mqtt_publisher on nucleo_stm32f429zi

[GeorgePriestner-Eaton]

I'm trying to run the mqtt_publisher sample on Nucleo_STM32F429zi but getting mqtt_connect: -116 error returned.

I am attempting to connect to https://test.mosquitto.org/ (IP address 91.121.93.94) on port 1883. I changed the IP from the one given in the sample (37.187.106.16) as it's outdated.

I set the static IP of the zephyr client to 192.168.0.13.
These settings are stored in config.h

I verified the sample works OK with a mosquitto broker running on my local machine.

Has anyone had similar issues?

TIA!
George

[GeorgePriestner-Eaton]

I got it working by adding the following to my prj.conf file:
CONFIG_NET_CONFIG_SETTINGS=y
CONFIG_NET_CONFIG_MY_IPV4_ADDR="192.168.0.13"
CONFIG_NET_CONFIG_PEER_IPV4_ADDR="91.121.93.94"
CONFIG_NET_CONFIG_MY_IPV4_GW="192.168.0.1"

CONFIG_NET_CONFIG_MY_IPV4_ADDR should be set to some unused IP address on your local network
CONFIG_NET_CONFIG_PEER_IPV4_ADDR should be set to the IP address of https://test.mosquitto.org/
CONFIG_NET_CONFIG_MY_IPV4_GW should be set to your routers gateway address

Hope this helps someone in the future!