#![no_main]
#![no_std]

use defmt::{debug, info};
use hal::pwr::PWR;
use hal::rtc::{Datelike, NaiveDateTime, Rtc, Timelike};
use panic_probe as _;

use defmt_rtt as _; // global logger

use cortex_m_rt::entry;
use hal::{pac, prelude::*, rcc::Config};

const AES_PT: [u8; 16] = [
    0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA,
];
const AES_KEY: [u32; 4] = [0x1991, 0x1991, 0xAAAAAAAA, 0xBBBBBBBB];

#[entry]
fn main() -> ! {
    let dp = pac::Peripherals::take().unwrap();
    let cp = cortex_m::Peripherals::take().unwrap();

    let mut rcc = dp.RCC.freeze(Config::hsi16());
    let mut delay = cp.SYST.delay(rcc.clocks);

    compile_error!("The chip does not have an AES unit >:{");
    let aes = hal::aes::AES::new(dp.AES, &mut rcc);
    let mut ecb_stream = aes.enable(<dyn hal::aes::Mode>::ecb_encrypt(), AES_KEY);
    let mut encbuf: [[u8; 16]; 4] = [[0; 16]; 4];

    let mut i = 0;
    debug!("Entering Loop");
    #[allow(clippy::never_loop)]
    loop {
        debug!("reading from aes stream");
        encbuf[i % 4] = ecb_stream.process(&AES_PT).unwrap();

        info!("encbuf[{:02}]: {:02x}", i, encbuf);

        if i > 100 {
            delay.delay_ms(200_u16);
        }
        i += 1;
    }
}