Crate w5500_mqtt

Expand description

MQTT v5 client for the Wiznet W5500 SPI internet offload chip.

Limitations

This is very basic at the moment, and will be expanded in the future.

Does not support password protected MQTT servers.
Only supports QoS 0: At most once delivery.

Example

use w5500_mqtt::{
    ll::{
        net::{Ipv4Addr, SocketAddrV4},
        Sn,
    },
    Client, ClientId, Event, DST_PORT, SRC_PORT,
};

let mut client: Client = Client::new(
    Sn::Sn2,
    SRC_PORT,
    SocketAddrV4::new(Ipv4Addr::new(192, 168, 5, 6), DST_PORT),
);

// wait for a connection or die trying
while !matches!(client.process(&mut w5500, monotonic_secs())?, Event::None) {}

// publish to "duck" with a payload "quack"
client.publish(&mut w5500, "duck", b"quack")?;

// subscribe to "cow"
client.subscribe(&mut w5500, "cow")?;