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#[cfg(feature = "std")]
extern crate std;
use core::fmt;
use embedded_hal::blocking::i2c;
#[derive(Clone, Debug, PartialEq)]
pub enum LibraryError {
InvalidData(&'static str),
Other(&'static str),
Checksum(u16),
}
impl fmt::Display for LibraryError {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
match self {
LibraryError::InvalidData(msg) => write!(f, "{}", msg),
LibraryError::Other(msg) => write!(f, "{}", msg),
LibraryError::Checksum(invalid_word) => {
write!(f, "Invalid checksum for data {:#06X}", invalid_word)
}
}
}
}
#[cfg(feature = "std")]
impl std::error::Error for LibraryError {}
pub enum Error<I2C>
where
I2C: i2c::WriteRead + i2c::Write,
{
I2cWriteReadError(<I2C as i2c::WriteRead>::Error),
I2cWriteError(<I2C as i2c::Write>::Error),
LibraryError(LibraryError),
}
impl<I2C> fmt::Debug for Error<I2C>
where
I2C: i2c::WriteRead + i2c::Write,
<I2C as i2c::WriteRead>::Error: fmt::Debug,
<I2C as i2c::Write>::Error: fmt::Debug,
{
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
match self {
Error::I2cWriteReadError(i2c_error) => f
.debug_tuple("Error::I2cWriteReadError")
.field(i2c_error)
.finish(),
Error::I2cWriteError(i2c_error) => f
.debug_tuple("Error::I2cWriteError")
.field(i2c_error)
.finish(),
Error::LibraryError(err) => f.debug_tuple("Error::LibraryError").field(err).finish(),
}
}
}
impl<I2C> fmt::Display for Error<I2C>
where
I2C: i2c::WriteRead + i2c::Write,
<I2C as i2c::WriteRead>::Error: fmt::Debug,
<I2C as i2c::Write>::Error: fmt::Debug,
{
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
match self {
Error::I2cWriteReadError(i2c_error) => write!(f, "I2C Error: {:?}", i2c_error),
Error::I2cWriteError(i2c_error) => write!(f, "I2C Error: {:?}", i2c_error),
Error::LibraryError(err) => write!(f, "Library Error: {:?}", err),
}
}
}
#[cfg(feature = "std")]
impl<I2C> std::error::Error for Error<I2C>
where
I2C: i2c::WriteRead + i2c::Write,
<I2C as i2c::WriteRead>::Error: std::error::Error + 'static,
<I2C as i2c::Write>::Error: std::error::Error + 'static,
{
fn source(&self) -> Option<&(dyn std::error::Error + 'static)> {
match self {
Error::I2cWriteReadError(err) => Some(err),
Error::I2cWriteError(err) => Some(err),
Error::LibraryError(lib_err) => Some(lib_err),
}
}
}
impl<I2C> From<LibraryError> for Error<I2C>
where
I2C: i2c::WriteRead + i2c::Write,
{
fn from(lib_err: LibraryError) -> Self {
Self::LibraryError(lib_err)
}
}