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//! Enums shared between CAN controller types.
/// Bus error
#[derive(Debug)]
#[cfg_attr(feature = "defmt", derive(defmt::Format))]
pub enum BusError {
/// Bit stuffing error - more than 5 equal bits
Stuff,
/// Form error - A fixed format part of a received message has wrong format
Form,
/// The message transmitted by the FDCAN was not acknowledged by another node.
Acknowledge,
/// Bit0Error: During the transmission of a message the device wanted to send a dominant level
/// but the monitored bus value was recessive.
BitRecessive,
/// Bit1Error: During the transmission of a message the device wanted to send a recessive level
/// but the monitored bus value was dominant.
BitDominant,
/// The CRC check sum of a received message was incorrect. The CRC of an
/// incoming message does not match with the CRC calculated from the received data.
Crc,
/// A software error occured
Software,
/// The FDCAN is in Bus_Off state.
BusOff,
/// The FDCAN is in the Error_Passive state.
BusPassive,
/// At least one of error counter has reached the Error_Warning limit of 96.
BusWarning,
}
/// Bus error modes.
///
/// Contrary to the `BusError` enum which also includes last-seen acute protocol
/// errors, this enum includes only the mutually exclusive bus error modes.
#[derive(Debug)]
#[cfg_attr(feature = "defmt", derive(defmt::Format))]
pub enum BusErrorMode {
/// Error active mode (default). Controller will transmit an active error
/// frame upon protocol error.
ErrorActive,
/// Error passive mode. An error counter exceeded 127. Controller will
/// transmit a passive error frame upon protocol error.
ErrorPassive,
/// Bus off mode. The transmit error counter exceeded 255. Controller is not
/// participating in bus traffic.
BusOff,
}
/// Frame Create Errors
#[derive(Debug)]
#[cfg_attr(feature = "defmt", derive(defmt::Format))]
pub enum FrameCreateError {
/// Data in header does not match supplied.
NotEnoughData,
/// Invalid data length not 0-8 for Classic packet or valid for FD.
InvalidDataLength,
/// Invalid ID.
InvalidCanId,
}
/// Error returned by `try_read`
#[derive(Debug)]
#[cfg_attr(feature = "defmt", derive(defmt::Format))]
pub enum TryReadError {
/// Bus error
BusError(BusError),
/// Receive buffer is empty
Empty,
}
/// Internal Operation
#[derive(Debug)]
#[cfg_attr(feature = "defmt", derive(defmt::Format))]
pub enum RefCountOp {
/// Notify receiver created
NotifyReceiverCreated,
/// Notify receiver destroyed
NotifyReceiverDestroyed,
/// Notify sender created
NotifySenderCreated,
/// Notify sender destroyed
NotifySenderDestroyed,
}
/// Error returned when calculating the can timing fails
#[derive(Debug)]
#[cfg_attr(feature = "defmt", derive(defmt::Format))]
pub enum TimingCalcError {
/// Bitrate is lower than 1000
BitrateTooLow {
/// The set bitrate
bitrate: u32,
},
/// No solution possible
NoSolution {
/// The sum of BS1 and BS2
bs1_bs2_sum: u8,
},
/// Prescaler is not 1 < prescaler < 1024
InvalidPrescaler {
/// The calculated prescaler value
prescaler: u32,
},
/// BS1 or BS2 are not in the range 0 < BSx < BSx_MAX
BSNotInRange {
/// The value of BS1
bs1: u8,
/// The value of BS2
bs2: u8,
},
/// Final bitrate doesn't match the requested bitrate
NoMatch {
/// The requested bitrate
requested: u32,
/// The calculated bitrate
final_calculated: u32,
},
/// core::num::NonZeroUxx::new error
CoreNumNew,
}
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