def execute(self, *args):
""" Execute the diagnostic request on the given device
:returns: The initialized response message
"""
# if _MCB.isListenOnly():
register = pack_bitstring(_MCB.get_diagnostic_register())
return ReturnDiagnosticRegisterResponse(register)
def encode(self):
""" Encodes response pdu
:returns: The encoded packet message
"""
result = pack_bitstring(self.bits)
packet = struct.pack('>B', len(result)) + result
return packet
def encode(self):
""" Encodes response pdu
:returns: The encoded packet message
"""
result = pack_bitstring(self.bits)
packet = struct.pack('>B', len(result)) + result
return packet
def encode(self):
""" Encodes the status bits to an event message
:returns: The encoded event message
"""
bits = [False] * 3
bits += [self.overrun, self.listen, self.broadcast, True]
packet = pack_bitstring(bits)
return packet
def encode(self):
""" Encodes the status bits to an event message
:returns: The encoded event message
"""
bits = [False] * 3
bits += [self.overrun, self.listen, self.broadcast, True]
packet = pack_bitstring(bits)
return packet
def encode(self):
""" Encodes write coils request
:returns: The byte encoded message
"""
count = len(self.values)
self.byte_count = (count + 7) // 8
packet = struct.pack('>HHB', self.address, count, self.byte_count)
packet += pack_bitstring(self.values)
return packet
def encode(self):
""" Encodes write coils request
:returns: The byte encoded message
"""
count = len(self.values)
self.byte_count = (count + 7) // 8
packet = struct.pack('>HHB', self.address, count, self.byte_count)
packet += pack_bitstring(self.values)
return packet
def add_bits(self, values):
""" Adds a collection of bits to be encoded
If these are less than a multiple of eight,
they will be left padded with 0 bits to make
it so.
:param values: The value to add to the buffer
"""
value = pack_bitstring(values)
self._payload.append(value)
def add_bits(self, values):
""" Adds a collection of bits to be encoded
If these are less than a multiple of eight,
they will be left padded with 0 bits to make
it so.
:param values: The value to add to the buffer
"""
value = pack_bitstring(values)
self._payload.append(value)
def encode(self):
""" Encodes the status bits to an event message
:returns: The encoded event message
"""
bits = [
self.read, self.slave_abort, self.slave_busy, self.slave_nak,
self.write_timeout, self.listen
]
bits += [True, False]
packet = pack_bitstring(bits)
return packet
def encode(self):
""" Encodes the status bits to an event message
:returns: The encoded event message
"""
bits = [self.read,
self.slave_abort,
self.slave_busy,
self.slave_nak,
self.write_timeout,
self.listen]
bits += [True, False]
packet = pack_bitstring(bits)
return packet
def from_coils(cls, coils, endian=Endian.Little):
""" Initialize a payload decoder with the result of
reading a collection of coils from a modbus device.
The coils are treated as a list of bit(boolean) values.
:param coils: The coil results to initialize with
:param endian: The endianess of the payload
:returns: An initialized PayloadDecoder
"""
if isinstance(coils, list):
payload = pack_bitstring(coils)
return cls(payload, endian)
raise ParameterException('Invalid collection of coils supplied')
def from_coils(cls, coils, endian=Endian.Little):
""" Initialize a payload decoder with the result of
reading a collection of coils from a modbus device.
The coils are treated as a list of bit(boolean) values.
:param coils: The coil results to initialize with
:param endian: The endianess of the payload
:returns: An initialized PayloadDecoder
"""
if isinstance(coils, list):
payload = pack_bitstring(coils)
return cls(payload, endian)
raise ParameterException('Invalid collection of coils supplied')
def test_bit_packing(self):
""" Test all string <=> bit packing functions """
self.assertEqual(unpack_bitstring(b'\x55'), self.bits)
self.assertEqual(pack_bitstring(self.bits), b'\x55')
def test_bit_packing(self):
""" Test all string <=> bit packing functions """
self.assertEqual(unpack_bitstring(b'\x55'), self.bits)
self.assertEqual(pack_bitstring(self.bits), b'\x55')
