exfat-slim 0.5.0

An exFAT file system library written in safe Rust for embedded environments
Documentation 
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mod common;

use crate::common::{BLOCK_SIZE, N, blocking::InMemoryBlockDevice};
use exfat_slim::blocking::{
    file::OpenOptions,
    file_system::{ExFatResult, FileSystem},
};
use log::info;
use rand::{Rng, SeedableRng, rngs::StdRng};

fn main() -> ExFatResult<(), InMemoryBlockDevice, BLOCK_SIZE> {
    env_logger::init();
    color_backtrace::install();

    let io = InMemoryBlockDevice::new();
    let mut fs: FileSystem<_, _, N> = FileSystem::new(io);
    let path = "flipflop.txt";

    // create a new file and write "hello world" to it
    let options = OpenOptions::new().write(true).create(true).append(true);
    let mut file = fs.open(path, options)?;

    let mut dest = vec![0u8; 512];
    fill_random_ascii(&mut dest);
    let buf = dest.as_slice();

    for i in 0..2048 {
        file.write(&mut fs, buf)?;
        if i % 32 == 0 {
            info!("wrote 16KB");
        }
    }
    file.close(&mut fs)?;

    Ok(())
}

fn fill_random_ascii(buf: &mut [u8]) {
    let mut rng = StdRng::seed_from_u64(42);
    for b in buf {
        *b = rng.random_range(0x20u8..=0x7Eu8);
    }
}