345 lines
14 KiB
Python
345 lines
14 KiB
Python
import sys, os, time
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import logging
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import struct
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from bytepatterns import miband4 as bytepattern
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from bluepy.btle import (
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Peripheral, DefaultDelegate,
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ADDR_TYPE_RANDOM, ADDR_TYPE_PUBLIC,
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BTLEException, BTLEDisconnectError
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)
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from datetime import datetime, timedelta
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from Crypto.Cipher import AES
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from datetime import datetime
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from constants import (
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UUIDS, AUTH_STATES, ALERT_TYPES, QUEUE_TYPES, MUSICSTATE
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)
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from queue import Queue, Empty
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class Delegate(DefaultDelegate):
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def __init__(self, device):
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DefaultDelegate.__init__(self)
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self.device = device
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self.pkg = 0
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def handleNotification(self, hnd, data):
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if hnd == self.device._char_auth.getHandle():
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if data[:3] == bytepattern.fetch_begin:
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self.device._req_rdn()
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elif data[:3] == bytepattern.fetch_error:
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self.device.state = AUTH_STATES.KEY_SENDING_FAILED
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elif data[:3] == bytepattern.fetch_continue:
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random_nr = data[3:]
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self.device._send_enc_rdn(random_nr)
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elif data[:3] == bytepattern.fetch_complete:
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self.device.state = AUTH_STATES.REQUEST_RN_ERROR
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elif data[:3] == bytepattern.auth_ok:
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self.device.state = AUTH_STATES.AUTH_OK
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else:
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self.device.state = AUTH_STATES.AUTH_FAILED
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elif hnd == self.device._char_heart_measure.getHandle():
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self.device.queue.put((QUEUE_TYPES.HEART, data))
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elif hnd == 0x38:
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if len(data) == 20 and struct.unpack('b', data[0:1])[0] == 1:
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self.device.queue.put((QUEUE_TYPES.RAW_ACCEL, data))
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elif len(data) == 16:
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self.device.queue.put((QUEUE_TYPES.RAW_HEART, data))
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else:
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print("Unhandled data on handle 0x38: {}".format(data))
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elif hnd == self.device._char_hz.getHandle():
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if len(data) == 20 and struct.unpack('b', data[0:1])[0] == 1:
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self.device.queue.put((QUEUE_TYPES.RAW_ACCEL, data))
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elif len(data) == 11:
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#print("Unknown data: {}".format(bytes.hex(data, " ")))
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#print(struct.unpack('BBBBBBBBBB', data[1:]))
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# Seems to be a counter of the time the gyro is enabled.
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#print(struct.unpack(">x2L", data))
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#print(struct.unpack("<x5H", data))
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...
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elif len(data) == 8:
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self.device.queue.put((QUEUE_TYPES.AVG_GYRO, data))
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else:
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#print("Unknown sensor data ({}): {}".format(len(data), bytes.hex(data, " ")))
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...
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else:
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#print ("Unhandled handle: " + str(hnd) + " | Data: " + bytes.hex(data, " "))
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...
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class miband(Peripheral):
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def __init__(self, mac_address, key=None, timeout=0.5, debug=False):
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FORMAT = '%(asctime)-15s %(name)s (%(levelname)s) > %(message)s'
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logging.basicConfig(format=FORMAT)
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log_level = logging.WARNING if not debug else logging.DEBUG
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self._log = logging.getLogger(self.__class__.__name__)
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self._log.setLevel(log_level)
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self._log.info('Connecting to ' + mac_address)
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Peripheral.__init__(self, mac_address, addrType=ADDR_TYPE_PUBLIC)
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self._log.info('Connected')
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if not key:
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self.setSecurityLevel(level = "medium")
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self.timeout = timeout
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self.mac_address = mac_address
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self.state = None
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self.heart_measure_callback = None
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self.heart_raw_callback = None
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self.gyro_raw_callback = None
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self.gyro_avg_callback = None
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self.auth_key = key
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self.queue = Queue()
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self.write_queue = Queue()
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self.gyro_started_flag = False
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self.svc_1 = self.getServiceByUUID(UUIDS.SERVICE_MIBAND1)
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self.svc_2 = self.getServiceByUUID(UUIDS.SERVICE_MIBAND2)
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self.svc_heart = self.getServiceByUUID(UUIDS.SERVICE_HEART_RATE)
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self.svc_alert = self.getServiceByUUID(UUIDS.SERVICE_ALERT)
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self._char_alert = self.svc_alert.getCharacteristics(UUIDS.CHARACTERISTIC_ALERT)[0]
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self._char_auth = self.svc_2.getCharacteristics(UUIDS.CHARACTERISTIC_AUTH)[0]
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self._desc_auth = self._char_auth.getDescriptors(forUUID=UUIDS.NOTIFICATION_DESCRIPTOR)[0]
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self._char_heart_ctrl = self.svc_heart.getCharacteristics(UUIDS.CHARACTERISTIC_HEART_RATE_CONTROL)[0]
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self._char_heart_measure = self.svc_heart.getCharacteristics(UUIDS.CHARACTERISTIC_HEART_RATE_MEASURE)[0]
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self._heart_measure_handle = self._char_heart_measure.getHandle() + 1
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# Recorded information
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self._char_fetch = self.getCharacteristics(uuid=UUIDS.CHARACTERISTIC_FETCH)[0]
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self._desc_fetch = self._char_fetch.getDescriptors(forUUID=UUIDS.NOTIFICATION_DESCRIPTOR)[0]
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self._char_activity = self.getCharacteristics(uuid=UUIDS.CHARACTERISTIC_ACTIVITY_DATA)[0]
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self._desc_activity = self._char_activity.getDescriptors(forUUID=UUIDS.NOTIFICATION_DESCRIPTOR)[0]
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# Sensor characteristics and handles/descriptors
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self._char_hz = self.svc_1.getCharacteristics(UUIDS.CHARACTERISTIC_HZ)[0]
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self._hz_handle = self._char_hz.getHandle() + 1
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self._char_sensor = self.svc_1.getCharacteristics(UUIDS.CHARACTERISTIC_SENSOR)[0]
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self._sensor_handle = self._char_sensor.getHandle() + 1
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self._char_steps = self.svc_1.getCharacteristics(UUIDS.CHARACTERISTIC_STEPS)[0]
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self._steps_handle = self._char_steps.getHandle() + 1
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self._auth_notif(True)
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self.activity_notif_enabled = False
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self.waitForNotifications(0.1)
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self.setDelegate( Delegate(self) )
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def _auth_notif(self, enabled):
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if enabled:
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self._log.info("Enabling Auth Service notifications status...")
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self._desc_auth.write(bytepattern.start, True)
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elif not enabled:
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self._log.info("Disabling Auth Service notifications status...")
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self._desc_auth.write(bytepattern.stop, True)
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else:
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self._log.error("Something went wrong while changing the Auth Service notifications status...")
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def _auth_previews_data_notif(self, enabled):
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if enabled:
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self._log.info("Enabling Fetch Char notifications status...")
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self._desc_fetch.write(bytepattern.start, True)
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self._log.info("Enabling Activity Char notifications status...")
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self._desc_activity.write(bytepattern.start, True)
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self.activity_notif_enabled = True
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else:
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self._log.info("Disabling Fetch Char notifications status...")
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self._desc_fetch.write(bytepattern.stop, True)
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self._log.info("Disabling Activity Char notifications status...")
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self._desc_activity.write(bytepattern.stop, True)
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self.activity_notif_enabled = False
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def initialize(self):
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self._req_rdn()
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while True:
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self.waitForNotifications(0.1)
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if self.state == AUTH_STATES.AUTH_OK:
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self._log.info('Initialized')
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self._auth_notif(False)
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return True
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elif self.state is None:
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continue
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self._log.error(self.state)
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return False
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def _req_rdn(self):
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self._log.info("Requesting random number...")
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self._char_auth.write(bytepattern.request_random_number)
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self.waitForNotifications(self.timeout)
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def _send_enc_rdn(self, data):
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self._log.info("Sending encrypted random number")
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cmd = bytepattern.auth_key_prefix + self._encrypt(data)
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send_cmd = struct.pack('<18s', cmd)
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self._char_auth.write(send_cmd)
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self.waitForNotifications(self.timeout)
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def _encrypt(self, message):
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aes = AES.new(self.auth_key, AES.MODE_ECB)
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return aes.encrypt(message)
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def _get_from_queue(self, _type):
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try:
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res = self.queue.get(False)
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except Empty:
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return None
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if res[0] != _type:
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self.queue.put(res)
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return None
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return res[1]
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def _parse_queue(self):
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while True:
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try:
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queue_data = self.queue.get(False)
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_type = queue_data[0]
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if self.heart_measure_callback and _type == QUEUE_TYPES.HEART:
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self.heart_measure_callback(self._parse_heart_measure(queue_data[1]))
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elif self.gyro_raw_callback and _type == QUEUE_TYPES.RAW_ACCEL:
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self.gyro_raw_callback(self._parse_raw_gyro(queue_data[1]))
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elif self.gyro_avg_callback and _type == QUEUE_TYPES.AVG_GYRO:
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self.gyro_avg_callback(self._parse_avg_gyro(queue_data[1]))
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except Empty:
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break
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def _parse_avg_gyro(self, bytes):
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gyro_avg_data = struct.unpack('<b3h', bytes[1:])
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gyro_dict = {
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'gyro_time': gyro_avg_data[0],
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'gyro_avg_x': gyro_avg_data[1],
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'gyro_avg_y': gyro_avg_data[2],
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'gyro_avg_z': gyro_avg_data[3]
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}
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return_tuple = ['GYRO_AVG', gyro_dict]
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return return_tuple
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def _parse_heart_measure(self, bytes):
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res = struct.unpack('bb', bytes)[1]
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return_tuple = ["HR", res]
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print("BPM: {}".format(res))
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return return_tuple
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def _parse_raw_gyro(self, bytes):
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gyro_raw_data_list = []
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for i in range(2, 20, 6):
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gyro_raw_data = struct.unpack("3h", bytes[i:(i+6)])
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gyro_dict = {
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'gyro_raw_x': gyro_raw_data[0],
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'gyro_raw_y': gyro_raw_data[1],
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'gyro_raw_z': gyro_raw_data[2]
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}
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gyro_raw_data_list.append(gyro_dict)
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return_tuple = ["GYRO_RAW", gyro_raw_data_list]
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return return_tuple
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def process_write_queue(self):
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while True:
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try:
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res = self.write_queue.get(False)
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_type = res[0]
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_payload = res[1]
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if _type == 'write_cmd':
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self.write_cmd(_payload[0], _payload[1], response=_payload[2])
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elif _type == 'write_req':
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self.write_req(_payload[0], _payload[1], response=_payload[2])
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except Empty:
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break
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def vibrate(self, value):
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if value == 255 or value == 0:
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# '255' means 'continuous vibration'
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# I've arbitrarily assigned the otherwise pointless value of '0' to indicate 'stop_vibration'
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# These modes do not require pulse timing to avoid strange behavior.
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self.write_cmd(self._char_alert, bytepattern.vibration(value), queued=True)
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else:
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# A value of '150' will vibrate for ~200ms, hence vibration_scaler.
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# This isn't exact however, but does leave a ~5ms gap between pulses.
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# A scaler any lower causes the pulses to be indistinguishable from each other to a human.
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# I considered making this function accept a desired amount of vibration time in ms,
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# however it was fiddly and I couldn't get it right. More work could be done here.
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vibration_scaler = 0.75
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ms = round(value / vibration_scaler)
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vibration_duration = ms / 1000
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self.write_cmd(self._char_alert, bytepattern.vibration(value), queued=True)
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time.sleep(vibration_duration)
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def write_cmd(self, characteristic, data, response=False, queued=False):
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if queued:
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self.write_queue.put(['write_cmd', [characteristic, data, response]])
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else:
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characteristic.write(data, withResponse=response)
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def write_req(self, handle, data, response=True, queued=False):
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if queued:
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self.write_queue.put(['write_req', [handle, data, response]])
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else:
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self.writeCharacteristic(handle, data, withResponse=response)
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def wait_for_notifications_with_queued_writes(self, wait):
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self.process_write_queue()
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self.waitForNotifications(wait)
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def send_gyro_start(self, sensitivity):
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if not self.gyro_started_flag:
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self._log.info("Starting gyro...")
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self.write_req(self._sensor_handle, bytepattern.start)
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self.write_req(self._steps_handle, bytepattern.start)
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self.write_req(self._hz_handle, bytepattern.start)
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self.gyro_started_flag = True
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#self.write_cmd(self._char_sensor, bytepattern.gyro_start(sensitivity))
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self.write_cmd(self._char_sensor, bytes.fromhex('010119'))
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self.write_req(self._sensor_handle, bytepattern.stop)
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self.write_cmd(self._char_sensor, b'\x02')
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def send_heart_measure_start(self):
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self._log.info("Starting heart measure...")
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self.write_cmd(self._char_heart_ctrl, bytepattern.stop_heart_measure_manual, response=True)
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self.write_cmd(self._char_heart_ctrl, bytepattern.stop_heart_measure_continues, response=True)
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self.write_req(self._heart_measure_handle, bytepattern.start)
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self.write_cmd(self._char_heart_ctrl, bytepattern.start_heart_measure_continues, response=True)
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def send_heart_measure_keepalive(self):
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self.write_cmd(self._char_heart_ctrl, bytepattern.heart_measure_keepalive, response=True)
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def start_heart_and_gyro(self, sensitivity, callback):
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self.heart_measure_callback = callback
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self.gyro_raw_callback = callback
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self.send_gyro_start(sensitivity)
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#self.send_heart_measure_start()
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heartbeat_time = time.time()
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while True:
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self.wait_for_notifications_with_queued_writes(0.5)
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self._parse_queue()
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if (time.time() - heartbeat_time) >= 12:
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heartbeat_time = time.time()
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self.send_heart_measure_keepalive()
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self.send_gyro_start(sensitivity) |