def deal645Frame(frame):
l = [False]
if len(frame) < MIN_LEN_645FRAME:
return l
frame = frame.upper()
for i in range(0, len(frame), 2):
if frame[i:i + 2] == '68' and frame[(
i + POS_64507_HEAD2):(i + POS_64507_HEAD2) + 2] == '68':
dataLen = int(frame[(i + POS_64507_LEN):(i + POS_64507_LEN + 2)],
16) * 2
if dataLen + POS_64507_LEN < len(frame):
frameLen = i + dataLen + POS_64507_LEN
checkSum = calcCheckSum(frame[i:(frameLen + 2)])
checkSum = checkSum[-2:]
checkSum = checkSum.upper()
if checkSum == frame[frameLen + 2:frameLen + 4] and \
frame[frameLen + 4:frameLen + 6] == '16':
addr = frame[i + POS_64507_ADDR:i + POS_64507_ADDR + 12]
ctrl = frame[i + POS_64507_CTRL:i + POS_64507_CTRL + 2]
data = frame[i + POS_64507_DATA:i + POS_64507_DATA +
dataLen]
l[0] = True
l += [addr, ctrl, data]
return l
return l
def dl645_makeframe(dt):
# datavalue 转换
if 'datavalue' not in dt or dt['datavalue'] == None or len(
dt['datavalue']) == 0:
dt['data'] = [0x02]
dt['ctrl'] |= 0xC0
else:
dt['data'] += fat.str2hex(dt['datavalue'], 0)
# 计算长度
dlen = len(dt['data'])
dt['dlen'] = fat.hex2str([dlen], 0)
dt['ctrl'] = fat.hex2str([dt['ctrl'] | 0x80], 0)
dt['addr'] = pfun._strReverse(dt['addr'])
dt['data'] = fat.hex2str(dt['data'], 1) # hex
frame = '68' + dt['addr'] + '68' + dt['ctrl'] + dt['dlen'] + dt[
'data'] # + dt['cs'] + '16'
# 计算CRC
dt['cs'] = pfun.calcCheckSum(frame)
frame += dt['cs'] + '16'
# print('Send:', frame)
# 字节间增加空格
framespace = ''
for i in range(0, len(frame), 2):
framespace += frame[i:i + 2] + ' '
return framespace
def dl645_dealframe(frame):
frame = frame.replace(' ', '')
if len(frame) < MIN_LEN_645FRAME:
return False, None
frame = frame.upper()
dt = {'addr': '', 'ctrl': '', 'data': ''}
for i in range(0, len(frame), 2):
if frame[i:i + 2] == '68' and frame[(
i + POS_64507_HEAD2):(i + POS_64507_HEAD2) + 2] == '68':
dataLen = int(frame[(i + POS_64507_LEN):(i + POS_64507_LEN + 2)],
16) * 2
if dataLen + POS_64507_LEN < len(frame):
frameLen = i + dataLen + POS_64507_LEN
checkSum = calcCheckSum(frame[i:(frameLen + 2)])
checkSum = checkSum[-2:]
checkSum = checkSum.upper()
if checkSum == frame[frameLen + 2:frameLen + 4] and \
frame[frameLen + 4:frameLen + 6] == '16':
addr = frame[i + POS_64507_ADDR:i + POS_64507_ADDR +
12].upper()
dt['addr'] = pfun._strReverse(addr)
# dt['ctrl'] = frame[i + POS_64507_CTRL:i + POS_64507_CTRL + 2]
dt['ctrl'] = int(
frame[i + POS_64507_CTRL:i + POS_64507_CTRL + 2], 16)
# dt['data'] = frame[i + POS_64507_DATA:i + POS_64507_DATA + dataLen]
datastr = frame[i + POS_64507_DATA:i + POS_64507_DATA +
dataLen]
dt['data'] = fat.str2hex(datastr, 1)
if dt['ctrl'] & 0x80 == 0: # 只响应抄读帧
return True, dt
return False, None
def make645Frame(head, addr, ctrl, data):
frame = '68' + addr + '68' + ctrl
datalen = hex(len(data) // 2).replace('0x', '0000')[-2:]
frame += datalen
frame += data
checkSum = calcCheckSum(frame)
checkSum = checkSum[-2:]
frame += (checkSum + '16')
frame = head + frame
return frame
def make645Frame(head, addr, ctrl, data, mode):
frame = '68' + addr + '68' + ctrl
datalen = str(hex(len(data) // 2))
if len(datalen) < 4:
datalen = '0' + datalen[-1]
frame += datalen
frame += data
checkSum = calcCheckSum(frame)
checkSum = checkSum[-2:]
frame += (checkSum + '16')
frame = head + frame
return frame
def make3761Frame(self, du):
self.frame['ctrl'] = '40'
datastr = self.frame['ctrl'] + self.frame['A1'] + self.frame['A2'] + self.frame['A3']
datastr += self.frame['AFN'] + self.frame['SEQ']
datastr += self.frame['DA1'] + self.frame['DA2']
datastr += self.frame['DT1'] + self.frame['DT2']
datastr += du # 数据单元
self.frame['crc'] = calcCheckSum(datastr)
datalen = int(len(datastr)/2)
datalenstr = hex(datalen<<2).replace('0x','00')[-2:] + '00'
self.frame['len'] = datalenstr[-4:]
frame = '68' + self.frame['len'] + self.frame['len'] + '68' + datastr + self.frame['crc'] + '16'
return frame
def deal3761Frame(self, frame):
for i in range(0, len(frame), 2):
if frame[i:i + 2] == '68' and frame[i + 10:i + 12] == '68':
framelen = int(frame[i + 4:i + 6] + frame[i + 2:i + 4], 16) >> 2
self.frame['end'] = frame[i + 12 + framelen * 2 + 2:i + 12 + framelen * 2 + 4]
self.frame['crc'] = frame[i + 12 + framelen * 2 + 0:i + 12 + framelen * 2 + 2]
if calcCheckSum(frame[i + 12:i + 12 + framelen * 2]) != self.frame['crc']:
return False
self.frame['ctrl'] = frame[i + 12:i + 14]
self.frame['A1'] = frame[i + 14:i + 18]
self.frame['A2'] = frame[i + 18:i + 22]
self.frame['A3'] = frame[i + 22:i + 24]
self.frame['AFN'] = frame[i + 24:i + 26]
self.frame['SEQ'] = frame[i + 26:i + 28]
self.frame['DA1'] = frame[i + 28:i + 30]
self.frame['DA2'] = frame[i + 30:i + 32]
self.frame['pn'] = self.Data2Fun(int(self.frame['DA1'], 16), int(self.frame['DA2'], 16))
self.frame['DT1'] = frame[i + 30:i + 32]
self.frame['DT2'] = frame[i + 32:i + 34]
self.frame['Fn'] = self.Data2Fun(int(self.frame['DT1'], 16), int(self.frame['DT2'], 16))
return True
return False