from PySide2.QtWidgets import QApplication, QTextBrowser, QFileDialog, QDialog
from threading import Thread
from PySide2.QtCore import Signal, QObject
from datetime import datetime
from ui_e2ewindow import Ui_MainWindow
import os
def ValidDataCheck(line_data, Frame_DLC, data_Length, message_start, log):
data = line_data.split() # 将字符串按空格拆分成字符串列表
data_state = False # 默认该行字符串不是有效的检查数据
date_error = False # 默认该行字符串可能是有效的检查数据
global message_start_auto, line_label
# 通过字符串长度来否决数据有效性
if len(data) <= data_Length or len(data) < message_start + Frame_DLC:
# 如果报文长度小于设置最小长度 或 报文长度小于起始字节+DLC长度
date_error = True
if date_error:
valid_check_str = 'line ' + str(line_label) + \
' ' + line_data.replace("\n", "") + ' 无效报文，长度不满足条件'
log.write(valid_check_str + '\n' + '\n')
pass
else:
# 通过检查字符串中是否存在报文来判断是否是有效数据
sum_cal = 0
if message_start == -1:
for i in range(0, len(data)):
# 自动匹配寻找报文起始位置，从头依次寻找连续DLC长度的两字节报文
if len(data[i]) == 2:
sum_cal = sum_cal + 1
else:
sum_cal = 0
if sum_cal >= Frame_DLC:
data_state = True
message_start_auto = i - Frame_DLC + 1
break # 一旦寻找到DLC长度的报文，退出继续寻找
else:
for j in range(message_start, message_start + Frame_DLC):
# 指定报文起始位，则直接验证是否连续DLC长度均为2字节报文
if len(data[j]) == 2:
sum_cal = sum_cal + 1
else:
sum_cal = 0
if sum_cal >= Frame_DLC:
data_state = True
message_start_auto = message_start
break # 一旦寻找到DLC长度的报文，退出继续寻找
if data_state:
message_start_auto_str = 'line ' + str(
line_label) + ' 有效报文，报文起始于第' + str(message_start_auto + 1) + ' 个字符段'
else:
message_start_auto_str = 'line ' + str(
line_label) + ' ' + line_data.replace("\n", "") + ' 无效报文，未能成功自动匹配报文起始字符段' + '\n'
log.write(message_start_auto_str + '\n')
return data_state
# 匹配检查的CAN ID
def FrameMatch(line_data, frame_lst, id_seq, log):
data = line_data.split() # 将字符串按空格拆分成字符串列表
match_id = ''
global id_sequence_auto, line_label, dlc_length, message_start_auto
id_sequence_auto = -1
if id_seq == -1:
match_str = 'line ' + str(line_label) + ' 自动匹配报文ID'
log.write(match_str + '\n')
for i in range(0, len(frame_lst)):
if id_seq == -1:
for j in range(0, len(data)):
if j in range(message_start_auto, message_start_auto + dlc_length):
pass # 数据区不检查ID
else:
try:
compare = int(data[j], 16) == int(frame_lst[i], 16)
except ValueError:
pass
else:
if compare:
match_id = frame_lst[i]
id_sequence_auto = j
break # 寻找到ID，不再继续在本行匹配
else:
try:
compare = int(data[id_seq], 16) == int(frame_lst[i], 16)
except ValueError:
pass
else:
if compare:
match_id = frame_lst[i]
id_sequence_auto = id_seq
if match_id != '':
break # 寻找到某ID，不再继续寻找其他ID
if (id_sequence_auto != -1) and (
id_sequence_auto not in range(message_start_auto, message_start_auto + dlc_length)):
id_sequence_auto_str = 'line ' + str(
line_label) + ' 成功匹配到指定报文ID，位于第' + str(id_sequence_auto + 1) + '个字符段，报文ID为 ' + match_id
else:
match_id = ''
id_sequence_auto_str = 'line ' + str(
line_label) + ' ' + line_data.replace("\n", "") + ' 未成功匹配到指定报文ID' + '\n'
log.write(id_sequence_auto_str + '\n')
return match_id
def rcCheck(message, match_id):
global rc_old, rc_ini, frame_list, rc_sequence, rc_mask, rc_max, line_label
for i in range(0, len(frame_list)):
if int(match_id, 16) == int(frame_list[i], 16):
if rc_ini[i] == 1 and (message[rc_sequence] & rc_mask) != (rc_old[i] + 1) % (rc_max + 1):
rc_old[i] = message[rc_sequence] & rc_mask
return False
else:
rc_old[i] = message[rc_sequence] & rc_mask
rc_ini[i] = 1
return True
break
def crcCheck(message):
global algorithm_type, message_start_auto, dlc_length, crc_sequence, ini_xor, poly, result_xor
crcCheck_st = False
if algorithm_type == 'XOR':
CRC_result = 0
for i in range(0, dlc_length - 1):
if i == crc_sequence:
i = i + 1
else:
CRC_result = CRC_result ^ message[i]
else:
CRC_result = ini_xor
for i in range(0, dlc_length - 1):
if i == crc_sequence:
i = i + 1
else:
CRC_result = CRC_result ^ message[i]
for j in range(
