#!/usr/bin/env python

"""

Replays CAN traffic saved with can.logger back

to a CAN bus.

Similar to canplayer in the can-utils package.

"""

from __future__ import print_function

import argparse

import datetime

import can

from can.io.player import LogReader, MessageSync

def main():

parser = argparse.ArgumentParser(description="Replay CAN traffic")

parser.add_argument("-f", "--file_name", dest="log_file",

help="""Path and base log filename, extension can be .txt, .asc, .csv, .db, .npz""",

default=None)

parser.add_argument("-v", action="count", dest="verbosity",

help='''Also print can frames to stdout.

You can add several of these to enable debugging''', default=2)

parser.add_argument('-c', '--channel',

help='''Most backend interfaces require some sort of channel.

For example with the serial interface the channel might be a rfcomm device: "/dev/rfcomm0"

With the socketcan interfaces valid channel examples include: "can0", "vcan0"''')

parser.add_argument('-i', '--interface', dest="interface",

help='''Specify the backend CAN interface to use. If left blank,

fall back to reading from configuration files.''',

choices=can.VALID_INTERFACES)

parser.add_argument('-b', '--bitrate', type=int,

help='''Bitrate to use for the CAN bus.''')

parser.add_argument('--ignore-timestamps', dest='timestamps',

help='''Ignore timestamps (send all frames immediately with minimum gap between

frames)''', action='store_false')

parser.add_argument('-g', '--gap', type=float, help='''<s> minimum time between replayed frames''')

parser.add_argument('-s', '--skip', type=float, default=60*60*24,

help='''<s> skip gaps greater than 's' seconds''')

parser.add_argument('infile', metavar='input-file', type=str,

help='The file to replay. Supported types: .db, .blf')

results = parser.parse_args()

verbosity = results.verbosity

gap = 0.0001 if results.gap is None else results.gap

logging_level_name = ['critical', 'error', 'warning', 'info', 'debug', 'subdebug'][min(5, verbosity)]

can.set_logging_level(logging_level_name)

config = {"single_handle": True}

if results.interface:

config["bustype"] = results.interface

if results.bitrate:

config["bitrate"] = results.bitrate

bus = can.interface.Bus(results.channel, **config)

player = LogReader(results.infile)

in_sync = MessageSync(player, timestamps=results.timestamps,

gap=gap, skip=results.skip)

print('Can LogReader (Started on {})'.format(

datetime.datetime.now()))

try:

for m in in_sync:

if verbosity >= 3:

print(m)

bus.send(m)

except KeyboardInterrupt:

pass

finally:

bus.shutdown()

if __name__ == "__main__":

main()