//! Firmware for the HackAmp.
#![no_main]
#![no_std]

use cortex_m::interrupt;
use panic_semihosting as _;

use audio_buffer::AudioBuffer;
use pins::Pins;

// Remove "pub" to check whether there is any dead code.
pub mod audio_buffer;
pub mod halext;
pub mod mixer;
pub mod pins;

#[rtic::app(device = stm32f4xx_hal::stm32, peripherals = true)]
const APP: () = {
    struct Resources {}

    #[init]
    fn init(_ctx: init::Context) {
        let _pins = Pins::configure();
        static I2S_BUFFER: AudioBuffer = AudioBuffer::new();

        let i2s_buffer = &I2S_BUFFER;

        // Buffer example code.
        interrupt::free(|cs| {
            let write_packet = i2s_buffer.borrow_write(cs).unwrap();
            // TODO
            i2s_buffer.write_finished(write_packet, cs);
            let read_packet = i2s_buffer.borrow_read(cs).unwrap();
            // TODO
            i2s_buffer.read_finished(read_packet, cs);
        });
    }

    #[idle(resources = [])]
    fn idle(_ctx: idle::Context) -> ! {
        loop {
            // TODO
        }
    }
};