MQTT Client

Lightweight MQTT 3.1.1 client for IoT pub/sub messaging. More...

Data Structures
struct	ove_mqtt_config_t
	MQTT connection configuration. More...

Macros
#define	OVE_MQTT_QOS0   ((ove_mqtt_qos_t)0)
#define	OVE_MQTT_QOS1   ((ove_mqtt_qos_t)1)

Typedefs
typedef uint8_t	ove_mqtt_qos_t
	MQTT QoS level.
typedef void(*	ove_mqtt_msg_cb) (const char *topic, size_t topic_len, const void *payload, size_t payload_len, void *user_data)
	MQTT message callback.

Detailed Description

Lightweight MQTT 3.1.1 client for IoT pub/sub messaging.

Supports CONNECT, PUBLISH (QoS 0/1), SUBSCRIBE, keep-alive, and optional TLS. Uses the oveRTOS socket layer for transport.

Note

Requires CONFIG_OVE_NET_MQTT (implies CONFIG_OVE_NET). When disabled every function is replaced by a no-op stub.

Macro Definition Documentation

OVE_MQTT_QOS0

#define OVE_MQTT_QOS0   ((ove_mqtt_qos_t)0)

At most once.

OVE_MQTT_QOS1

#define OVE_MQTT_QOS1   ((ove_mqtt_qos_t)1)

At least once.

Typedef Documentation

ove_mqtt_msg_cb

typedef void(* ove_mqtt_msg_cb) (const char *topic, size_t topic_len, const void *payload, size_t payload_len, void *user_data)

MQTT message callback.

Parameters

[in]	topic	Topic string (not NUL-terminated).
[in]	topic_len	Topic length in bytes.
[in]	payload	Message payload.
[in]	payload_len	Payload length in bytes.
[in]	user_data	Opaque pointer supplied at connect time.