How to add mqtt_server_host name in example iot pubish???

RE: How to add mqtt_server_host name in example iot pubish???

Guojun Wang — Wed, 17 Jun 2020 21:42:53 GMT

This ticket will be closed.

Please open a new ticket when you have more questions.

RE: How to add mqtt_server_host name in example iot pubish???

Guojun Wang — Fri, 22 May 2020 12:23:18 GMT

Sure, try to search in devzone and internet, and see if you can find any useful info, as my colleague has pointed out in the other post https://devzone.nordicsemi.com/f/nordic-q-a/61392/how-to-connect-nrf52832-board-to-w5100-lan-and-send-data-to-mqtt-server.

Good luck and hope you can make it work!

RE: How to add mqtt_server_host name in example iot pubish???

namnn07 — Fri, 22 May 2020 11:00:36 GMT

I don't know if anyone has succeeded with connecting the nrf52 board with w5100 to send data to MQTT.If it's not feasible I will change the alternative.

Thanks

RE: How to add mqtt_server_host name in example iot pubish???

namnn07 — Fri, 22 May 2020 10:28:06 GMT

I use W5100 gateway.I will try to research base your link.If have any trouble i hope recieve your support.

Thanks

RE: How to add mqtt_server_host name in example iot pubish???

Guojun Wang — Fri, 22 May 2020 10:13:40 GMT

Yes, the Nordic Bluetooth IoT library only supports IPv6.

if your gateway does not support IPv6, you can install an IPv6 and IPv4 tunneling service to transit.

There are some posts you can get more information, for example:

https://devzone.nordicsemi.com/f/nordic-q-a/15055/mqtt-example---about-broker-s-ip/57454#57454

https://devzone.nordicsemi.com/support-private/support/39065

RE: How to add mqtt_server_host name in example iot pubish???

namnn07 — Fri, 22 May 2020 09:41:32 GMT

Hi sir,

Just only the way connect MQTT use ipv6???

Thanks

RE: How to add mqtt_server_host name in example iot pubish???

Guojun Wang — Fri, 22 May 2020 09:38:54 GMT

Yes.

RE: How to add mqtt_server_host name in example iot pubish???

namnn07 — Fri, 22 May 2020 09:19:19 GMT

this mean i need config ipv6 and replace ipv6_addr_t???

Thankss

RE: How to add mqtt_server_host name in example iot pubish???

Guojun Wang — Fri, 22 May 2020 09:00:26 GMT

Hi,

You can set m_broker_addr to your mqtt server IP address. Please note that this is an IPv6 address format.

In function app_mqtt_connect(), you can see how mqtt is setup for client.

RE: How to add mqtt_server_host name in example iot pubish???

Guojun Wang — Mon, 18 May 2020 13:12:23 GMT

Sure, no problem!

RE: How to add mqtt_server_host name in example iot pubish???

namnn07 — Sun, 17 May 2020 16:20:38 GMT

Thank your support.I use example in IoT mqtt to do this and try to find host_name but i dont see in library.Now i try to connect nrf52 dev board with W5100 first.After i will find the way to send data into MQTT.I will show it for you late.

Thank you so much!

RE: How to add mqtt_server_host name in example iot pubish???

Guojun Wang — Sun, 17 May 2020 16:17:35 GMT

Hi,

Can you provide more information about the example?

Where is it and which one?

Are you running one example from the nRF Connect SDK?

Thanks!

RE: How to add mqtt_server_host name in example iot pubish???

namnn07 — Sun, 17 May 2020 14:29:30 GMT

Thanks your answer

i dont see MQTT_BROKER_HOSTNAME in confg.just see config using ipv6,port,topic to access mqtt bro...

RE: How to add mqtt_server_host name in example iot pubish???

Guojun Wang — Sun, 17 May 2020 14:25:54 GMT

Hi,

Assume you are using example mqtt_simple.

You shall set the server name to config variable CONFIG_MQTT_BROKER_HOSTNAME in prj.conf. And make sure CONFIG_MQTT_BROKER_HOSTNAME is not commented in this file.

Or you can set it to MQTT_BROKER_HOSTNAME in Kconfig.