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@ -15,9 +15,11 @@ class SEMSocket(): |
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mac_address = "" |
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custom_service = None |
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authenticated = False |
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_name = None |
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_read_char = None |
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_write_char = None |
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_notify_char = None |
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_name_char = None |
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_btle_device = None |
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def __init__(self, mac): |
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@ -87,6 +89,32 @@ class SEMSocket(): |
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self.authenticated = self.authenticated and success |
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return success |
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@property |
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def name(self): |
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self._name = self._name_char.read().decode("UTF-8") |
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return self._name |
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@name.setter |
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def name(self, newName): |
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newNameBytes = newName.encode("UTF-8") |
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cmd = bytearray([0x02]) |
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payload = bytearray() |
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payload.append(0x02) |
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for i in range(20): |
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if i <= (len(newNameBytes) - 1): |
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payload.append(newNameBytes[i]) |
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else: |
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payload.append(0x00) |
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msg = self.BTLEMessage(self, cmd, payload) |
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success = msg.send() |
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# For some reason the original app sets the first 7 bytes of the payload to zero and sends it again. |
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# However, a first test showed, that this really doesn't change anything. If it becomes neccessary here's a first draft: |
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#for i in range(7): |
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# payload[i+1] = 0x00 |
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#msg = self.BTLEMessage(self, cmd, payload) |
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if not success: raise self.SendMessageFailed |
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if self.name != newName: raise self.NotLoggedIn |
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@property |
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def connected(self): |
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try: |
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@ -109,6 +137,8 @@ class SEMSocket(): |
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self._read_char = self._custom_service.getCharacteristics("0000fff1-0000-1000-8000-00805f9b34fb")[0] |
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self._write_char = self._custom_service.getCharacteristics("0000fff3-0000-1000-8000-00805f9b34fb")[0] |
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self._notify_char = self._custom_service.getCharacteristics("0000fff4-0000-1000-8000-00805f9b34fb")[0] |
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self._name_char = self._custom_service.getCharacteristics("0000fff6-0000-1000-8000-00805f9b34fb")[0] |
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self._btle_device.setDelegate(self._btle_handler) |
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def disconnect(self): |
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@ -142,6 +172,12 @@ class SEMSocket(): |
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class NotConnectedException(Exception): |
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pass |
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class SendMessageFailed(Exception): |
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pass |
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class NotLoggedIn(Exception): |
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pass |
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class BTLEMessage(): |
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MAGIC_START = bytearray([0x0f]) |
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MAGIC_END = bytearray([0xff, 0xff]) |
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@ -199,17 +235,28 @@ class SEMSocket(): |
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self.__btle_device = btle_device |
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def handleNotification(self, cHandle, data): |
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if len(data) <= 3: |
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print("Notification data seems invalid or incomplete. Could not parse: ", end="") |
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print(data) |
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return |
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message_type = data[2] |
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if message_type == 0x00: |
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if data[4] == 0x01: |
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print("Checksum error!") |
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else: |
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print("Unknown error:", data) |
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elif message_type == 0x01: |
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print("Time synced") |
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elif message_type == 0x03: #switch toggle |
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elif message_type == 0x01: #sync time response |
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if not data[3:] == b'\x00\x00\x02\xff\xff': |
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print("Time synced failed with unknown data: ", end="") |
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print(data) |
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elif message_type == 0x02: #set name response |
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if not data[3:] == b'\x00\x00\x03\xff\xff': |
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print("Set name failed with unknown data: ", end="") |
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print(data) |
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elif message_type == 0x03: #switch toggle response |
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self.__btle_device.getStatus() |
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elif message_type == 0x04: #status related data |
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elif message_type == 0x04: #status related response |
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voltage = data[8] |
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current = (data[9] << 8 | data[10]) / 1000 |
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power = (data[5] << 16 | data[6] << 8 | data[7]) / 1000 |
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@ -227,7 +274,7 @@ class SEMSocket(): |
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self.__btle_device.power_factor = power / (voltage * current) |
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except ZeroDivisionError: |
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self.__btle_device.power_factor = None |
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elif message_type == 0x17: |
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elif message_type == 0x17: #authentication related response |
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if data[5] == 0x00 or data[5] == 0x01: |
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# in theory the fifth byte indicates a login attempt response (0) or a response to a password change (1) |
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# but since a password change requires a valid login and a successful password changes logs you in, |
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@ -235,6 +282,10 @@ class SEMSocket(): |
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self.__btle_device.authenticated = not data[4] |
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else: |
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print("5th byte of login-response is > 1:", data) |
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elif message_type == 0x0f: #set icon response |
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if not data[3:] == b'\x00\x03\x00\x13\xff\xff': |
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print("Unknown response for setting icon: ", end="") |
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print(data[3:]) |
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else: |
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print ("Unknown message from Handle: 0x" + format(cHandle,'02X') + " Value: "+ format(data)) |
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