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import sys, os, time
import logging
import struct
from bluepy.btle import (
Peripheral, DefaultDelegate,
ADDR_TYPE_RANDOM, ADDR_TYPE_PUBLIC,
BTLEException, BTLEDisconnectError
)
from datetime import datetime, timedelta
from Crypto.Cipher import AES
from datetime import datetime
from constants import (
UUIDS, AUTH_STATES, ALERT_TYPES, QUEUE_TYPES, MUSICSTATE
)
try:
from Queue import Queue, Empty
except ImportError:
from queue import Queue, Empty
try:
xrange
except NameError:
xrange = range
class Delegate(DefaultDelegate):
def __init__(self, device):
DefaultDelegate.__init__(self)
self.device = device
self.pkg = 0
def handleNotification(self, hnd, data):
if hnd == self.device._char_auth.getHandle():
if data[:3] == b'\x10\x01\x01':
self.device._req_rdn()
elif data[:3] == b'\x10\x01\x04':
self.device.state = AUTH_STATES.KEY_SENDING_FAILED
elif data[:3] == b'\x10\x02\x01':
# 16 bytes
random_nr = data[3:]
self.device._send_enc_rdn(random_nr)
elif data[:3] == b'\x10\x02\x04':
self.device.state = AUTH_STATES.REQUEST_RN_ERROR
elif data[:3] == b'\x10\x03\x01':
self.device.state = AUTH_STATES.AUTH_OK
else:
self.device.state = AUTH_STATES.AUTH_FAILED
elif hnd == self.device._char_heart_measure.getHandle():
self.device.queue.put((QUEUE_TYPES.HEART, data))
elif hnd == 0x38:
if len(data) == 20 and struct.unpack('b', data[0:1])[0] == 1:
self.device.queue.put((QUEUE_TYPES.RAW_ACCEL, data))
elif len(data) == 16:
self.device.queue.put((QUEUE_TYPES.RAW_HEART, data))
# The fetch characteristic controls the communication with the activity characteristic.
elif hnd == self.device._char_fetch.getHandle():
if data[:3] == b'\x10\x01\x01':
# get timestamp from what date the data actually is received
year = struct.unpack("<H", data[7:9])[0]
month = struct.unpack("b", data[9:10])[0]
day = struct.unpack("b", data[10:11])[0]
hour = struct.unpack("b", data[11:12])[0]
minute = struct.unpack("b", data[12:13])[0]
self.device.first_timestamp = datetime(year, month, day, hour, minute)
print("Fetch data from {}-{}-{} {}:{}".format(year, month, day, hour, minute))
self.pkg = 0 #reset the packing index
self.device._char_fetch.write(b'\x02', False)
elif data[:3] == b'\x10\x02\x01':
if self.device.last_timestamp > self.device.end_timestamp - timedelta(minutes=1):
print("Finished fetching")
return
print("Trigger more communication")
time.sleep(1)
t = self.device.last_timestamp + timedelta(minutes=1)
self.device.start_get_previews_data(t)
elif data[:3] == b'\x10\x02\x04':
print("No more activity fetch possible")
return
else:
print("Unexpected data on handle " + str(hnd) + ": " + str(data))
return
elif hnd == self.device._char_activity.getHandle():
if len(data) % 4 == 1:
self.pkg += 1
i = 1
while i < len(data):
index = int(self.pkg) * 4 + (i - 1) / 4
timestamp = self.device.first_timestamp + timedelta(minutes=index)
self.device.last_timestamp = timestamp
category = struct.unpack("<B", data[i:i + 1])[0]
intensity = struct.unpack("B", data[i + 1:i + 2])[0]
steps = struct.unpack("B", data[i + 2:i + 3])[0]
heart_rate = struct.unpack("B", data[i + 3:i + 4])[0]
if timestamp < self.device.end_timestamp:
self.device.activity_callback(timestamp,category,intensity,steps,heart_rate)
i += 4
elif hnd == self.device._char_hz.getHandle():
if len(data) == 20 and struct.unpack('b', data[0:1])[0] == 1:
self.device.queue.put((QUEUE_TYPES.RAW_ACCEL, data))
else:
print ("Unhandled handle: " + str(hnd) + " | Data: " + str(data))
class miband(Peripheral):
_send_rnd_cmd = struct.pack('<2s', b'\x02\x00')
_send_enc_key = struct.pack('<2s', b'\x03\x00')
def __init__(self, mac_address,key=None, timeout=0.5, debug=False):
FORMAT = '%(asctime)-15s %(name)s (%(levelname)s) > %(message)s'
logging.basicConfig(format=FORMAT)
log_level = logging.WARNING if not debug else logging.DEBUG
self._log = logging.getLogger(self.__class__.__name__)
self._log.setLevel(log_level)
self._log.info('Connecting to ' + mac_address)
Peripheral.__init__(self, mac_address, addrType=ADDR_TYPE_PUBLIC)
self._log.info('Connected')
if not key:
self.setSecurityLevel(level = "medium")
self.timeout = timeout
self.mac_address = mac_address
self.state = None
self.heart_measure_callback = None
self.heart_raw_callback = None
self.gyro_raw_callback = None
self.auth_key = key
self.queue = Queue()
self.gyro_started_flag = False
self.start_bytes = b'\x01\x00'
self.stop_bytes = b"\x00\x00"
self.gyro_sensitivity = 1
self.svc_1 = self.getServiceByUUID(UUIDS.SERVICE_MIBAND1)
self.svc_2 = self.getServiceByUUID(UUIDS.SERVICE_MIBAND2)
self.svc_heart = self.getServiceByUUID(UUIDS.SERVICE_HEART_RATE)
self.svc_alert = self.getServiceByUUID(UUIDS.SERVICE_ALERT)
self._char_alert = self.svc_alert.getCharacteristics(UUIDS.CHARACTERISTIC_ALERT)[0]
self._char_auth = self.svc_2.getCharacteristics(UUIDS.CHARACTERISTIC_AUTH)[0]
self._desc_auth = self._char_auth.getDescriptors(forUUID=UUIDS.NOTIFICATION_DESCRIPTOR)[0]
self._char_heart_ctrl = self.svc_heart.getCharacteristics(UUIDS.CHARACTERISTIC_HEART_RATE_CONTROL)[0]
self._char_heart_measure = self.svc_heart.getCharacteristics(UUIDS.CHARACTERISTIC_HEART_RATE_MEASURE)[0]
self._heart_measure_handle = self._char_heart_measure.getHandle() + 1
# Recorded information
self._char_fetch = self.getCharacteristics(uuid=UUIDS.CHARACTERISTIC_FETCH)[0]
self._desc_fetch = self._char_fetch.getDescriptors(forUUID=UUIDS.NOTIFICATION_DESCRIPTOR)[0]
self._char_activity = self.getCharacteristics(uuid=UUIDS.CHARACTERISTIC_ACTIVITY_DATA)[0]
self._desc_activity = self._char_activity.getDescriptors(forUUID=UUIDS.NOTIFICATION_DESCRIPTOR)[0]
# Sensor characteristics and handles/descriptors
self._char_hz = self.svc_1.getCharacteristics(UUIDS.CHARACTERISTIC_HZ)[0]
self._hz_handle = self._char_hz.getHandle() + 1
self._char_sensor = self.svc_1.getCharacteristics(UUIDS.CHARACTERISTIC_SENSOR)[0]
self._sensor_handle = self._char_sensor.getHandle() + 1
self._char_steps = self.svc_1.getCharacteristics(UUIDS.CHARACTERISTIC_STEPS)[0]
self._steps_handle = self._char_steps.getHandle() + 1
self._auth_notif(True)
self.activity_notif_enabled = False
self.waitForNotifications(0.1)
self.setDelegate( Delegate(self) )
def generateAuthKey(self):
if(self.auth_key):
return struct.pack('<18s',b'\x01\x00'+ self.auth_key)
def _auth_notif(self, enabled):
if enabled:
self._log.info("Enabling Auth Service notifications status...")
self._desc_auth.write(self.start_bytes, True)
elif not enabled:
self._log.info("Disabling Auth Service notifications status...")
self._desc_auth.write(self.stop_bytes, True)
else:
self._log.error("Something went wrong while changing the Auth Service notifications status...")
def _auth_previews_data_notif(self, enabled):
if enabled:
self._log.info("Enabling Fetch Char notifications status...")
self._desc_fetch.write(self.start_bytes, True)
self._log.info("Enabling Activity Char notifications status...")
self._desc_activity.write(self.start_bytes, True)
self.activity_notif_enabled = True
else:
self._log.info("Disabling Fetch Char notifications status...")
self._desc_fetch.write(self.stop_bytes, True)
self._log.info("Disabling Activity Char notifications status...")
self._desc_activity.write(self.stop_bytes, True)
self.activity_notif_enabled = False
def initialize(self):
self._req_rdn()
while True:
self.waitForNotifications(0.1)
if self.state == AUTH_STATES.AUTH_OK:
self._log.info('Initialized')
self._auth_notif(False)
return True
elif self.state is None:
continue
self._log.error(self.state)
return False
def _req_rdn(self):
self._log.info("Requesting random number...")
self._char_auth.write(self._send_rnd_cmd)
self.waitForNotifications(self.timeout)
def _send_enc_rdn(self, data):
self._log.info("Sending encrypted random number")
cmd = self._send_enc_key + self._encrypt(data)
send_cmd = struct.pack('<18s', cmd)
self._char_auth.write(send_cmd)
self.waitForNotifications(self.timeout)
def _encrypt(self, message):
aes = AES.new(self.auth_key, AES.MODE_ECB)
return aes.encrypt(message)
def _get_from_queue(self, _type):
try:
res = self.queue.get(False)
except Empty:
return None
if res[0] != _type:
self.queue.put(res)
return None
return res[1]
def _parse_queue(self):
while True:
try:
res = self.queue.get(False)
_type = res[0]
if self.heart_measure_callback and _type == QUEUE_TYPES.HEART:
self.heart_measure_callback(self._parse_heart_measure(res[1]))
elif self.gyro_raw_callback and _type == QUEUE_TYPES.RAW_ACCEL:
self.gyro_raw_callback(self._parse_raw_gyro(res[1]))
except Empty:
break
def _parse_heart_measure(self, bytes):
res = struct.unpack('bb', bytes)[1]
return_tuple = ["HR", res]
return return_tuple
def _parse_raw_gyro(self, bytes):
res = []
for i in xrange(3):
g = struct.unpack('hhh', bytes[2 + i * 6:8 + i * 6])
res.append({'x': g[0], 'y': g[1], 'z': g[2]})
return_tuple = ["GYRO", res]
return return_tuple
def send_vibration(self, duration):
duration_time = time.time()
pulse_time = time.time()
vibro_start_value = 30
#pulse_value = 100
duration = 20
vibro_current_value = vibro_start_value
while True:
if (time.time() - duration_time) >= duration:
print ("Stopping vibration")
self._char_alert.write(b'\x00\x00\x00\x00\x00\x00', withResponse=False)
break
else:
if ((time.time() - pulse_time)*1000) >= vibro_current_value:
pulse_time = time.time()
self._char_alert.write(b'\xff' + (vibro_current_value).to_bytes(1, 'big') + b'\x00\x00\x00\x01', withResponse=False)
vibro_current_value += 1
print (vibro_current_value)
if vibro_current_value > 255:
vibro_current_value = vibro_start_value
def send_gyro_start(self):
if not self.gyro_started_flag:
self._log.info("Starting gyro...")
self.writeCharacteristic(self._sensor_handle, self.start_bytes, withResponse=True)
self.writeCharacteristic(self._steps_handle, self.start_bytes, withResponse=True)
self.writeCharacteristic(self._hz_handle, self.start_bytes, withResponse=True)
self.gyro_started_flag = True
self._char_sensor.write(b'\x01' + bytes([self.gyro_sensitivity]) + b'\x19', withResponse=False)
self.writeCharacteristic(self._sensor_handle, self.stop_bytes, withResponse=True)
self._char_sensor.write(b'\x02', withResponse=False)
def send_heart_measure_start(self):
self._log.info("Starting heart measure...")
# stop heart monitor continues & manual
self._char_heart_ctrl.write(b'\x15\x02\x00', True)
self._char_heart_ctrl.write(b'\x15\x01\x00', True)
# enable heart monitor notifications
self.writeCharacteristic(self._heart_measure_handle, self.start_bytes, withResponse=True)
# start heart monitor continues
self._char_heart_ctrl.write(b'\x15\x01\x01', True)
def send_heart_measure_keepalive(self):
self._char_heart_ctrl.write(b'\x16', True)
def start_heart_and_gyro(self, callback):
self.heart_measure_callback = callback
self.gyro_raw_callback = callback
self.send_gyro_start()
self.send_heart_measure_start()
heartbeat_time = time.time()
while True:
self.waitForNotifications(0.5)
self._parse_queue()
if (time.time() - heartbeat_time) >= 12:
heartbeat_time = time.time()
self.send_heart_measure_keepalive()
self.send_gyro_start()