microSCPI

A lightweight, zero-allocation async SCPI command interpreter for Rust, optimized for embedded systems.

📋 Overview

microSCPI provides a simple yet powerful interface for creating an asynchronous SCPI (Standard Commands for Programmable Instruments) command interpreter. It's specifically designed for embedded devices where resource constraints are a primary concern. The library enables developers to easily implement SCPI communication protocols with minimal overhead.

✨ Key Features

• Zero Heap Allocations: Operates without dynamic memory allocation, perfect for memory-constrained embedded systems
• Compile-Time Command Tree: Efficient command processing with command definitions resolved at compile time
• Async Command Handling: Full support for asynchronous command handlers, enabling non-blocking operations
• Type-Safe Responses: Return values are automatically formatted according to their type
• Minimal Dependencies: Keeps your project's dependency tree lean and build times fast
• Robust Error Handling: Comprehensive error reporting and recovery mechanisms

🚀 Getting Started

Installation

Add microSCPI to your project by including it in your Cargo.toml:

[dependencies]
microscpi = "0.4.0"

If you need async functionality, make sure to include an async runtime like tokio:

[dependencies]
tokio = { version = "1", features = ["full"] }

Basic Example

Here's a minimal example demonstrating how to use microSCPI to create an SCPI command interface:

use microscpi::Interface;

pub struct BasicInterface {}

impl microscpi::ErrorHandler for BasicInterface {
    fn handle_error(&mut self, error: microscpi::Error) {
        println!("Error: {error}");
    }
}

#[microscpi::interface]
impl BasicInterface {
    #[scpi(cmd = "MATH:MULTiply?")]
    async fn system_value(&mut self, a: f64, b: f64) -> Result<f64, microscpi::Error> {
        Ok(a * b)
    }
}

#[tokio::main]
pub async fn main() {
    let mut output = Vec::new();
    let mut interface = BasicInterface {};

    interface.run(b"MATH:MULT? 23, 42\n", &mut output).await;

    assert_eq!(output, b"966\n");
}

📖 Documentation

For comprehensive documentation, visit docs.rs/microscpi.

🔧 Project Structure

microSCPI is organized as a workspace with the following components:

• microscpi: The core library implementation
• microscpi-macros: Procedural macros for the #[microscpi::interface] and #[scpi] attributes

👥 Contributing

Contributions are welcome! Feel free to submit issues or pull requests on the GitHub repository.

📄 License

This project is licensed under the MIT License.