Joseph Ogbonna
DIIDevHeads IoT Integration Server
•Created by Daniel kalu on 7/8/2024 in #edge-networking
How can I fix the CONNECTION_REFUSED error in my STM32 Nucleo H743ZI2 MQTT setup?
To resolve the CONNECTION_REFUSED error and establish MQTT communication:
- Verify MQTT broker settings
- Check network connectivity
- Configure MQTT client correctly
- Enable debugging for tracing
- Update LWIP library if necessary
If issues persist, consider firewall/router configurations, broker settings, or network congestion.
Also make sure that the Ethernet port and cable are well appropriately put in place.
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