* hi, is there some way to access a register with u8 size raw pointer?
I enconter a problem that QUADSPI always trigger a transfering when I modify some field of QUADSPI\_CCR
I guess `stm32-rs` write entire register even I didn't modify `INSTRUCTION` field, thus tigger the transfering.
Then I try access the register with raw pointer (hoping not write `INSTRUCTION` field)

```rust
#[allow(non_snake_case)]
let CCR_Plus_One_addr = (qspi.ccr.as_ptr() as usize + 1) as *mut u8;
unsafe { *CCR_Plus_One_addr = 1u8 };
```

but the program just jump to `HardFault` handle.