Crate meadow

meadow is an experimental robotics-focused publish/request middleware for embedded Linux. It is built with a high preference for catching errors at compile-time over runtime and a focus on developer ergonomics, and can natively operate on any serde-compatible data type.

It uses a star-shaped network topology, with a focus on ease-of-use and transparent design and operation. It is more similar to ZeroMQ than to higher-level frameworks like ROS/2, but uses a central coordination process similar to MOOS-IvP. Meadow currently supports the following messaging patterns over different transport protocols:

Protocol	Publish	Request	Subscribe	Encryption
TCP	X	X	X
UDP	X	X	X
QUIC	X	X	X	X

Re-exports

• pub use crate::error::Error;
• pub use crate::host::Host;
• pub use crate::host::HostConfig;
• pub use crate::msg::GenericMsg;
• pub use crate::msg::Message;
• pub use crate::msg::Msg;
• pub use crate::msg::MsgType;
• pub use crate::networks::get_ip;
• pub use crate::node::tcp::await_response;
• pub use crate::node::tcp::send_msg;
• pub use crate::node::Active;
• pub use crate::node::Idle;
• pub use crate::node::NetworkConfig;
• pub use crate::node::Node;
• pub use crate::node::NodeConfig;
• pub use crate::node::Subscription;
• pub use crate::node::Tcp;
• pub use crate::node::Udp;

Modules

• error
  Error types used by Meadow
• host
  Central coordination process, which stores published data and responds to requests
• msg
  Message definitions for publish/request functions
• networks
  Network-based utility module
• node
  Objects that publish and request strongly-typed data to named topics on the Host

Traits

• Deserialize
  Re-export of Serde’s Serialize and Deserialize traits A data structure that can be deserialized from any data format supported by Serde.
• Serialize
  Re-export of Serde’s Serialize and Deserialize traits A data structure that can be serialized into any data format supported by Serde.

Derive Macros

• Deserialize
  Re-export of Serde’s Serialize and Deserialize traits
• Serialize
  Re-export of Serde’s Serialize and Deserialize traits