sdmmc-core 0.5.0

SD/MMC core data structures and algorithms
Documentation 
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use crate::result::Result;

use super::{ExtCsd, ExtCsdIndex};

mod structure;

pub use structure::*;

impl ExtCsd {
    /// Gets the `CSD_STRUCTURE` field of the [ExtCsd] register.
    pub const fn csd_structure(&self) -> Result<CsdStructure> {
        CsdStructure::try_from_inner(self.0[ExtCsdIndex::CsdStructure.into_inner()])
    }

    /// Sets the `CSD_STRUCTURE` field of the [ExtCsd] register.
    pub(crate) fn set_csd_structure(&mut self, val: CsdStructure) {
        self.0[ExtCsdIndex::CsdStructure.into_inner()] = val.into_inner();
    }
}

#[cfg(test)]
mod tests {
    use super::*;

    #[test]
    fn test_ext_csd_rev() {
        let mut ext_csd = ExtCsd::new();

        assert_eq!(ext_csd.csd_structure(), Ok(CsdStructure::new()));

        (0..=u8::MAX).for_each(|raw_ext| {
            // set a potentially invalid CsdStructure
            ext_csd.0[ExtCsdIndex::CsdStructure.into_inner()] = raw_ext;

            match CsdStructure::try_from_inner(raw_ext) {
                Ok(ext) => assert_eq!(ext_csd.csd_structure(), Ok(ext)),
                Err(err) => assert_eq!(ext_csd.csd_structure(), Err(err)),
            }
        });
    }
}