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| #![no_std] | |
| #![no_main] | |
| use core::{fmt::Write as _, str::from_utf8}; | |
| use embedded_hal_nb::serial::{Read, Write}; | |
| use esp_backtrace as _; | |
| use esp_hal::{ | |
| clock::ClockControl, | |
| gpio, | |
| peripherals::Peripherals, | |
| prelude::*, | |
| uart::{self, Uart}, | |
| }; | |
| use esp_println::println; | |
| use nb; | |
| #[entry] | |
| fn main() -> ! { | |
| let peripherals = Peripherals::take(); | |
| let system = peripherals.SYSTEM.split(); | |
| let clocks = ClockControl::max(system.clock_control).freeze(); | |
| let io = gpio::IO::new(peripherals.GPIO, peripherals.IO_MUX); | |
| let pins = uart::TxRxPins::new_tx_rx(io.pins.gpio0, io.pins.gpio1); | |
| let mut uart = Uart::new_with_config( | |
| peripherals.UART0, | |
| uart::config::Config { | |
| baudrate: 115_200, | |
| data_bits: uart::config::DataBits::DataBits8, | |
| parity: uart::config::Parity::ParityNone, | |
| stop_bits: uart::config::StopBits::STOP1, | |
| ..Default::default() | |
| }, | |
| Some(pins), | |
| &clocks, | |
| None, | |
| ); | |
| loop { | |
| // Problem is on the next line | |
| while let Ok(byte) = nb::block!(uart.read()) { | |
| println!("{:?}", byte); | |
| writeln!(uart, "{}", from_utf8(&buf).unwrap()).unwrap(); | |
| nb::block!(uart.flush()).unwrap(); | |
| } | |
| } | |
| } |
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