You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: fmc.rs
    path of file: ./repos/embassy/embassy-stm32/src
    
    the code of the file until where you have to start completion: //! Flexible Memory Controller (FMC) / Flexible Static Memory Controller (FSMC)
use core::marker::Phan
    
    pub fn memory_controller_enable(&mut self) {
        // fmc v1 and v2 does not have the fmcen bit
        // fsmc v1, v2 and v3 does not have the fmcen bit
        // This is a "not" because it is expected that all future versions have this bit
        #[cfg(not(any(fmc_v1x3, fmc_v2x1, fsmc_v1x0, fsmc_v1x3, fsmc_v2x3, fsmc_v3x1, fmc_v4)))]
        T::REGS.bcr1().modify(|r| r.set_fmcen(true));
        #[cfg(any(fmc_v4))]
        T::REGS.nor_psram().bcr1().modify(|r| r.set_fmcen(true));
    }