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mod_elm.py
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mod_elm.py
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#Embedded file name: /build/PyCLIP/android/app/mod_elm.py
import mod_globals
import sys
import re
import time
import string
import threading
import socket
from datetime import datetime
from collections import OrderedDict
from kivy.utils import platform
if platform != 'android':
import serial
from serial.tools import list_ports
else:
from jnius import autoclass
mod_globals.os = 'android'
BluetoothAdapter = autoclass('android.bluetooth.BluetoothAdapter')
BluetoothDevice = autoclass('android.bluetooth.BluetoothDevice')
BluetoothSocket = autoclass('android.bluetooth.BluetoothSocket')
UUID = autoclass('java.util.UUID')
DevList = ['27',
'28',
'2E',
'30',
'31',
'32',
'34',
'35',
'36',
'37',
'3B',
'3D']
AllowedList = ['12',
'17',
'19',
'1A',
'21',
'22',
'23']
MaxBurst = 7
snat = {'01': '760',
'02': '724',
'04': '762',
'06': '791',
'07': '771',
'08': '778',
'09': '7EB',
'0D': '775',
'0E': '76E',
'0F': '770',
'11': '7C9',
'12': '7C3',
'13': '732',
'16': '18DAF271',
'1A': '731',
'1B': '7AC',
'1C': '76B',
'1E': '768',
'23': '773',
'24': '77D',
'25': '700',
'26': '765',
'27': '76D',
'28': '7D7',
'29': '764',
'2A': '76F',
'2B': '735',
'2C': '772',
'2D': '18DAF12D',
'2E': '7BC',
'2F': '76C',
'32': '776',
'3A': '7D2',
'3C': '7DB',
'40': '727',
'41': '18DAF1D2',
'46': '7CF',
'47': '7A8',
'4D': '7BD',
'50': '738',
'51': '763',
'57': '767',
'58': '767',
'59': '734',
'5B': '7A5',
'5D': '18DAF25D',
'60': '18DAF160',
'61': '7BA',
'62': '7DD',
'63': '73E',
'64': '7D5',
'66': '739',
'67': '793',
'68': '77E',
'6B': '7B5',
'6E': '7E9',
'73': '18DAF273',
'77': '7DA',
'78': '7BD',
'79': '7EA',
'7A': '7E8',
'7B': '18DAF272',
'7C': '77C',
'81': '761',
'82': '7AD',
'86': '7A2',
'87': '7A0',
'91': '7ED',
'93': '7BB',
'95': '7EC',
'97': '7C8',
'A1': '76C',
'A5': '725',
'A6': '726',
'A7': '733',
'A8': '7B6',
'C0': '7B9',
'D0': '18DAF1D0',
'D1': '7EE',
'D2': '18DAF1D2',
'D3': '7EE',
'DA': '18DAF1DA',
'DE': '69C',
'DF': '5C1',
'E0': '58B',
'E1': '5BA',
'E2': '5BB',
'E3': '4A7',
'E4': '757',
'E6': '484',
'E7': '7EC',
'E8': '5C4',
'E9': '762',
'EA': '4B3',
'EB': '5B8',
'EC': '5B7',
'ED': '704',
'F7': '736',
'F8': '737',
'FA': '77B',
'FD': '76F',
'FE': '76C',
'FF': '7D0'}
dnat = {'01': '740',
'02': '704',
'04': '742',
'06': '790',
'07': '751',
'08': '758',
'09': '7E3',
'0D': '755',
'0E': '74E',
'0F': '750',
'11': '7C3',
'12': '7C9',
'13': '712',
'16': '18DA71F2',
'1A': '711',
'1B': '7A4',
'1C': '74B',
'1E': '748',
'23': '753',
'24': '75D',
'25': '70C',
'26': '745',
'27': '74D',
'28': '78A',
'29': '744',
'2A': '74F',
'2B': '723',
'2D': '18DA2DF1',
'2C': '752',
'2E': '79C',
'2F': '74C',
'32': '756',
'3A': '7D6',
'3C': '7D9',
'40': '707',
'41': '18DAD2F1',
'46': '7CD',
'47': '788',
'4D': '79D',
'50': '718',
'51': '743',
'57': '747',
'58': '747',
'59': '714',
'5B': '785',
'5D': '18DA5DF2',
'60': '18DA60F1',
'61': '7B7',
'62': '7DC',
'63': '73D',
'64': '7D4',
'66': '719',
'67': '792',
'68': '75A',
'6B': '795',
'6E': '7E1',
'73': '18DA73F2',
'77': '7CA',
'78': '79D',
'79': '7E2',
'7A': '7E0',
'7B': '18DA72F2',
'7C': '75C',
'81': '73F',
'82': '7AA',
'86': '782',
'87': '780',
'91': '7E5',
'93': '79B',
'95': '7E4',
'97': '7D8',
'A1': '74C',
'A5': '705',
'A6': '706',
'A7': '713',
'A8': '796',
'C0': '799',
'D0': '18DAD0F1',
'D1': '7E6',
'D2': '18DAD2F1',
'D3': '7E6',
'DA': '18DADAF1',
'DE': '6BC',
'DF': '641',
'E0': '60B',
'E1': '63A',
'E2': '63B',
'E3': '73A',
'E4': '74F',
'E6': '622',
'E7': '7E4',
'E8': '644',
'E9': '742',
'EA': '79A',
'ED': '714',
'EB': '638',
'EC': '637',
'ED': '714',
'F7': '716',
'F8': '717',
'FA': '75B',
'FD': '74F',
'FE': '74C',
'FF': '7D0',}
negrsp = {'10': 'NR: General Reject',
'11': 'NR: Service Not Supported',
'12': 'NR: SubFunction Not Supported',
'13': 'NR: Incorrect Message Length Or Invalid Format',
'21': 'NR: Busy Repeat Request',
'22': 'NR: Conditions Not Correct Or Request Sequence Error',
'23': 'NR: Routine Not Complete',
'24': 'NR: Request Sequence Error',
'31': 'NR: Request Out Of Range',
'33': 'NR: Security Access Denied- Security Access Requested ',
'35': 'NR: Invalid Key',
'36': 'NR: Exceed Number Of Attempts',
'37': 'NR: Required Time Delay Not Expired',
'40': 'NR: Download not accepted',
'41': 'NR: Improper download type',
'42': 'NR: Can not download to specified address',
'43': 'NR: Can not download number of bytes requested',
'50': 'NR: Upload not accepted',
'51': 'NR: Improper upload type',
'52': 'NR: Can not upload from specified address',
'53': 'NR: Can not upload number of bytes requested',
'70': 'NR: Upload Download NotAccepted',
'71': 'NR: Transfer Data Suspended',
'72': 'NR: General Programming Failure',
'73': 'NR: Wrong Block Sequence Counter',
'74': 'NR: Illegal Address In Block Transfer',
'75': 'NR: Illegal Byte Count In Block Transfer',
'76': 'NR: Illegal Block Transfer Type',
'77': 'NR: Block Transfer Data Checksum Error',
'78': 'NR: Request Correctly Received-Response Pending',
'79': 'NR: Incorrect ByteCount During Block Transfer',
'7E': 'NR: SubFunction Not Supported In Active Session',
'7F': 'NR: Service Not Supported In Active Session',
'80': 'NR: Service Not Supported In Active Diagnostic Mode',
'81': 'NR: Rpm Too High',
'82': 'NR: Rpm Too Low',
'83': 'NR: Engine Is Running',
'84': 'NR: Engine Is Not Running',
'85': 'NR: Engine RunTime TooLow',
'86': 'NR: Temperature Too High',
'87': 'NR: Temperature Too Low',
'88': 'NR: Vehicle Speed Too High',
'89': 'NR: Vehicle Speed Too Low',
'8A': 'NR: Throttle/Pedal Too High',
'8B': 'NR: Throttle/Pedal Too Low',
'8C': 'NR: Transmission Range In Neutral',
'8D': 'NR: Transmission Range In Gear',
'8F': 'NR: Brake Switch(es)NotClosed (brake pedal not pressed or not applied)',
'90': 'NR: Shifter Lever Not In Park ',
'91': 'NR: Torque Converter Clutch Locked',
'92': 'NR: Voltage Too High',
'93': 'NR: Voltage Too Low'}
def get_bt_socket_stream():
adapter = BluetoothAdapter.getDefaultAdapter()
adapter.cancelDiscovery()
device = adapter.getRemoteDevice(bytearray.fromhex(''.join(mod_globals.opt_dev_address.split(':'))))
socket = device.createRfcommSocketToServiceRecord(UUID.fromString('00001101-0000-1000-8000-00805F9B34FB'))
socket.connect()
recv_stream = socket.getInputStream()
send_stream = socket.getOutputStream()
return (socket, recv_stream, send_stream)
def get_devices():
devs = {}
if mod_globals.os != 'android':
iterator = sorted(list(list_ports.comports()))
for port, desc, hwid in iterator:
devs[desc] = port
return devs
paired_devices = BluetoothAdapter.getDefaultAdapter().getBondedDevices().toArray()
for device in paired_devices:
deviceName = device.getName()
if deviceName:
deviceAddress = device.getAddress()
devs[deviceName] = deviceAddress
return devs
class Port:
portType = 0
ipaddr = '192.168.0.10'
tcpprt = 35000
portName = ''
portTimeout = 5
droid = None
btcid = None
hdr = None
def __init__(self, portName, speed, portTimeout):
self.portTimeout = portTimeout
portName = portName.strip()
if re.match('^\\d{1,3}\\.\\d{1,3}\\.\\d{1,3}\\.\\d{1,3}\\:\\d{1,5}$', portName):
import socket
self.ipaddr, self.tcpprt = portName.split(':')
self.tcpprt = int(self.tcpprt)
self.portType = 1
self.hdr = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
self.hdr.setsockopt(socket.IPPROTO_TCP, socket.TCP_NODELAY, 1)
self.hdr.connect((self.ipaddr, self.tcpprt))
self.hdr.setblocking(True)
elif mod_globals.os == 'android':
self.portType = 2
self.getConnected()
else:
self.portName = portName
self.portType = 0
try:
self.hdr = serial.Serial(self.portName, baudrate=speed, timeout=portTimeout)
except:
iterator = sorted(list(list_ports.comports()))
exit(2)
if mod_globals.opt_speed == 38400 and mod_globals.opt_rate != mod_globals.opt_speed:
self.check_elm()
def reinit(self):
if self.portType != 1: return
self.hdr.close()
self.hdr = socket.socket (socket.AF_INET, socket.SOCK_STREAM)
self.hdr.setsockopt (socket.IPPROTO_TCP, socket.TCP_NODELAY, 1)
self.hdr.connect ((self.ipaddr, self.tcpprt))
self.hdr.setblocking (True)
self.write('AT\r')
self.expect('>',1)
def closeConnection(self):
self.recv_stream.close()
self.send_stream.close()
self.socket.close()
def getConnected(self):
self.socket, self.recv_stream, self.send_stream = get_bt_socket_stream()
def read(self):
try:
byte = ''
if self.portType == 1:
try:
byte = self.hdr.recv(1)
except:
pass
elif self.portType == 2:
if self.recv_stream.available():
byte = chr(self.recv_stream.read())
elif self.hdr.inWaiting():
byte = self.hdr.read()
except:
exit(2)
return byte
def write(self, data):
try:
if self.portType == 1:
try:
rcv_bytes = self.hdr.sendall(data)
except:
self.reinit()
rcv_bytes = self.hdr.sendall(data)
return rcv_bytes
if self.portType == 2:
self.send_stream.write(data)
self.send_stream.flush()
return len(data)
return self.hdr.write(data)
except:
exit(2)
def expect(self, pattern, time_out = 1):
tb = time.time()
self.buff = ''
try:
while True:
if not mod_globals.opt_demo:
byte = self.read()
else:
byte = '>'
if byte == '\r':
byte = '\n'
self.buff += byte
tc = time.time()
if pattern in self.buff:
return self.buff
if tc - tb > time_out:
return self.buff + 'TIMEOUT'
except:
pass
return ''
def check_elm(self):
self.hdr.timeout = 2
for s in [38400,
115200,
230400,
57600,
9600,
500000]:
sys.stdout.flush()
self.hdr.baudrate = s
self.hdr.flushInput()
self.write('\r')
tb = time.time()
self.buff = ''
while True:
if not mod_globals.opt_demo:
byte = self.read()
else:
byte = '>'
self.buff += byte
tc = time.time()
if '>' in self.buff:
mod_globals.opt_speed = s
self.hdr.timeout = self.portTimeout
return
if tc - tb > 1:
break
sys.exit()
def soft_boudrate(self, boudrate):
if mod_globals.opt_demo:
return
if self.portType == 1:
return
if boudrate == 38400:
self.write('at brd 68\r')
elif boudrate == 57600:
self.write('at brd 45\r')
elif boudrate == 115200:
self.write('at brd 23\r')
elif boudrate == 230400:
self.write('at brd 11\r')
elif boudrate == 500000:
self.write('at brd 8\r')
tb = time.time()
self.buff = ''
while True:
if not mod_globals.opt_demo:
byte = self.read()
else:
byte = 'OK'
if byte == '\r' or byte == '\n':
self.buff = ''
continue
self.buff += byte
tc = time.time()
if 'OK' in self.buff:
break
if tc - tb > 1:
sys.exit()
self.hdr.timeout = 1
if boudrate == 38400:
self.hdr.baudrate = 38400
elif boudrate == 57600:
self.hdr.baudrate = 57600
elif boudrate == 115200:
self.hdr.baudrate = 115200
elif boudrate == 230400:
self.hdr.baudrate = 230400
elif boudrate == 500000:
self.hdr.baudrate = 500000
tb = time.time()
self.buff = ''
while True:
if not mod_globals.opt_demo:
byte = self.read()
else:
byte = 'ELM'
if byte == '\r' or byte == '\n':
self.buff = ''
continue
self.buff += byte
tc = time.time()
if 'ELM' in self.buff:
break
if tc - tb > 1:
self.hdr.timeout = self.portTimeout
self.hdr.baudrate = mod_globals.opt_speed
return
self.write('\r')
tb = time.time()
self.buff = ''
while True:
if not mod_globals.opt_demo:
byte = self.read()
else:
byte = '>'
if byte == '\r' or byte == '\n':
self.buff = ''
continue
self.buff += byte
tc = time.time()
if '>' in self.buff:
break
if tc - tb > 1:
self.hdr.timeout = self.portTimeout
self.hdr.baudrate = mod_globals.opt_speed
return
class ELM:
port = 0
lf = 0
vf = 0
keepAlive = 4
busLoad = 0
srvsDelay = 0
lastCMDtime = 0
portTimeout = 5
elmTimeout = 0
performanceModeLevel = 1
error_frame = 0
error_bufferfull = 0
error_question = 0
error_nodata = 0
error_timeout = 0
error_rx = 0
error_can = 0
response_time = 0
buff = ''
currentprotocol = ''
currentsubprotocol = ''
currentaddress = ''
startSession = ''
lastinitrsp = ''
currentScreenDataIds = []
rsp_cache = OrderedDict()
l1_cache = {}
tmpNotSupportedCommands = {}
notSupportedCommands = {}
ecudump = {}
ATR1 = True
ATCFC0 = False
supportedCommands = 0
unsupportedCommands = 0
portName = ''
lastMessage = ''
def __init__(self, portName, speed, log, startSession = '10C0'):
self.portName = portName
if not mod_globals.opt_demo:
self.port = Port(portName, speed, self.portTimeout)
if len(mod_globals.opt_log) > 0:
self.lf = open(mod_globals.log_dir + 'elm_' + mod_globals.opt_log, 'at')
self.vf = open(mod_globals.log_dir + 'ecu_' + mod_globals.opt_log, 'at')
if mod_globals.opt_debug and mod_globals.debug_file == None:
mod_globals.debug_file = open(mod_globals.log_dir + 'debug.txt', 'at')
self.lastCMDtime = 0
self.ATCFC0 = mod_globals.opt_cfc0
def __del__(self):
if not mod_globals.opt_demo:
self.port.write('atz\r')
self.port.atKeepAlive = 0
if self.run_allow_event:
self.run_allow_event.clear ()
def clear_cache(self):
self.rsp_cache = OrderedDict()
def setDump(self, ecudump):
self.ecudump = ecudump
def checkIfCommandUnsupported(self, req, res):
if 'NR' in res:
nr = res.split (':')[1]
if nr in ['12']:
if mod_globals.opt_csv_only:
self.notSupportedCommands[req] = res
else:
if req in self.tmpNotSupportedCommands.keys():
del self.tmpNotSupportedCommands[req]
self.notSupportedCommands[req] = res
else:
self.tmpNotSupportedCommands[req] = res
else:
if req in self.tmpNotSupportedCommands.keys():
del self.tmpNotSupportedCommands[req]
def request(self, req, positive = '', cache = True, serviceDelay = '0'):
if mod_globals.opt_demo and req in self.ecudump.keys():
return self.ecudump[req]
if cache and req in self.rsp_cache.keys():
return self.rsp_cache[req]
rsp = self.cmd(req, int(serviceDelay))
res = ''
if self.currentprotocol != 'can':
rsp_split = rsp.split('\n')[1:]
for s in rsp_split:
if '>' not in s and len(s.strip()):
res += s.strip() + ' '
else:
for s in rsp.split('\n'):
if ':' in s:
res += s[2:].strip() + ' '
elif s.replace(' ', '').startswith(positive.replace(' ', '')):
res += s.strip() + ' '
rsp = res
if req[:2] in AllowedList:
self.rsp_cache[req] = rsp
if self.vf != 0 and 'NR' not in rsp:
tmstr = datetime.now().strftime('%H:%M:%S.%f')[:-3]
tmp_addr = self.currentaddress
if self.currentaddress in dnat.keys():
tmp_addr = dnat[self.currentaddress]
self.vf.write(tmstr + ';' + tmp_addr + ';' + req + ';' + rsp + '\n')
self.vf.flush()
return rsp
def cmd(self, command, serviceDelay = 0):
command = command.upper()
if command in self.notSupportedCommands.keys():
return self.notSupportedCommands[command]
tb = time.time()
devmode = False
if tb - self.lastCMDtime < self.busLoad + self.srvsDelay and command.upper()[:2] not in ('AT', 'ST'):
time.sleep(self.busLoad + self.srvsDelay - tb + self.lastCMDtime)
tb = time.time()
saveSession = self.startSession
if mod_globals.opt_dev and command[0:2] in DevList:
devmode = True
self.start_session(mod_globals.opt_devses)
self.lastCMDtime = time.time()
if self.lf != 0:
tmstr = datetime.now().strftime('%H:%M:%S.%f')[:-3]
self.lf.write('#[' + tmstr + ']' + 'Switch to dev mode\n')
self.lf.flush()
if tb - self.lastCMDtime > self.keepAlive and len(self.startSession) > 0:
if self.lf != 0:
tmstr = datetime.now().strftime('%H:%M:%S.%f')[:-3]
self.lf.write('#[' + tmstr + ']' + 'KeepAlive\n')
self.lf.flush()
if not mod_globals.opt_demo:
self.port.reinit()
self.send_cmd(self.startSession)
self.lastCMDtime = time.time()
cmdrsp = ''
rep_count = 3
while rep_count > 0:
rep_count = rep_count - 1
no_negative_wait_response = True
self.lastCMDtime = tc = time.time()
cmdrsp = self.send_cmd(command)
self.checkIfCommandUnsupported(command, cmdrsp)
for line in cmdrsp.split('\n'):
line = line.strip().upper()
nr = ''
if line.startswith('7F') and len(line) == 8 and line[6:8] in negrsp.keys():
nr = line[6:8]
if line.startswith('NR'):
nr = line.split(':')[1]
if nr in ('21', '23'):
time.sleep(0.5)
no_negative_wait_response = False
elif nr in ('78',):
self.send_raw('at at 0')
self.send_raw('at st ff')
self.lastCMDtime = tc = time.time()
cmdrsp = self.send_cmd(command)
self.send_raw('at at 1')
break
if no_negative_wait_response:
break
if devmode:
self.startSession = saveSession
self.start_session(self.startSession)
self.lastCMDtime = time.time()
if self.lf != 0:
tmstr = datetime.now().strftime('%H:%M:%S.%f')[:-3]
self.lf.write('#[' + tmstr + ']' + 'Switch back from dev mode\n')
self.lf.flush()
self.srvsDelay = float(serviceDelay) / 1000.0
for line in cmdrsp.split('\n'):
line = line.strip().upper()
if line.startswith('7F') and len(line) == 8 and line[6:8] in negrsp.keys() and self.currentprotocol != 'can':
if self.lf != 0:
self.lf.write('#[' + str(tc - tb) + '] rsp:' + line + ':' + negrsp[line[6:8]] + '\n')
self.lf.flush()
if self.vf != 0:
tmstr = datetime.now().strftime('%H:%M:%S.%f')[:-3]
tmp_addr = self.currentaddress
if self.currentaddress in dnat.keys():
tmp_addr = dnat[self.currentaddress]
self.vf.write(tmstr + ';' + tmp_addr + ';' + command + ';' + line + ';' + negrsp[line[6:8]] + '\n')
self.vf.flush()
return cmdrsp
def send_cmd(self, command):
command = command.upper()
if mod_globals.opt_rate < 50000 and len(command) == 6 and command[:4] == '1902':
command = '1902AF'
if command.upper()[:2] in ('AT', 'ST') or self.currentprotocol != 'can':
return self.send_raw(command)
elif self.ATCFC0:
return self.send_can_cfc0(command)
else:
rsp = self.send_can(command)
if self.error_frame > 0 or self.error_bufferfull > 0:
self.ATCFC0 = True
self.cmd('at cfc0')
rsp = self.send_can_cfc0(command)
return rsp
def send_can(self, command):
command = command.strip().replace(' ', '')
if len(command) == 0:
return
elif len(command) % 2 != 0:
return 'ODD ERROR'
elif not all((c in string.hexdigits for c in command)):
return 'HEX ERROR'
raw_command = []
cmd_len = len(command) / 2
if cmd_len < 8:
if command in self.l1_cache.keys():
raw_command.append('%0.2X' % cmd_len + command + self.l1_cache[command])
else:
raw_command.append('%0.2X' % cmd_len + command)
else:
raw_command.append('1' + ('%0.3X' % cmd_len)[-3:] + command[:12])
command = command[12:]
frame_number = 1
while len(command):
raw_command.append('2' + ('%X' % frame_number)[-1:] + command[:14])
frame_number = frame_number + 1
command = command[14:]
responses = []
for f in raw_command:
frsp = self.send_raw(f)
for s in frsp.split('\n'):
if s.strip() == f:
continue
s = s.strip().replace(' ', '')
if len(s) == 0:
continue
if all((c in string.hexdigits for c in s)):
if s[:1] == '3':
continue
responses.append(s)
result = ''
noerrors = True
cframe = 0
nbytes = 0
nframes = 0
if len(responses) == 0:
return ''
if len(responses) > 1 and responses[0].startswith('037F') and responses[0][6:8] == '78':
responses = responses[1:]
mod_globals.opt_n1c = True
if len(responses) == 1:
if responses[0][:1] == '0':
nbytes = int(responses[0][1:2], 16)
nframes = 1
result = responses[0][2:2 + nbytes * 2]
else:
self.error_frame += 1
noerrors = False
else:
if responses[0][:1] == '1':
nbytes = int(responses[0][1:4], 16)
nframes = nbytes / 7 + 1
cframe = 1
result = responses[0][4:16]
else:
self.error_frame += 1
noerrors = False
for fr in responses[1:]:
if fr[:1] == '2':
tmp_fn = int(fr[1:2], 16)
if tmp_fn != cframe % 16:
self.error_frame += 1
noerrors = False
continue
cframe += 1
result += fr[2:16]
else:
self.error_frame += 1
noerrors = False
if result[:2] == '7F':
noerrors = False
if noerrors and nframes < 16 and command[:1] == '2' and not mod_globals.opt_n1c:
self.l1_cache[command] = str(hex(nframes))[2:].upper()
if len(result) / 2 >= nbytes and noerrors:
result = ' '.join((a + b for a, b in zip(result[::2], result[1::2])))
return result
elif result[:2] == '7F' and result[4:6] in negrsp.keys():
if self.vf != 0:
tmstr = datetime.now().strftime('%H:%M:%S.%f')[:-3]
self.vf.write(tmstr + ';' + dnat[self.currentaddress] + ';' + command + ';' + result + ';' + negrsp[result[4:6]] + '\n')
self.vf.flush()
return 'NR:' + result[4:6] + ':' + negrsp[result[4:6]]
else:
return 'WRONG RESPONSE'
def send_can_cfc(self, command):
command = command.strip().replace(' ', '').upper()
if len(command) == 0:
return
elif len(command) % 2 != 0:
return 'ODD ERROR'
elif not all((c in string.hexdigits for c in command)):
return 'HEX ERROR'
raw_command = []
cmd_len = len(command) / 2
if cmd_len < 8:
raw_command.append('%0.2X' % cmd_len + command)
else:
raw_command.append('1' + ('%0.3X' % cmd_len)[-3:] + command[:12])
command = command[12:]
frame_number = 1
while len(command):
raw_command.append('2' + ('%X' % frame_number)[-1:] + command[:14])
frame_number = frame_number + 1
command = command[14:]
responses = []
BS = 1
ST = 0
Fc = 0
Fn = len(raw_command)
if Fn > 1:
self.send_raw('at cfc1')
while Fc < Fn:
if Fn > 1 and Fn - Fc == 1:
self.send_raw('at cfc0')
frsp = ''
if not self.ATR1:
frsp = self.send_raw('at r1')
self.ATR1 = True
tb = time.time()
if len(raw_command[Fc]) == 16:
frsp = self.send_raw(raw_command[Fc])
else:
frsp = self.send_raw(raw_command[Fc] + '1')
frsp = self.send_raw(raw_command[Fc])
Fc = Fc + 1
for s in frsp.split('\n'):
if s.strip()[:len(raw_command[Fc - 1])] == raw_command[Fc - 1]:
continue
s = s.strip().replace(' ', '')
if len(s) == 0:
continue
if all((c in string.hexdigits for c in s)):
if s[:1] == '3':
BS = s[2:4]
if BS == '':
BS = '03'
BS = int(BS, 16)
ST = s[4:6]
if ST == '':
ST = 'EF'
if ST[:1].upper() == 'F':
ST = int(ST[1:2], 16) * 100
else:
ST = int(ST, 16)
break
else:
responses.append(s)
continue
cf = min({BS - 1, Fn - Fc - 1})
if cf > 0:
if self.ATR1:
frsp = self.send_raw('at r0')
self.ATR1 = False
while cf > 0:
cf = cf - 1
tc = time.time()
if (tc - tb) * 1000.0 < ST:
time.sleep(ST / 1000.0 - (tc - tb))
tb = tc
frsp = self.send_raw(raw_command[Fc])
Fc = Fc + 1
if len(responses) != 1:
return 'WRONG RESPONSE'
result = ''
noErrors = True
cFrame = 0
nBytes = 0
nFrames = 0
if responses[0][:1] == '0':
nBytes = int(responses[0][1:2], 16)
nFrames = 1
result = responses[0][2:2 + nBytes * 2]
elif responses[0][:1] == '1':
nBytes = int(responses[0][1:4], 16)
nBytes = nBytes - 6
nFrames = 1 + nBytes / 7 + bool(nBytes % 7)
cFrame = 1
result = responses[0][4:16]
while cFrame < nFrames:
sBS = hex(min({nFrames - cFrame, MaxBurst}))[2:]
frsp = self.send_raw('300' + sBS + '00' + sBS)
nodataflag = False
for s in frsp.split('\n'):
if s.strip()[:len(raw_command[Fc - 1])] == raw_command[Fc - 1]:
continue
if 'NO DATA' in s:
nodataflag = True
break
s = s.strip().replace(' ', '')
if len(s) == 0:
continue
if all((c in string.hexdigits for c in s)):
responses.append(s)
if s[:1] == '2':
tmp_fn = int(s[1:2], 16)
if tmp_fn != cFrame % 16:
self.error_frame += 1
noErrors = False
continue
cFrame += 1
result += s[2:16]
continue
if nodataflag:
break
else:
self.error_frame += 1
noErrors = False
if len(result) / 2 >= nBytes and noErrors and result[:2] != '7F':
result = ' '.join((a + b for a, b in zip(result[::2], result[1::2])))
return result
elif result[:2] == '7F' and result[4:6] in negrsp.keys():
if self.vf != 0:
tmstr = datetime.now().strftime('%H:%M:%S.%f')[:-3]
self.vf.write(tmstr + ';' + dnat[self.currentaddress] + ';' + command + ';' + result + ';' + negrsp[result[4:6]] + '\n')
self.vf.flush()
return 'NR:' + result[4:6] + ':' + negrsp[result[4:6]]
else:
return 'WRONG RESPONSE'
def send_can_cfc0(self, command):