profirust 0.6.0

PROFIBUS-DP compatible communication stack in pure Rust
Documentation 
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use profirust::dp;
use profirust::fdl;
use profirust::phy;

// Bus Parameters
const MASTER_ADDRESS: u8 = 3;
const BUS_DEVICE: &'static str = "/dev/ttyUSB0";
const BAUDRATE: profirust::Baudrate = profirust::Baudrate::B500000;

fn main() -> ! {
    env_logger::Builder::from_env(env_logger::Env::default().default_filter_or("info"))
        .format_timestamp_micros()
        .init();

    log::info!("PROFIBUS DP Bus-Scanner:");

    let mut dp_scanner = dp::scan::DpScanner::new();

    let mut fdl = fdl::FdlActiveStation::new(
        fdl::ParametersBuilder::new(MASTER_ADDRESS, BAUDRATE)
            // We use a rather large T_slot time because USB-RS485 converters
            // can induce large delays at times.
            .slot_bits(4000)
            .max_retry_limit(3)
            // For generating the live-list as fast as possible, set GAP factor to 1.
            .gap_wait_rotations(1)
            .build(),
    );
    // Read more about timing considerations in the SerialPortPhy documentation.
    let sleep_time = std::time::Duration::from_micros(3500);

    log::warn!(
        "This station has address #{}.  No other station with this address shall be present.",
        fdl.parameters().address
    );

    log::info!("Connecting to the bus...");
    let mut phy = phy::SerialPortPhy::new(BUS_DEVICE, fdl.parameters().baudrate);

    fdl.set_online();
    loop {
        fdl.poll(profirust::time::Instant::now(), &mut phy, &mut dp_scanner);

        match dp_scanner.take_last_event() {
            Some(dp::scan::DpScanEvent::PeripheralFound(desc)) => {
                log::info!("Discovered peripheral #{}:", desc.address);
                log::info!("  - Ident: 0x{:04x}", desc.ident);
                log::info!("  - Master: {:?}", desc.master_address);
            }
            Some(dp::scan::DpScanEvent::PeripheralLost(address)) => {
                log::info!("Lost peripheral #{}.", address);
            }
            _ => (),
        }

        std::thread::sleep(sleep_time);
    }
}