why he's using it as an example.
Regarding the FORTE_COM_PHAOMQTT_INCLUDE_LIB, you're right, they have not only a typo but a wrong name. They should be FORTE_COM_PAHOMQTT_LIB and FORTE_COM_PAHOMQTT_LIB_DIR.

Anyhow, these variables are present in the develop branch only, and you should change to it by going to your forte folder and executing:

$ git checkout develop

then clean your cache in CMake and configure it again.

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