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Last activity 2017-06-14 15:27:20 +0200 by gimc

mqtt multiple ipv6 links

Hi!

I have two PCA10040 boards and I'm running the MQTT publisher example in both using a Raspberry Pi 3 Model B as a gateway.

Therefore, both boards are establishing and IPV6 link and transmitting the information to the ... (more)

68
views
1
vote
1
answer
Last activity 2017-05-22 11:02:10 +0200 by Petter Myhre flag of Norway

Join SPI and IPv6 over BLE

Hello!

I have the board PCA10040 (nRF52 DK).

I designed two different programs:

  • SPI: I'm using the SPI communication to communicate with an external sensor (accelerometer). I used the latest SDK version: v13.0.0.
  • MQTT publisher/subscriber: I ...
(more)

867
views
no
votes
3
answers
Last activity 2017-04-20 13:54:55 +0200 by g.joshi

MQTT Example - Settings for publishing while subscribing?

Hi, I use the following.

  • Raspberry Pi 3 (RPi3 with Raspbian Jessie 4.4) as a router,

RPi3 is connected to a Wi-Fi router to access the Internet by using the built-in Wi-Fi BLE BCM43438 chip.

  • IoT SDK 0.9 ...

(more)

27
views
no
votes
2
answers
Last activity 2017-04-18 11:07:01 +0200 by Bjørn Spockeli flag of Norway

How to fix MQTT PUBACK EVENT not present ?

Hi, I have been modifying the MQTT Publish example for a product and found that the PUBACK message does not produce an event. The problem is in components/iot/mqtt/mqtt_transport.c. There is no handler for this event, it ... (more)

611
views
1
vote
1
answer
Last activity 2017-04-13 13:47:50 +0200 by Jim

MQTT Reset ?

In the release notes for the IOT SDK (which as the MQTT examples) it says: "Once BLE link is disconnected, lwIP example applications no longer get a global prefix. The only way to start using the examples with the global ... (more)

297
views
3
votes
1
answer
Last activity 2017-04-10 16:30:55 +0200 by Petter Myhre flag of Norway

nRF52840, MQTT, TLS1.2

Dear Nordic,

What I want to do:

  • Battery powered sensor network
  • One gateway (BLE --> WLAN) with a serial-to-wifi chip connected to nRF52
  • MQTT (IBM Bluemix --> CoAP is not supported)
  • TLS1.2 (IBM Bluemix)
  • Long range (Bluetooth 5), indoor and outdoor ...
(more)

44
views
no
votes
no
answers
Last activity 2017-04-08 01:41:53 +0200 by TY

mqtt subscripe multiple topics

Hi guys,

In the iot sdk in mqtt.h there are typdefs for "mqtt_topic_t " and "mqtt_subscription_list_t". I'm trying to set several topics (5) and subscribe to them.

Meaning I wanna call the mqtt_subscribe() funtion with the subscription_list.list_count set ... (more)

334
views
2
votes
1
answer
Last activity 2017-03-23 19:37:53 +0200 by xeem

MQTT-SN Client For Thread SDK (UDP to TCP Bridge)

The Thread SDK is pretty awesome! :) However, It does has a bit of a learning curve for me because it only uses UDP instead of TCP.

While searching I found an MQTT variant that uses UDP called MQTT-SN. For some ... (more)

96
views
no
votes
no
answers
Last activity 2017-02-01 17:19:40 +0200 by saad

Problem running MQTT with TLS on nRF52

Hello,

We are using Nordic SDK 11 MQTT adapted for TCP/IPv4(separate module) . It works fine without TLS. I added the flag "MQTT_TRANSPORT_SECURE" and made adaptations to the tls functions in mqtt_transport.c. I then went step-by-step through the ... (more)

176
views
2
votes
1
answer
Last activity 2017-01-31 09:44:31 +0200 by Bjørn Spockeli flag of Norway

MQTT subscriber keepalive timeouts

I'm using an nrf52dk (pca10040) to develop an mqtt subscriber application.

I'm using the IoT softdevice, with the IoT 0.9.0 sdk example for subscriber as a starting point, with armgcc and eclipse.

Raspberry pi 1b+ running ... (more)

37
views
no
votes
1
answer
Last activity 2017-01-17 13:58:23 +0200 by Jawad

Issue in publishing and receiving more than one character using MQTT

Hello everyone,

I have been using nrf52 IoT SDK for MQTT implementation. Everything works fine as long as I am publishing or receiving only one character i.e.

param.message.payload.bin_strlen = 1;

inside app_mqtt_publish. When I try to change ... (more)

176
views
1
vote
1
answer
Last activity 2017-01-12 09:02:18 +0200 by Bjørn Spockeli flag of Norway

MQTT stops responding after fixed number of subscribe and publish

Hi everyone,

I was having RAM overflowed with stack issues which were resolved using suggestions here. Now I am facing another issue. While running mqtt I can only do a fixed number (15) of mqtt publish or subscribe requests and ... (more)

199
views
no
votes
1
answer
Last activity 2017-01-04 11:09:25 +0200 by Bjørn Spockeli flag of Norway

Printing Stack and Heap pointers

Hi everyone,

I am facing memory leak issues while using nrf52 iot SDK for MQTT. The application has a high RAM usage and I am running into memory leakage issue where program starts behaving abnormally after running for few times ... (more)

178
views
1
vote
1
answer
Last activity 2016-12-22 16:12:34 +0200 by Jawad

"region RAM overflowed with stack" error while using TLS

Hello everyone,

I am using nrf52832 with SDK version 11.0 for an IoT application. I am communicating with Atmel ATWINC 1500 module through SPI in order to connect to Wifi. First I faced memory issues using SPI which were ... (more)

151
views
no
votes
2
answers
Last activity 2016-10-24 14:55:32 +0200 by MANGO

Problem of running MQTT subscriber example

Hi, I am running the mqtt subscriber example provided in IoT SDK (nrf5_iot_sdk_3288530). I am using raspberry pi as router, and following the infocenter tutorial. I have completed the first 7 steps, and have verified the nrf52 board is connected ... (more)

294
views
no
votes
no
answers
Last activity 2016-09-26 18:52:39 +0200 by uly

How to implement the mqtt client (IoT SDK) with IPv4 instead of lwip. [closed]

I am implementing mqtt client on Nrf52832 with the example provided in the IoT SDK. I am looking for the correct way to make the client to run with Non-Nordic socket stack. The details of my problem is in the ... (more)

304
views
3
votes
1
answer
Last activity 2016-09-22 14:27:54 +0200 by Bjørn Spockeli flag of Norway

Implement mqtt client with TLS 1.2

Hi all,

Hi I am implementing MQTT client on the Nrf52 MCU, as to the MQTT broker, I am going to use the amazon AWS IoT, where the broker adopts the TLS 1.2.

I read through the nordic infocenter ... (more)

287
views
1
vote
1
answer
Last activity 2016-08-22 15:30:38 +0200 by Petter Myhre flag of Norway

MQTT subscriber example doesn't work

I tried MQTT subscriber example code, it compiles and loads successfully but it doesn't show the LED lights accordingly as I press the buttons, meaning that MQTT state is still in the idle mode. (at least I think so ... (more)

708
views
5
votes
1
answer
Last activity 2016-08-10 16:24:36 +0200 by MANGO

MQTT Example - About Broker's IP

Hi, I use the following.

  • Raspberry Pi 3 (RPi3 with Raspbian Jessie 4.4) as a router,

RPi3 is connected to a Wi-Fi router to access the Internet by using the built-in Wi-Fi BLE BCM43438 chip.

  • IoT SDK 0.9 ...

(more)

166
views
1
vote
no
answers
Last activity 2016-08-09 08:55:08 +0200 by kien

How to use nRF BLE joiner application

I wanted to use MQTT example with nrf52 DK board.

and I uploaded MQTT firmware which is located MQTT example folder in iot SDK.

https://www.youtube.com/watch?v=li1oX...

I tried to follow this video but I can ... (more)

189
views
3
votes
1
answer
Last activity 2016-07-27 17:11:50 +0200 by Stian flag of Norway

MQTT - Cannot connect to broker when using username and PW

Hi, I use the following.

  • Raspberry Pi 3 (RPi3 with Raspbian Jessie 4.4) as a router,

RPi3 is connected to a Wi-Fi router to access the Internet by using the built-in Wi-Fi BLE BCM43438 chip.

  • IoT SDK 0.9 ...

(more)

1k
views
7
votes
1
answer
Last activity 2016-07-08 04:33:50 +0200 by MANGO

IoT SDK RPi3 - Using Jessie with bluetooth_6lowpan

Hi, I'm planning a project that uses MQTT with Raspberry Pi (RPi) 3 and PCA10040 (nRF52-DK).

I'm planning to use the AWS (Amazon Web Service) EC2 as a MQTT broker.

It's my first time working a project ... (more)

324
views
6
votes
1
answer
Last activity 2016-04-08 07:07:57 +0200 by toashwin

How to setup MQTT for AWS?

I follow the instruction and I am able to connect to Xively MQTT service. But I am confusing how to connect to AWS IoT MQTT.

AWS claim it support IPV6 as well.

Is there any suggestion where I should start?

Thanks,

1k
views
6
votes
1
answer
Last activity 2016-03-11 15:26:14 +0200 by Krishna Shingala

Mqtt subscriber error

I am experiencing an error that I can't figure it out why it is happening and where to go and try to fix it.

I am using the subscriber implementation on my nRF51, Raspberry Pi as router and broker ... (more)

349
views
4
votes
1
answer
Last activity 2015-11-10 12:28:38 +0200 by Petter Myhre flag of Norway

MQTT Subscriber support Multiple subscriber?

[Dev Env]

nRF51 DK

IoT SDK 0.8

IoT SoftDevice

MQTT Subscriber Example

[Question]

  1. i tested multi subscriber, but error returned. IoT SDK not Support multi subscriber?

    then received data contain all setting value?

    i try to subscriber multiple

     1 ...
(more)

614
views
1
vote
1
answer
Last activity 2015-11-09 13:19:45 +0200 by Petter Myhre flag of Norway

Can I execute both coap-server and mqtt-subscriber on one nRF-51 DK?

[Dev Env]

nRF51 DK

IoT SDK 0.8

IoT SoftDevice

[Question]

i tested coap-server example. it works well. i will test mqtt-subscriber example.

my question is coap-server and mqtt-subscriber can execute one nRF-51 DK.

any one answer me.

967
views
no
votes
1
answer
Last activity 2015-02-03 16:29:37 +0200 by Asbjørn flag of Norway

How to setup MQTT for CloudMQTT?

How to setup MQTT for CloudMQTT? I have working raspberry PI I can ping and connect to device when follow the user guide. Now I like to try MQTT example but don´t know how to do?

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