can: correct decoding of CRC-21

[libsigrokdecode.git] / decoders / can / __init__.py

##
## This file is part of the libsigrokdecode project.
##
## Copyright (C) 2012 Uwe Hermann <uwe@hermann-uwe.de>
##
## This program is free software; you can redistribute it and/or modify
## it under the terms of the GNU General Public License as published by
## the Free Software Foundation; either version 2 of the License, or
## (at your option) any later version.
##
## This program is distributed in the hope that it will be useful,
## but WITHOUT ANY WARRANTY; without even the implied warranty of
## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
## GNU General Public License for more details.
##
## You should have received a copy of the GNU General Public License
## along with this program; if not, see <http://www.gnu.org/licenses/>.
##

'''
CAN (Controller Area Network) is a field bus protocol for distributed
real-time control.

This decoder assumes that a single CAN_RX line is sampled (e.g. on
the digital output side of a CAN transceiver IC such as the Microchip
MCP-2515DM-BM).
'''

from .pd import Decoder