Crate sntpc_net_embassy 

Embassy async runtime UDP socket adapter for the sntpc SNTP client library.

This crate provides a wrapper around embassy_net::udp::UdpSocket that implements the NtpUdpSocket trait, enabling asynchronous SNTP requests in embedded systems using the Embassy async runtime.

Design Rationale

The network adapters are separated into their own crates to:

• Enable independent versioning (updating Embassy doesn’t require updating sntpc core)
• Allow version flexibility (works with embassy-net 0.8.x)
• Maintain no_std compatibility for embedded systems

Features

• ipv6: Enables IPv6 protocol support (propagates to embassy-net)
• log: Enables logging support via the log crate
• defmt: Enables logging support via the defmt crate for embedded systems

Note: The log and defmt features are mutually exclusive. If both are enabled, defmt takes priority.

Example

use sntpc::{get_time, NtpContext};
use sntpc_net_embassy::UdpSocketWrapper;
use embassy_net::udp::UdpSocket;

// Within an Embassy async context
let socket = UdpSocket::new(stack, &mut rx_buffer, &mut tx_buffer);
socket.bind(local_port).unwrap();
let socket = UdpSocketWrapper::from(socket);

let result = get_time(server_addr, &socket, ntp_context).await;
match result {
    Ok(time) => defmt::info!("Received time: {}.{}", time.sec(), time.sec_fraction()),
    Err(e) => defmt::error!("Failed to get time: {:?}", e),
}

For more examples, see the repository examples.

Structs

UdpSocketWrapper

A wrapper around embassy_net::udp::UdpSocket that implements NtpUdpSocket.