Install MQTT on MangOH Yellow

r0795090 · October 28, 2021, 5:56am

Hi,

I am trying to install mqtt using the following github link: legato-af/apps/sample/mqtt at master · legatoproject/legato-af · GitHub

But when i look at the first command i don’t find any .sdef file. And when i run the command after that i get an error. Do i need to execute another command the didn’t discribed?

jyijyi · October 28, 2021, 6:23am

I have a backup in legato19.2.0
mqttSample.sdef (636 Bytes)

r0795090 · October 28, 2021, 6:26am

Where do i need to place that file? in the mqtt folder or the MangOH folder?

jyijyi · October 28, 2021, 6:41am

I saw it is placed here:

r0795090 · October 28, 2021, 6:54am

Now i got the following error when i try to run this command;

jyijyi · October 28, 2021, 7:07am

how about the release of legato 19.2.0?

r0795090 · October 28, 2021, 7:14am

I got the same error on that version

jyijyi · October 28, 2021, 7:25am

i don’t see the data hub stuff in that version

github.com

legatoproject/legato-af/blob/19.02-release/apps/sample/mqtt/mqttPublisher.adef

sandboxed: true
start: manual

executables:
{
    testPublisher       = (testPublisher)
}

processes:
{
    run:
    {
        (testPublisher)
    }

    faultAction: restart
}

bindings:
{

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r0795090 · October 28, 2021, 7:57am

Do i need to upgrade?

jyijyi · October 28, 2021, 8:09am

you can just take the source code of mqtt sample in legato19.2 and compile the two application for testing.

r0795090 · October 28, 2021, 8:17am

I got again this error when i try it

jyijyi · October 28, 2021, 9:28am

it is impossible as there is no data hub stuff in the adef file

r0795090 · October 28, 2021, 9:33am

Hi

i’ve got it working. i just need to do “make wp77xx” in my mqtt folder and than i got the update files which i can upload to my MangOH.

When I run the program I don’t get my mqtt messages in. I have changed the mqtt broker to broker.emqx.io. when I start sending messages manually through mosquitto I recieved the data. but as soon as I run that program I don’t get anything in. I understood from the program that the topic is the id of your mangoh yellow (4L935170660210). I also subscribe to the same topic

jyijyi · October 28, 2021, 9:42am

you might see this thread and see if it helps:

r0795090 · October 28, 2021, 9:54am

My program can also do a tcp connection but also doesn’t do it. Into my logread i got no errors or something. I just got some file links created

jyijyi · October 28, 2021, 10:32am

You can add some debug message in COMPONENT_INIT() and see if the app is really running

r0795090 · October 28, 2021, 10:41am

I can’t edit my program i got an error in my previouse lines. If i delete the added lines i can execute “make wp77xx” again

jyijyi · October 28, 2021, 12:44pm

I don’t understand what error do you get?

r0795090 · October 28, 2021, 12:49pm

jyijyi · October 28, 2021, 1:13pm

This does not make sense
The original code already has debug message
You should be able to compile that

github.com

legatoproject/legato-af/blob/19.02-release/apps/sample/mqtt/testPublisher/testPublisher.c

/**
 * @file testPublisher.c
 *
 * MQTT Publisher sample application
 *
 * <hr>
 *
 * Copyright (C) Sierra Wireless Inc.
 *
 */

#include "legato.h"
#include "interfaces.h"

//--------------------------------------------------------------------------------------------------
/**
 * Whether connection to MQTT server is secured
 */
//--------------------------------------------------------------------------------------------------
#define MQTT_SERVER_USE_SECURED_CONNECTION 0

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Install MQTT on MangOH Yellow

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