Crate nros_params 

Parameter server for nros

This crate provides a ROS 2 compatible parameter server for embedded systems. Parameters live in storage the CALLER places and lends to the server (ParameterStorage / ParameterTable); MAX_PARAMETERS is only the default capacity of that storage.

Example

use nros_params::{
    ParameterDescriptor, ParameterServer, ParameterStorage, ParameterType, ParameterValue,
};

// phase-382 W2' — storage is CALLER-OWNED: place it (a `static`, a struct
// field, a local), then lend it. `ParameterStorage` defaults to
// `MAX_PARAMETERS` slots; any length works, and the server's capacity is
// whatever it is handed.
let mut storage = ParameterStorage::<8>::new();
let mut server = ParameterServer::new_in(storage.as_table());

// Declare a simple parameter
server.declare("max_speed", ParameterValue::Double(1.0));

// Declare a parameter with constraints
let desc = ParameterDescriptor::new("velocity", ParameterType::Double)
    .unwrap()
    .with_description("Maximum velocity in m/s")
    .with_float_range(0.0, 10.0, 0.1);
server.declare_with_descriptor("velocity", ParameterValue::Double(5.0), Some(desc));

// Get and set parameters
assert_eq!(server.get_double("max_speed"), Some(1.0));
server.set_double("max_speed", 2.0);

Features

• std - Enable standard library support
• alloc - Enable heap allocation

Re-exports

pub use server::LegacyParameterBuilder;

pub use server::ParameterServer;

pub use server::ParameterStorage;

pub use server::ParameterTable;

pub use typed::MandatoryParameter;

pub use typed::OptionalParameter;

pub use typed::ParameterBuilder;

pub use typed::ParameterError;

pub use typed::RangeConvertible;

pub use typed::ReadOnlyParameter;

pub use typed::UndeclaredParameters;

pub use types::FloatingPointRange;

pub use types::IntegerRange;

pub use types::MAX_ARRAY_LEN;

pub use types::MAX_BYTE_ARRAY_LEN;

pub use types::MAX_PARAM_NAME_LEN;

pub use types::MAX_PARAMETERS;

pub use types::MAX_STRING_VALUE_LEN;

pub use types::Parameter;

pub use types::ParameterDescriptor;

pub use types::ParameterRange;

pub use types::ParameterType;

pub use types::ParameterValue;

pub use types::ParameterVariant;

pub use types::SetParameterResult;

Modules

server

Parameter server implementation

typed

Typed parameter API

types

Parameter types for ROS 2 compatible parameter handling