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mod_ecu_service.py
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mod_ecu_service.py
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# -*- coding: utf-8 -*-
import sys
import xml.dom.minidom
from xml.dom.minidom import parse
import mod_globals
from mod_utils import pyren_encode
class ecu_mnemolocation:
name = ''
startByte = ''
startBit = ''
rOffset = ''
def __str__(self):
out = 'name=%-50s startByte=%2s startBit=%s rOffset=%s\n' % (self.name,
self.startByte,
self.startBit,
self.rOffset)
return pyren_encode(out)
def __init__(self, ml):
self.name = ml.getAttribute('name')
self.startByte = ml.getAttribute('startByte')
self.startBit = ml.getAttribute('startBit')
self.rOffset = ml.getAttribute('rOffset')
class ecu_service_response:
val = ''
status = 0
mnemolocations = {}
def __init__(self, sr):
self.val = sr.getAttribute('val')
self.status = sr.getAttribute('status')
self.mnemolocations = {}
MnemoLocations = sr.getElementsByTagName('MnemoLocation')
if MnemoLocations:
for ml in MnemoLocations:
mnemoloc = ecu_mnemolocation(ml)
self.mnemolocations[mnemoloc.name] = mnemoloc
def rspStrip(rsp, req):
rsp = rsp.replace(req, '')
rsp = rsp.replace('>', '')
rsp = rsp.replace(' ', '')
rsp = rsp.replace('\t', '')
return rsp
def executeService(service, elm, status = [], param = '', cache = False):
sentDataIdentifires = []
performanceMode = mod_globals.opt_perform and elm.performanceModeLevel > 1
commandToSend = service.startReq
if performanceMode and elm.currentScreenDataIds:
commandToSend, sentDataIdentifires = prepareComplexRequest(service.startReq, elm.currentScreenDataIds)
if len(service.params) > 0:
if service.params[0]['type'] == 'DTC':
param = mod_globals.ext_cur_DTC
pos = (int(service.params[0]['pos']) - 1) * 2
commandToSend = commandToSend[:pos] + param + commandToSend[pos:]
try:
localDelay = int(service.delay)
except ValueError:
localDelay = 0
if len(service.startNextDelay) > 1:
localDelay = service.startNextDelay
rsp = elm.request(commandToSend, '', cache, localDelay)
rsp = rspStrip(rsp, commandToSend)
first_rsp = rsp
if performanceMode and sentDataIdentifires:
first_rsp = parseComplexResponse(elm, service.simpleRsp, rsp, sentDataIdentifires)
if len(service.simpleRsp) and rsp.startswith(service.simpleRsp):
return first_rsp
for rspk in list(service.responces.keys()):
if rsp.startswith(rspk):
if rsp in list(service.responces.keys()) and service.responces[rsp].status in list(status.keys()):
first_rsp = status[service.responces[rsp].status]
break
flag = True
for rspk in list(service.startRepeatInProgres.keys()):
if rsp.startswith(rspk):
flag = False
break
if flag:
return first_rsp
commandToSend = service.repeatReq
localDelay = service.delay
if len(service.repeatNextDelay) > 1:
localDelay = service.repeatNextDelay
count = 0
while count < 100:
count += 1
rsp = elm.request(commandToSend, '', cache, localDelay)
rsp = rspStrip(rsp, commandToSend)
for rspk in list(service.responces.keys()):
if rsp.startswith(rspk):
if rsp in list(service.responces.keys()) and service.responces[rsp].status in list(status.keys()):
first_rsp = status[service.responces[rsp].status]
break
flag = True
for rspk in list(service.repeatRepeatInProgres.keys()):
if rsp.startswith(rspk):
flag = False
break
if flag:
return first_rsp
return first_rsp
def prepareComplexRequest(request, screenDataIds):
commandToSend = request
sentDataIdentifires = []
screenDataIdsNumber = len(screenDataIds[0])
if screenDataIdsNumber > 1:
firstDataId = screenDataIds[0][0].id
if firstDataId == request[2:]:
commandToSend = request[:2]
for did in screenDataIds[0]:
commandToSend += did.id
sentDataIdentifires = screenDataIds.pop(0)
return commandToSend, sentDataIdentifires
def parseComplexResponse(elm, positiveRsp, response, sentDataIds):
first_rsp = ''
posInResp = 2
byteLength = 2
sentDataIdsLength = len(sentDataIds)
for i in range(sentDataIdsLength):
dataId = response[posInResp:posInResp + 2 * byteLength]
posInResp += 2 * byteLength
didDataLength = int(sentDataIds[i].dataBitLength)/8
didData = response[posInResp: posInResp + didDataLength * byteLength]
posInResp += didDataLength * byteLength
if i == 0:
first_rsp = positiveRsp + dataId + didData
resp = positiveRsp + dataId + didData
resp = ' '.join(a+b for a,b in zip(resp[::2], resp[1::2]))
elm.rsp_cache['22' + dataId] = resp
return first_rsp
class ecu_service:
id = ''
delay = ''
mode = ''
startReq = ''
repeatReq = ''
simpleRsp = ''
startNextDelay = 0
repeatNextDelay = 0
responces = {}
responcesRepeat = {}
startRepeatInProgres = {}
repeatRepeatInProgres = {}
params = []
def __init__(self, sv):
self.id = sv.getAttribute('serviceID')
self.delay = sv.getAttribute('delay')
self.mode = sv.getAttribute('mode')
self.responces = {}
self.responcesRepeat = {}
self.startRepeatInProgres = {}
self.repeatRepeatInProgres = {}
self.params = []
Start = sv.getElementsByTagName('Start')
if Start:
for st in Start:
Request = st.getElementsByTagName('Request').item(0)
if Request:
self.startReq = Request.getAttribute('val')
self.startNextDelay = Request.getAttribute('nextDelay')
Params = Request.getElementsByTagName('Params').item(0)
if Params:
Param = Params.getElementsByTagName('Param')
if Param:
for pr in Param:
parm_dic = {}
parm_dic['rank'] = pr.getAttribute('rank')
parm_dic['type'] = pr.getAttribute('type')
parm_dic['pos'] = pr.getAttribute('pos')
if pr.hasAttribute('size'):
parm_dic['size'] = pr.getAttribute('size')
else:
parm_dic['size'] = ''
self.params.append(parm_dic)
self.simpleRsp = ''
Simple = st.getElementsByTagName('Simple').item(0)
if Simple:
resp = ecu_service_response(Simple)
self.responces[resp.val] = resp
self.simpleRsp = resp.val
RepeatInProgress = st.getElementsByTagName('RepeatInProgress').item(0)
if RepeatInProgress:
resp = ecu_service_response(RepeatInProgress)
self.responces[resp.val] = resp
self.startRepeatInProgres[resp.val] = resp
Resp = st.getElementsByTagName('Resp')
if Resp:
for rsp in Resp:
resp = ecu_service_response(rsp)
self.responces[resp.val] = resp
Repeat = sv.getElementsByTagName('Repeat')
if Repeat:
for rep in Repeat:
Request = rep.getElementsByTagName('Request').item(0)
if Request:
self.repeatReq = Request.getAttribute('val')
self.repeatNextDelay = Request.getAttribute('nextDelay')
Simple = rep.getElementsByTagName('Simple').item(0)
if Simple:
resp = ecu_service_response(Simple)
self.responces[resp.val] = resp
RepeatInProgress = rep.getElementsByTagName('RepeatInProgress').item(0)
if RepeatInProgress:
resp = ecu_service_response(RepeatInProgress)
self.responcesRepeat[resp.val] = resp
self.repeatRepeatInProgres[resp.val] = resp
Resp = rep.getElementsByTagName('Resp')
if Resp:
for rsp in Resp:
resp = ecu_service_response(rsp)
self.responcesRepeat[resp.val] = resp
class ecu_services:
def __init__(self, service_list, mdoc, opt, tran):
for k in list(opt.keys()):
if 'Service' in k:
xmlstr = opt[k]
odom = xml.dom.minidom.parseString(xmlstr)
odoc = odom.documentElement
service = ecu_service(odoc)
service_list[service.id] = service