326 lines
14 KiB
Python
326 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 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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try:
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from Queue import Queue, Empty
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except ImportError:
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from queue import Queue, Empty
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try:
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xrange
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except NameError:
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xrange = range
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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] == b'\x10\x01\x01':
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self.device._req_rdn()
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elif data[:3] == b'\x10\x01\x04':
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self.device.state = AUTH_STATES.KEY_SENDING_FAILED
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elif data[:3] == b'\x10\x02\x01':
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# 16 bytes
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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] == b'\x10\x02\x04':
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self.device.state = AUTH_STATES.REQUEST_RN_ERROR
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elif data[:3] == b'\x10\x03\x01':
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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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# The fetch characteristic controls the communication with the activity characteristic.
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elif hnd == self.device._char_fetch.getHandle():
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if data[:3] == b'\x10\x01\x01':
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# get timestamp from what date the data actually is received
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year = struct.unpack("<H", data[7:9])[0]
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month = struct.unpack("b", data[9:10])[0]
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day = struct.unpack("b", data[10:11])[0]
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hour = struct.unpack("b", data[11:12])[0]
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minute = struct.unpack("b", data[12:13])[0]
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self.device.first_timestamp = datetime(year, month, day, hour, minute)
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print("Fetch data from {}-{}-{} {}:{}".format(year, month, day, hour, minute))
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self.pkg = 0 #reset the packing index
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self.device._char_fetch.write(b'\x02', False)
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elif data[:3] == b'\x10\x02\x01':
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if self.device.last_timestamp > self.device.end_timestamp - timedelta(minutes=1):
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print("Finished fetching")
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return
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print("Trigger more communication")
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time.sleep(1)
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t = self.device.last_timestamp + timedelta(minutes=1)
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self.device.start_get_previews_data(t)
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elif data[:3] == b'\x10\x02\x04':
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print("No more activity fetch possible")
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return
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else:
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print("Unexpected data on handle " + str(hnd) + ": " + str(data))
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return
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elif hnd == self.device._char_activity.getHandle():
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if len(data) % 4 == 1:
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self.pkg += 1
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i = 1
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while i < len(data):
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index = int(self.pkg) * 4 + (i - 1) / 4
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timestamp = self.device.first_timestamp + timedelta(minutes=index)
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self.device.last_timestamp = timestamp
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category = struct.unpack("<B", data[i:i + 1])[0]
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intensity = struct.unpack("B", data[i + 1:i + 2])[0]
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steps = struct.unpack("B", data[i + 2:i + 3])[0]
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heart_rate = struct.unpack("B", data[i + 3:i + 4])[0]
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if timestamp < self.device.end_timestamp:
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self.device.activity_callback(timestamp,category,intensity,steps,heart_rate)
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i += 4
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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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else:
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print ("Unhandled handle: " + str(hnd) + " | Data: " + str(data))
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class miband(Peripheral):
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_send_rnd_cmd = struct.pack('<2s', b'\x02\x00')
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_send_enc_key = struct.pack('<2s', b'\x03\x00')
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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.auth_key = key
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self.queue = Queue()
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self.gyro_started_flag = False
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self.start_bytes = b'\x01\x00'
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self.stop_bytes = b"\x00\x00"
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self.gyro_sensitivity = 1
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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 generateAuthKey(self):
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if(self.auth_key):
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return struct.pack('<18s',b'\x01\x00'+ self.auth_key)
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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(self.start_bytes, 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(self.stop_bytes, 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(self.start_bytes, True)
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self._log.info("Enabling Activity Char notifications status...")
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self._desc_activity.write(self.start_bytes, 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(self.stop_bytes, True)
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self._log.info("Disabling Activity Char notifications status...")
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self._desc_activity.write(self.stop_bytes, 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(self._send_rnd_cmd)
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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 = self._send_enc_key + 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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res = self.queue.get(False)
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_type = res[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(res[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(res[1]))
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except Empty:
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break
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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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return return_tuple
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def _parse_raw_gyro(self, bytes):
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res = []
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for i in xrange(3):
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g = struct.unpack('hhh', bytes[2 + i * 6:8 + i * 6])
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res.append({'x': g[0], 'y': g[1], 'z': g[2]})
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return_tuple = ["GYRO", res]
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return return_tuple
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def send_vibration(self, duration):
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duration_time = time.time()
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pulse_time = time.time()
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vibro_start_value = 30
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#pulse_value = 100
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duration = 20
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vibro_current_value = vibro_start_value
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while True:
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if (time.time() - duration_time) >= duration:
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print ("Stopping vibration")
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self._char_alert.write(b'\x00\x00\x00\x00\x00\x00', withResponse=False)
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break
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else:
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if ((time.time() - pulse_time)*1000) >= vibro_current_value:
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pulse_time = time.time()
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self._char_alert.write(b'\xff' + (vibro_current_value).to_bytes(1, 'big') + b'\x00\x00\x00\x01', withResponse=False)
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vibro_current_value += 1
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print (vibro_current_value)
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if vibro_current_value > 255:
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vibro_current_value = vibro_start_value
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def send_gyro_start(self):
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if not self.gyro_started_flag:
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self._log.info("Starting gyro...")
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self.writeCharacteristic(self._sensor_handle, self.start_bytes, withResponse=True)
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self.writeCharacteristic(self._steps_handle, self.start_bytes, withResponse=True)
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self.writeCharacteristic(self._hz_handle, self.start_bytes, withResponse=True)
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self.gyro_started_flag = True
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self._char_sensor.write(b'\x01' + bytes([self.gyro_sensitivity]) + b'\x19', withResponse=False)
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self.writeCharacteristic(self._sensor_handle, self.stop_bytes, withResponse=True)
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self._char_sensor.write(b'\x02', withResponse=False)
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def send_heart_measure_start(self):
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self._log.info("Starting heart measure...")
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# stop heart monitor continues & manual
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self._char_heart_ctrl.write(b'\x15\x02\x00', True)
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self._char_heart_ctrl.write(b'\x15\x01\x00', True)
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# enable heart monitor notifications
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self.writeCharacteristic(self._heart_measure_handle, self.start_bytes, withResponse=True)
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# start heart monitor continues
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self._char_heart_ctrl.write(b'\x15\x01\x01', True)
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def send_heart_measure_keepalive(self):
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self._char_heart_ctrl.write(b'\x16', True)
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def start_heart_and_gyro(self, 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()
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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.waitForNotifications(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() |