* ``` crate::pac::RCC.ckprotr().modify(|w| { w.set_xspi1swp(stm32_metapac::rcc::vals::Xspiswp::B_0X1); w.set_xspi2swp(stm32_metapac::rcc::vals::Xspiswp::B_0X1); }); ```