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from libAnt.constants import * |
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class Message: |
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def __init__(self, type: int, content: bytes): |
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self._type = type |
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self._content = content |
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def __len__(self): |
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return len(self._content) |
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def __iter__(self): |
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return self._content |
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def __str__(self): |
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return '({:02X}): '.format(self._type) + ' '.join('{:02X}'.format(x) for x in self._content) |
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def checksum(self) -> int: |
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chk = MESSAGE_TX_SYNC ^ len(self) ^ self._type |
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for b in self._content: |
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chk ^= b |
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return chk |
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def encode(self) -> bytes: |
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b = bytearray([MESSAGE_TX_SYNC, len(self), self._type]).extend(self._content).append(self.checksum()) |
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return bytes(b) |
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@property |
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def type(self) -> int: |
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return self._type |
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@property |
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def content(self) -> bytes: |
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return self._content |
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class BroadcastMessage(Message): |
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def __init__(self, channel: int, content: bytes): |
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c = bytearray([channel]) |
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c.extend(content[:8]) |
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if len(content) > 8: # Extended message |
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self._flag = content[8] |
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self._extendedContent = content[len(content) - 9:] |
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offset = 0 |
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if self._flag & EXT_FLAG_CHANNEL_ID: |
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self._deviceNumber = int.from_bytes(self._extendedContent[:2], byteorder='little', signed=False) |
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self._deviceType = self._extendedContent[2] |
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self._transType = self._extendedContent[3] |
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offset += 4 |
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if self._flag & EXT_FLAG_RSSI: |
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rssi = self._extendedContent[len(self._extendedContent) - offset:] |
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self._rssiMeasurementType = rssi[0] |
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self._rssi = rssi[1] |
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self._rssiThreshold = rssi[2] |
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offset += 3 |
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if self._flag & EXT_FLAG_TIMESTAMP: |
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self._rxTimestamp = int.from_bytes(self._extendedContent[len(self._extendedContent) - offset:], |
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byteorder='little', signed=False) |
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super().__init__(MESSAGE_CHANNEL_BROADCAST_DATA, bytes(c)) |
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def __str__(self): |
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pass |
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def checksum(self) -> int: |
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pass |
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def encode(self) -> bytes: |
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pass |
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class SystemResetMessage(Message): |
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def __init__(self): |
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super().__init__(MESSAGE_SYSTEM_RESET, b'0') |
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class SetNetworkKeyMessage(Message): |
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def __init__(self, channel: int, key: bytes): |
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content = bytearray([channel]).extend(key) |
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super().__init__(MESSAGE_NETWORK_KEY, bytes(content)) |
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class AssignChannelMessage(Message): |
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def __init__(self, channel: int, type: int, network: int = 0, extended: int = None): |
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content = bytearray([channel, type, network]) |
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if extended is not None: |
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content.append(extended) |
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super().__init__(MESSAGE_CHANNEL_ASSIGN, bytes(content)) |
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class SetChannelIdMessage(Message): |
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def __init__(self, channel: int, deviceNumber: int = 0, deviceType: int = 0, transType: int = 0): |
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content = bytes([channel, deviceNumber.to_bytes(2, byteorder='big'), deviceType, transType]) |
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super().__init__(MESSAGE_CHANNEL_ID, content) |
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class SetChannelRfFrequencyMessage(Message): |
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def __init__(self, channel: int, frequency: int = 2457): |
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content = bytes([channel, frequency - 2400]) |
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super().__init__(MESSAGE_CHANNEL_FREQUENCY, content) |
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102
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class OpenRxScanModeMessage(Message): |
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def __init__(self): |
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super().__init__(OPEN_RX_SCAN_MODE, b'1') |
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107
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108
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class EnableExtendedMessagesMessage(Message): |
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def __init__(self, enable: bool = True): |
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content = bytes([0, int(enable)]) |
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super().__init__(MESSAGE_ENABLE_EXT_RX_MESSAGES, content) |
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half2me /
libant
