elf2uf2-rs 2.2.0

Port of elf2uf2 to rust
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#![allow(dead_code)]

use static_assertions::const_assert;
use std::mem;
use zerocopy::{FromBytes, Immutable, IntoBytes};

pub const UF2_MAGIC_START0: u32 = 0x0A324655;
pub const UF2_MAGIC_START1: u32 = 0x9E5D5157;
pub const UF2_MAGIC_END: u32 = 0x0AB16F30;

pub const UF2_FLAG_NOT_MAIN_FLASH: u32 = 0x00000001;
pub const UF2_FLAG_FILE_CONTAINER: u32 = 0x00001000;
pub const UF2_FLAG_FAMILY_ID_PRESENT: u32 = 0x00002000;
pub const UF2_FLAG_MD5_PRESENT: u32 = 0x00004000;

pub const RP2040_FAMILY_ID: u32 = 0xe48bff56;

#[repr(C, packed)]
#[derive(IntoBytes, FromBytes, Immutable)]
pub struct Uf2BlockHeader {
    pub magic_start0: u32,
    pub magic_start1: u32,
    pub flags: u32,
    pub target_addr: u32,
    pub payload_size: u32,
    pub block_no: u32,
    pub num_blocks: u32,
    pub file_size: u32, // or familyID
}

pub type Uf2BlockData = [u8; 476];

#[repr(C, packed)]
#[derive(IntoBytes, FromBytes, Immutable)]
pub struct Uf2BlockFooter {
    pub magic_end: u32,
}

const_assert!(mem::size_of::<Uf2BlockHeader>() == 32);
const_assert!(mem::size_of::<Uf2BlockFooter>() == 4);
const_assert!(
    mem::size_of::<Uf2BlockHeader>()
        + mem::size_of::<Uf2BlockData>()
        + mem::size_of::<Uf2BlockFooter>()
        == 512
);