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pub trait Ccu40Ext {
    fn constrain(self) -> Ccu40;
}

impl Ccu40Ext for Ccu40 {
    fn constrain(self) -> Ccu40 {
        Ccu40 {}
    }
}

pub struct Ccu40 {}

// IMPLEMENT PERIPHERAL AFTER THIS LINE

#[cfg(test)]
mod tests {

    #[test]
    fn nothing() {
        // Do nothing test
    }
}