forked from AustinMurphy/OBD2-Scantool
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decode-trace.py
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decode-trace.py
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#!/usr/bin/env python
############################################################################
#
# decode-trace.py
#
# Copyright 2011-2012 Austin Murphy (austin.murphy@gmail.com)
#
# This file is part of OBD2 Scantool.
#
# OBD2 Scantool 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.
#
# OBD2 Scantool 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 OBD2 Scantool; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
############################################################################
#
# This is a development script to test the decoding of PIDs from a trace
#
# by "trace" I mean a log of the raw hex & ascii passed over the serial connection.
# a cut an paste of a serial session should work
import time
import sys, os
# main OBD2 object
import obd2
import obd2_reader
import pprint
# headers on(1)/off(0)
headers = 0
#headers = 1
#style = can/old
#style = 'old'
style = 'can'
# 0=off,
# 1+ - show raw & decoded records
# 2+ - show record as triaged
debug = 2
def main():
""" Decode a tracefile """
if len(sys.argv) < 2:
sys.exit('Usage: %s tracefile' % sys.argv[0])
if not os.path.exists(sys.argv[1]):
sys.exit('ERROR: Tracefile %s was not found!' % sys.argv[1])
tracefile = sys.argv[1]
print "=================================================================="
print ""
print "OBD2 trace decode"
print "----------------------"
print ""
print "Date: ", time.ctime()
print ""
print "Trace: ", tracefile
print ""
print "Loading default PID definitions from CSV file..."
obd2.load_pids_from_csv( 'obd2_std_PIDs.csv' )
# Global: obd2.PIDs[]
print ""
print "Loading default DTC definitions from CSV file..."
obd2.load_dtcs_from_csv( 'obd2_std_DTCs.csv' )
# Global: obd2.DTCs[]
# create OBD2_READER object
TYPE = 'FILE'
READER = 'ELM327'
# create reader object (disconnected)
reader = obd2_reader.OBD2reader( TYPE, READER )
reader.debug = debug
# open tracefile
reader.open_trace(tracefile)
# manually set since we can't query the tracefile
#reader.Style = 'can'
#reader.Headers = 1
#reader.Style = 'old'
#reader.Headers = 0
reader.Style = style
reader.Headers = headers
vehicle = obd2.OBD2( reader )
print ""
print "Reading from tracefile..."
print ""
while 1:
record = reader.RTRV_record()
if debug > 0:
print "-----------------------------------"
print "Raw Record: ",
pprint.pprint(record)
obd2_record = reader.triage_record( record )
if obd2_record == []:
# then this must have been something other than an obd2_record, nothing to do
pass
else:
if debug > 1:
print "--"
print "Triaged Record: ",
pprint.pprint(obd2_record)
print "--"
dec_rec = obd2.decode_obd2_record( obd2_record )
if debug > 0 :
print "--"
print "Decoded Record: ",
pprint.pprint( dec_rec )
print " "
print "=================================="
print " "
# do something with the decoded obd2_record
vehicle.store_info( dec_rec )
if reader.eof == 1:
break
print "-----------------------------------"
print ""
print ""
print "Reader Attributes:"
print "------------------"
pprint.pprint( reader.attr )
print ""
#
print "Reader State:"
print "-------------"
print " Type:", reader.Type
print " Device:", reader.Device
print " debug:", reader.debug
print " State:", reader.State
#print "recwaiting", reader.recwaiting
print " Style:", reader.Style
print " Headers:", reader.Headers
#reader.attr
#print reader.attr_cmds
print " Trace?:", reader.RecordTrace
print "Trace file:", reader.tf_out
#
print ""
print "Vehicle Basic Info:"
print "-------------------"
pprint.pprint( vehicle.info )
print ""
vehicle.show_basic_info()
print ""
print ""
print "Vehicle OBD2 Status:"
print "--------------------"
pprint.pprint( vehicle.obd2status )
print ""
print "-----------------------------------"
print ""
print "Vehicle supported PIDs:"
print "-----------------------"
pprint.pprint( vehicle.suppPIDs )
print ""
print "-----------------------------------"
print ""
print "Vehicle Sensor readings:"
print "--------------------"
pprint.pprint( vehicle.sensor_readings )
print ""
print "-----------------------------------"
print "END"
if __name__ == "__main__":
sys.exit(main())