esp32c2-hal 0.7.0

HAL for ESP32-C2 microcontrollers
Documentation 
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//! Demonstrates the use of the hardware Random Number Generator (RNG)

#![no_std]
#![no_main]

use esp32c2_hal::{
    clock::ClockControl,
    peripherals::Peripherals,
    prelude::*,
    timer::TimerGroup,
    Rng,
    Rtc,
};
use esp_backtrace as _;
use esp_println::println;

#[entry]
fn main() -> ! {
    let peripherals = Peripherals::take();
    let mut system = peripherals.SYSTEM.split();
    let clocks = ClockControl::boot_defaults(system.clock_control).freeze();

    let mut rtc = Rtc::new(peripherals.RTC_CNTL);
    let timer_group0 = TimerGroup::new(
        peripherals.TIMG0,
        &clocks,
        &mut system.peripheral_clock_control,
    );
    let mut wdt0 = timer_group0.wdt;

    // Disable watchdog timers:
    rtc.swd.disable();
    rtc.rwdt.disable();
    wdt0.disable();

    // Instantiate the Random Number Generator peripheral:
    let mut rng = Rng::new(peripherals.RNG);

    // Generate a random word (u32):
    println!("Random u32:   {}", rng.random());

    // Fill a buffer with random bytes:
    let mut buf = [0u8; 16];
    rng.read(&mut buf).unwrap();
    println!("Random bytes: {:?}", buf);

    loop {}
}