impl NorFlash for Rp2040Flash {
    const WRITE_SIZE: usize = 1;
    const ERASE_SIZE: usize = FLASH_SECTOR_SIZE as usize;

    fn erase(&mut self, from: u32, to: u32) -> Result<(), Self::Error> {
        check_erase(self, from, to)?;

        cortex_m::interrupt::free(|_| unsafe {
            core::sync::atomic::compiler_fence(core::sync::atomic::Ordering::SeqCst);
            flash_range_erase(START_ADDRESS + from, to - from, true);
            core::sync::atomic::compiler_fence(core::sync::atomic::Ordering::SeqCst);
        });

        Ok(())
    }

    fn write(&mut self, offset: u32, bytes: &[u8]) -> Result<(), Self::Error> {
        check_write(self, offset, bytes.len())?;

        cortex_m::interrupt::free(|_| unsafe {
            core::sync::atomic::compiler_fence(core::sync::atomic::Ordering::SeqCst);
            flash_range_program(START_ADDRESS + offset, bytes, true);
            core::sync::atomic::compiler_fence(core::sync::atomic::Ordering::SeqCst);
        });

        Ok(())
    }
}