mirror of
https://github.com/esp-rs/esp-idf-hal.git
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2af4695aac
* Remove Peripheral/PeripheralRef * Make ADC unit and channel structs more readable by avoiding const generics * Remove unused parameter * fix forgotten reference to the old ADCU syntax * Mention that we have removed the prelude module * try_into methods for changing the pin type
45 lines
1.1 KiB
Rust
45 lines
1.1 KiB
Rust
//! UART loopback test
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//!
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//! Folowing pins are used:
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//! TX GPIO12
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//! RX GPIO13
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//!
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//! Depending on your target and the board you are using you have to change the pins.
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//!
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//! This example transfers data via UART.
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//! Connect TX and RX pins to see the outgoing data is read as incoming data.
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use esp_idf_hal::delay::BLOCK;
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use esp_idf_hal::gpio;
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use esp_idf_hal::peripherals::Peripherals;
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use esp_idf_hal::uart::*;
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use esp_idf_hal::units::*;
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fn main() -> anyhow::Result<()> {
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esp_idf_hal::sys::link_patches();
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let peripherals = Peripherals::take()?;
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let tx = peripherals.pins.gpio12;
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let rx = peripherals.pins.gpio13;
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println!("Starting UART loopback test");
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let config = config::Config::new().baudrate(Hertz(115_200));
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let uart = UartDriver::new(
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peripherals.uart1,
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tx,
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rx,
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Option::<gpio::Gpio0>::None,
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Option::<gpio::Gpio1>::None,
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&config,
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)?;
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loop {
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uart.write(&[0xaa])?;
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let mut buf = [0_u8; 1];
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uart.read(&mut buf, BLOCK)?;
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println!("Written 0xaa, read 0x{:02x}", buf[0]);
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}
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}
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