MessageInfo¶

class canlib.linlib.MessageInfo[source]¶

Provides more information about the LIN message.

The precision of the timing data given in us (microseconds) can be less than one microsecond; for low bitrates the lowest bits might always be zero.

The min and max values listed inside [] of the message timing values can be calculated from the LIN specification by using the shortest (0 bytes) or longest (8 bytes) messages at the lowest or highest allowed bitrate.

Note

The LIN interface will accept messages that are a bit out-of-bounds as well.

timestamp¶

Kvaser DRV Lin timestamp - Timestamp in milliseconds of the falling edge of the synch break of the message. Uses the canlib CAN timer.

Kvaser LIN Leaf timestamp - Timestamp in milliseconds of the falling edge of the synch break of the message. Uses the canlib CAN timer.

Note

All Kvaser Leaf with Kvaser MagiSync&tm; are synchronized (also with CAN channels).

bitrate¶: The bitrate of the message in bits per seconds. Range [1000 .. 20000] (plus some margin)

byteTime¶: Start time in microseconds of each data byte. In case of 8-byte messages, the crc time isn’t included (but can be deduced from frameLength).

Note

Not supported by all devices.

checkSum¶: The checksum as read from the LIN bus. Might not match the data in case of MessageFlag.CSUM_ERROR.

frameLength¶: The total frame length in microseconds; from the synch break to the end of the crc. [2200 .. 173600]

idPar¶: The id with parity of the message as read from the LIN bus. Might be invalid in case of MessageFlag.PARITY_ERROR.

synchBreakLength¶: Length of the synch break in microseconds. [650 .. 13000], [400 .. 8000] for a wakeup signal.

synchEdgeTime¶: Time in microseconds of the falling edges in the synch byte relative the falling edge of the start bit.

Note

Not supported by all devices.