def buildPacket(self, message):
''' Creates a ready to send modbus packet
:param message: The populated request/response to send
'''
data = message.encode()
packet = struct.pack('>BB',
message.unit_id,
message.function_code) + data
packet += struct.pack(">H", computeCRC(packet))
return packet
def buildPacket(self, message):
''' Creates a ready to send modbus packet
:param message: The request/response to send
:returns: The encoded packet
'''
data = self._preflight(message.encode())
packet = struct.pack('>BB',
message.unit_id,
message.function_code) + data
packet += struct.pack(">H", computeCRC(packet))
packet = '%s%s%s' % (self.__start, packet, self.__end)
return packet
