Module esp_ward::connectivity::mqtt

this module was written based on a basis of an analysis of an existing project from an esp-rs team member Juraj Sadel, that was shown at Espressif DevCon 2023. Available on: https://github.com/JurajSadel/esp32c3-no-std-async-mqtt-demo

Macros

• create_stack
  Macro to create a network stack for WiFi communication.
• get_ip
  Macro to retrieve the IP configuration from the network stack.
• prepare_buffers
  Macro to prepare buffers with fixed sizes for MQTT communication.
• wait_wifi
  Macro to wait until WiFi is connected in async variation Typically used after net_task async task call.

Constants

• HIVE_MQ_IP
  Represents the IP address for the HiveMQ MQTT broker.
• HIVE_MQ_PORT
  Represents the port number for the HiveMQ MQTT broker.

Functions

• mqtt_connect_custom
  Establishes a custom MQTT connection with the specified parameters.
• mqtt_connect_default
  Establishes a default MQTT connection with predefined settings: HiveMQ broker
• mqtt_receive
  Waits for and receives a message from the subscribed MQTT topics. It handles reconnection in case of network errors.
• mqtt_send
  This function attempts to send the message to a specific MQTT topic and retries in case of network errors.
• mqtt_subscribe
  Subscribes to an MQTT topic.