Module stm32l4xx_hal::flash

Expand description

Flash memory module

Example usage of flash programming interface:

fn program_region(mut flash: flash::Parts) -> Result<(), flash::Error> {
    // Unlock the flashing module
    let mut prog = flash.keyr.unlock_flash(&mut flash.sr, &mut flash.cr)?;

    let page = flash::FlashPage(5);

    // Perform the erase and programing operation
    prog.erase_page(page)?;
    let data = [
        0x1111_1112_1113_1114,
        0x2221_2222_2223_2224,
        0x3331_3332_3333_3334,
    ];
    prog.write_native(page.to_address(), &data)?;

    // Check result (not needed, but done for this example)
    let addr = page.to_address() as *const u64;
    assert!(unsafe { core::ptr::read(addr) } == data[0]);
    assert!(unsafe { core::ptr::read(addr.offset(1)) } == data[1]);
    assert!(unsafe { core::ptr::read(addr.offset(2)) } == data[2]);

    Ok(())
}