You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: flash.rs
    path of file: ./repos/embassy/examples/stm32f7/src/bin
    
    the code of the file until where you have to start completion: #![no_std]
#![no_main]

use defmt::{info, unwrap};
use embassy_executor::Spawner;
use embassy_stm32::flash::Flash;
use embassy_time::Timer;
use {defmt_rtt as _, panic_probe as _};

#[embassy_executor::main]
async fn main(_spawner: Spawner) {
    let p = embassy_stm32::init(Default::default());
    info!("Hello Flash!");

    const ADDR: u32 = 0x8_0000; // This is the offset into the third region, the absolute address is 4x32K + 128K + 0x8_0000.

    // wait a bit before accessing the flash
    Timer::after_millis(300).await;

    let mut f = Flash::new_blocking(p.FLASH).into_blocking_regions().bank1_region3;

    info!("Reading...");
    let mut
    
async fn main(_spawner: Spawner) {
    let p = embassy_stm32::init(Default::default());
    info!("Hello Flash!");

    const ADDR: u32 = 0x8_0000; // This is the offset into the third region, the absolute address is 4x32K + 128K + 0x8_0000.

    // wait a bit before accessing the flash
    Timer::after_millis(300).await;

    let mut f = Flash::new_blocking(p.FLASH).into_blocking_regions().bank1_region3;

    info!("Reading...");
    let mut buf = [0u8; 32];
    unwrap!(f.blocking_read(ADDR, &mut buf));
    info!("Read: {=[u8]:x}", buf);

    info!("Erasing...");
    unwrap!(f.blocking_erase(ADDR, ADDR + 256 * 1024));

    info!("Reading...");
    let mut buf = [0u8; 32];
    unwrap!(f.blocking_read(ADDR, &mut buf));
    info!("Read after erase: {=[u8]:x}", buf);

    info!("Writing...");
    unwrap!(f.blocking_write(
        ADDR,
        &[
            1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29,
            30, 31, 32
        ]
    ));

    info!("Reading...");
    let mut buf = [0u8; 32];
    unwrap!(f.blocking_read(ADDR, &mut buf));
    info!("Read: {=[u8]:x}", buf);
    assert_eq!(
        &buf[..],
        &[
            1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29,
            30, 31, 32
        ]
    );
}