r200_uhf — R200 UHF serial protocol (Rust)

Overview

• A small Rust library to talk with R200 UHF RFID reader modules over a serial port.
• Exposes a simple Connector API to query device info, read tags, and manage radio settings.

Getting started

Requirements

• Rust toolchain (stable)
• Access to a serial port where the R200 UHF reader is connected

Add dependency:

[dependencies]
r200_uhf = "0.3"
serialport = "4.8"

Run the example (quick start)

This repo includes an example that opens a serial port, configures power, and continuously reads tags.

• Linux/macOS example: cargo run --example std_pc_serial -- /dev/ttyUSB0 115200

• Windows example (port name may vary): cargo run --example std_pc_serial -- COM3 115200

Notes

• The baud argument is optional and defaults to 115200 when omitted.
• The example prints module info, current working area/channel, transmission power, and then logs any detected tags.

Minimal usage example (library)

use r200_uhf::Connector;
use std::time::Duration;
use serialport;

fn main() -> Result<(), Box<dyn std::error::Error>> {
    // Open the serial port to the R200 module
    let port = serialport::new("/dev/ttyUSB0", 115200)
        .timeout(Duration::from_millis(500))
        .open()?;

    // Create the Connector
    let mut conn = Connector::new(port);

    // Query some information
    let _info = conn.get_module_info()?;

    // Read tags once
    let tags = conn.single_polling_instruction()?;
    for t in tags {
        println!("{}", t); // Rfid implements Display
        // Access UID as hex string: t.uid()
    }

    Ok(())
}

Legal and safety note

• Transmission power and permitted frequencies vary by country/region. Ensure compliance with your local regulations. The example sets or checks transmission power; adjust it responsibly.

License

• MIT License. See LICENSE for details.