//! @file main.rs
//! @brief Blink demonstration: toggle onboard LED every 500 ms
//! @author Kevin Thomas
//! @date 2025
//!
//! MIT License
//!
//! Copyright (c) 2025 Kevin Thomas
//!
//! Permission is hereby granted, free of charge, to any person obtaining a copy
//! of this software and associated documentation files (the "Software"), to deal
//! in the Software without restriction, including without limitation the rights
//! to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
//! copies of the Software, and to permit persons to whom the Software is
//! furnished to do so, subject to the following conditions:
//!
//! The above copyright notice and this permission notice shall be included in
//! all copies or substantial portions of the Software.
//!
//! THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
//! IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
//! FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
//! AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
//! LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
//! OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
//! SOFTWARE.
//!
//! -----------------------------------------------------------------------------
//!
//! Demonstrates GPIO output control using the blink driver (blink.rs).
//! The onboard LED on GPIO 25 is toggled every BLINK_DELAY_MS milliseconds and
//! the current state is reported over UART.
//!
//! Wiring:
//!   GPIO25 -> Onboard LED (no external wiring needed)

#![no_std]
#![no_main]

mod board;
#[allow(dead_code)]
mod blink;

use defmt_rtt as _;
#[cfg(target_arch = "riscv32")]
use panic_halt as _;
#[cfg(target_arch = "arm")]
use panic_probe as _;

use hal::entry;

#[cfg(rp2350)]
use rp235x_hal as hal;

#[cfg(rp2040)]
use rp2040_hal as hal;

#[unsafe(link_section = ".boot2")]
#[used]
#[cfg(rp2040)]
pub static BOOT2: [u8; 256] = rp2040_boot2::BOOT_LOADER_W25Q080;

#[unsafe(link_section = ".start_block")]
#[used]
#[cfg(rp2350)]
pub static IMAGE_DEF: hal::block::ImageDef = hal::block::ImageDef::secure_exe();

/// Application entry point for the LED blink demo.
///
/// Initializes the onboard LED and enters an infinite loop that
/// toggles the LED state every BLINK_DELAY_MS milliseconds.
///
/// # Returns
///
/// Does not return.
#[entry]
fn main() -> ! {
    let mut pac = hal::pac::Peripherals::take().unwrap();
    let clocks = board::init_clocks(
        pac.XOSC, pac.CLOCKS, pac.PLL_SYS, pac.PLL_USB, &mut pac.RESETS,
        &mut hal::Watchdog::new(pac.WATCHDOG),
    );
    let pins = board::init_pins(pac.IO_BANK0, pac.PADS_BANK0, pac.SIO, &mut pac.RESETS);
    let uart = board::init_uart(pac.UART0, pins.gpio0, pins.gpio1, &mut pac.RESETS, &clocks);
    let mut delay = board::init_delay(&clocks);
    let mut led = blink::BlinkDriver::init(pins.gpio25.into_push_pull_output());
    uart.write_full_blocking(b"Blink driver initialized on GPIO 25\r\n");
    loop {
        led.toggle();
        if led.get_state() {
            uart.write_full_blocking(b"LED: ON\r\n");
        } else {
            uart.write_full_blocking(b"LED: OFF\r\n");
        }
        delay.delay_ms(board::BLINK_DELAY_MS);
    }
}

#[unsafe(link_section = ".bi_entries")]
#[used]
pub static PICOTOOL_ENTRIES: [hal::binary_info::EntryAddr; 5] = [
    hal::binary_info::rp_cargo_bin_name!(),
    hal::binary_info::rp_cargo_version!(),
    hal::binary_info::rp_program_description!(c"Blink LED Demo"),
    hal::binary_info::rp_cargo_homepage_url!(),
    hal::binary_info::rp_program_build_attribute!(),
];

// End of file