tm040040 0.3.0

An embedded-hal driver for the TM040040 Cirque Circle touchpad (and Pinnacle touchpads in general)
Documentation 
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use core::fmt::Debug;

use embedded_hal::digital;

#[derive(Debug)]
pub enum Error<E, PE> {
    /// Some error originating from the communication bus
    BusError(E),
    /// Some error resulting from interacting with the device
    SensorError(SensorError),
    PinError(PE),
}

#[derive(Debug)]
pub enum SensorError {
    /// The chip at the specified address is not reporting the correct self
    /// identification code.
    ///
    /// For I²C this is most likely if the ID change jumper is in the wrong
    /// state or there is anther chip on the bus with this address.
    BadChip,
    /// Returned if the register bank is set to a invalid value
    ///
    /// There are 4 banks, 0-3
    BankOutOfRange,
    /// Attempted to write to a read-only register
    WriteToReadOnly,
    /// Attempted to create an AccelRange or GyroRange enum from an invalid
    /// discriminant
    InvalidDiscriminant,
}

impl<E, PE> From<SensorError> for Error<E, PE> {
    fn from(err: SensorError) -> Self {
        Error::SensorError(err)
    }
}

impl<E, PE> From<PE> for Error<E, PE>
where
    PE: digital::Error + Debug,
{
    fn from(value: PE) -> Self {
        Error::PinError(value)
    }
}