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- import math
-
-
- class MAXPacketFactory:
- def create_packet(rec: str):
- pkt_type = int(rec[7:9], 16)
- if pkt_type == 0:
- return MAXPairPingPacket(rec)
- elif pkt_type == 1:
- return MAXPairPongPacket(rec)
- elif pkt_type == 2:
- return MAXAckPacket(rec)
- elif pkt_type == 0x22:
- return MAXSetGroupIdPacket(rec)
- elif pkt_type == 0xF1:
- return MAXWakeUpPacket(rec)
- elif pkt_type == 0xF0:
- return MAXResetPacket(rec)
- else:
- print("Unknown message type: {}".format(pkt_type))
- result = MAXPacket()
- result.from_received(rec)
- return result
-
-
- class MAXPacket:
- def __init__(self):
- self.length = 0
- self.counter = 0
- self.type = 0
- self.flag = 0
- self.sender_address = 0
- self.dest_address = 0
- self.group_id = 0
-
- def set_values(self, message_counter: str, message_type: str, message_flag: str, sender_address: str,
- dest_address: str, group_id: str):
- # self.length = length
- self.counter = message_counter
- self.type = message_type
- self.flag = message_flag
- self.sender_address = sender_address
- self.dest_address = dest_address
- self.group_id = group_id
-
- def from_received(self, rec: str):
- self.set_values(rec[3:5], rec[5:7], rec[7:9], rec[9:15], rec[15:21], rec[21:23])
- self.length = rec[1:3]
-
- def gen_header(self):
- header_str = "{}{}{}{}{}{}".format(self.counter, self.flag, self.type, self.sender_address,
- self.dest_address, self.group_id)
- return header_str
-
- def serialize(self):
- header = self.gen_header()
- length = int(math.ceil((len(header) + len(self.payload)) / 2))
- self.length = length
- return "Zs{0:02X}{1}{2}".format(length, header, self.payload)
-
- def to_string(self):
- return "MAXPacket: len={}, counter={}, flag={}, type={}, sender_addr={}, dest_addr={}, group_id={}".format(
- self.length, self.counter, self.flag, self.type, self.sender_address, self.dest_address, self.group_id
- )
-
-
- class MAXPairPingPacket(MAXPacket):
- def __init__(self, rec: str):
- self.from_received(rec)
- firmware_val = int(rec[23:25], 16)
- self.firmware_major = firmware_val // 16
- self.firmware_minor = firmware_val % 16
- self.device_type = rec[25:27]
- self.test_result = rec[27:29]
- self.serial = rec[29:-2]
-
- def to_string(self):
- result = "{}\nMAXPairPingPacket: firmware_major={} firmware_minor={} device_type={} " \
- "test_result={} serial={}".format(super().to_string(), self.firmware_major, self.firmware_minor,
- self.device_type, self.test_result, self.serial)
- return result
-
-
- class MAXPairPongPacket(MAXPacket):
- def __init__(self, message_counter: str, message_flag: str, sender_address: str, dest_address: str,
- group_id: str):
- self.set_values(message_counter, "01", message_flag, sender_address, dest_address, group_id)
- self.payload = "00"
-
- def to_string(self):
- result = "{}\nMAXPairPongPacket: payload={}".format(super().to_string(), self.payload)
- return result
-
-
- class MAXSetGroupIdPacket(MAXPacket):
- def __init__(self, message_counter: str, message_flag: str, sender_address: str, dest_address: str,
- group_id: str):
- self.set_values(message_counter, "01", message_flag, sender_address, dest_address, group_id)
- self.payload = "00"
-
- def to_string(self):
- result = "{}\nMAXSetGroupIdPacket: payload={}".format(super().to_string(), self.payload)
- return result
-
-
- class MAXAckPacket(MAXPacket):
- def __init__(self, rec):
- super().__init__()
- self.from_received(rec)
- self.ack = rec[23:25]
- self.unknown_field = rec[25:27]
-
- def to_string(self):
- result = "{}\nMAXAckPacket: ack={} unknown_field={}".format(super().to_string(),
- self.ack, self.unknown_field)
- return result
-
-
- class MAXWakeUpPacket(MAXPacket):
- def __init__(self, rec):
- super().__init__()
- self.from_received(rec)
-
-
- class MAXResetPacket(MAXPacket):
- def __init__(self, rec):
- super().__init__()
- self.from_received(rec)
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