ace679f13b
* Add support for building a package without its default features to `xtask` * Do not require `embedded_hal_02` traits in examples where they are not required * Do not require `embedded_hal_02` traits for filling a buffer with random bytes
41 lines
1019 B
Rust
41 lines
1019 B
Rust
//! This shows how to write text to UART0.
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//!
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//! You can see the output with `espflash` if you provide the `--monitor`
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//! option.
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//!
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//! Depending on the chip, you will need to ensure that you are connected to
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//! the UART USB port, and not the USB-SERIAL-JTAG port. If you want to test
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//! printing over USB-SERIAL-JTAG, try the usb_serial_jtag example instead.
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//% CHIPS: esp32 esp32c2 esp32c3 esp32c6 esp32h2 esp32s2 esp32s3
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#![no_std]
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#![no_main]
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use core::fmt::Write;
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use esp_backtrace as _;
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use esp_hal::{
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clock::ClockControl,
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delay::Delay,
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peripherals::Peripherals,
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prelude::*,
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uart::Uart,
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};
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#[entry]
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fn main() -> ! {
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let peripherals = Peripherals::take();
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let system = peripherals.SYSTEM.split();
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let clocks = ClockControl::boot_defaults(system.clock_control).freeze();
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let delay = Delay::new(&clocks);
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let mut uart0 = Uart::new(peripherals.UART0, &clocks);
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loop {
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writeln!(uart0, "Hello world!").unwrap();
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delay.delay(1.secs());
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}
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}
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