//! Template project for Rust on ESP32-C3 (`no_std`) based on [`esp-hal`](https://github.com/esp-rs/esp-hal)
//!
//! Useful resources:
//! - [The Rust on ESP Book](https://docs.esp-rs.org/book/)
//! - [Embedded Rust (no_std) on Espressif](https://docs.esp-rs.org/no_std-training/)
//! - [Matrix channel](https://matrix.to/#/#esp-rs:matrix.org)
#![no_std]
#![no_main]

use esp32c3_hal::{
    clock::ClockControl,
    delay::Delay,
    peripherals::Peripherals,
    prelude::*,
    rmt::Rmt,
    IO,
};
use esp_backtrace as _;
use esp_hal_smartled::{SmartLedsAdapter, smartleds::SmartLedsWrite};
use smart_leds::{brightness, RGB8};

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

    let io = IO::new(peripherals.GPIO, peripherals.IO_MUX);
    let delay = Delay::new(&clocks);

    let pin = io.pins.gpio2.into_push_pull_output();
    let rmt = Rmt::new(peripherals.RMT, &clocks).unwrap();
    let rmt_channel = rmt.channel0.configure(pin);

    let mut led = SmartLedsAdapter::new(rmt_channel);

    let colors = [
        RGB8::new(255, 0, 0),
        RGB8::new(0, 255, 0),
        RGB8::new(0, 0, 255),
    ];

    loop {
        for color in colors {
            let mut data = [color];
            let iter = data.iter().copied();
            led.write(brightness(iter, 64)).unwrap();
            delay.delay_ms(500);
        }
    }
}