pub enum NoAcknowledgeSource {
    /// The device did not acknowledge its address.
    /// The device may be missing.
    Address,
    /// The device did not acknowledge the data.
    /// It may not be ready to process
    /// requests at the moment.
    Data,
    /// Either the device did not acknowledge its
    /// address or the data, but it is
    /// unknown which.
    Unknown,
}
