Module esp32_hal::uart

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Expand description

§UART driver

§Overview

In embedded system applications, data is required to be transferred in a simple way with minimal system resources. This can be achieved by a Universal Asynchronous Receiver/Transmitter (UART), which flexibly exchanges data with other peripheral devices in full-duplex mode. The UART driver provides an interface to communicate with UART peripherals on ESP chips. It enables serial communication between the microcontroller and external devices using the UART protocol.

§Example

let config = Config {
    baudrate: 115200,
    data_bits: DataBits::DataBits8,
    parity: Parity::ParityNone,
    stop_bits: StopBits::STOP1,
};

let io = IO::new(peripherals.GPIO, peripherals.IO_MUX);
let pins = TxRxPins::new_tx_rx(
    io.pins.gpio1.into_push_pull_output(),
    io.pins.gpio2.into_floating_input(),
);

let mut serial1 = Uart::new_with_config(peripherals.UART1, config, Some(pins), &clocks);

timer0.start(250u64.millis());

println!("Start");
loop {
    serial1.write(0x42).ok();
    let read = block!(serial1.read());

    match read {
        Ok(read) => println!("Read 0x{:02x}", read),
        Err(err) => println!("Error {:?}", err),
    }

    block!(timer0.wait()).unwrap();
}

Modules§

Structs§

Enums§

  • Error
    Custom serial error type

Traits§