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Sébastien Trocherie in MATLAB Answers
Ultima attività il 2 Maggio 2024

LWIP MQTT not connecting

Hi, I'm using the STM32F746NG discovery board to connect to the thingspeak MQTT broker. However I can't connect to the server, i'm using dns to get the server ip adres which I then use in the mqtt_client_connect function. When I get to the callback function the status is 256 (MQTT_CONNECT_DISCONNECTED). I've had this problem before with a local MQTT broker (mosquitto 2.0), I was able to solve this problem by installing an older version (mosquitto 1.161a). I'm using the correct credentials because they work in the mqtt_spy application. Has anyone had this problem before or a sollution for this problem? With kind regards Sébastien

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