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base.py
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base.py
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import struct
import time
import logging
from datetime import datetime, timedelta
from Crypto.Cipher import AES
from Queue import Queue, Empty
from bluepy.btle import Peripheral, DefaultDelegate, ADDR_TYPE_RANDOM, BTLEException
from constants import UUIDS, AUTH_STATES, ALERT_TYPES, QUEUE_TYPES
class AuthenticationDelegate(DefaultDelegate):
"""This Class inherits DefaultDelegate to handle the authentication process."""
def __init__(self, device):
DefaultDelegate.__init__(self)
self.device = device
def handleNotification(self, hnd, data):
# Debug purposes
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
elif data[:3] == b'\x10\x03\x04':
self.device.status = AUTH_STATES.ENCRIPTION_KEY_FAILED
self.device._send_key()
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:
# Not sure about this, need test
if len(data) == 20 and struct.unpack('b', data[0])[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.
# It can trigger the communication.
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.device._char_fetch.write(b'\x02', False)
elif data[:3] == b'\x10\x02\x01':
self.device.active = False
return
else:
print("Unexpected data on handle " + str(hnd) + ": " + str(data.encode("hex")))
return
# The activity characteristic sends the previews recorded information
# from one given timestamp until now.
elif hnd == self.device._char_activity.getHandle():
if len(data) % 4 is not 1:
if self.device.last_timestamp > datetime.now() - timedelta(minutes=1):
self.device.active = False
return
print("Trigger more communication")
time.sleep(1)
t = self.device.last_timestamp + timedelta(minutes=1)
self.device.start_get_previews_data(t)
else:
pkg = self.device.pkg
self.device.pkg += 1
i = 1
while i < len(data):
index = int(pkg) * 4 + (i - 1) / 4
timestamp = self.device.first_timestamp + timedelta(minutes=index)
self.device.last_timestamp = timestamp
category = int.from_bytes(data[i:i + 1], byteorder='little')
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]
print("{}: category: {}; acceleration {}; steps {}; heart rate {};".format(
timestamp.strftime('%d.%m - %H:%M'),
category,
intensity,
steps,
heart_rate)
)
i += 4
d = datetime.now().replace(second=0, microsecond=0) - timedelta(minutes=1)
if timestamp == d:
self.device.active = False
return
else:
self.device._log.error("Unhandled Response " + hex(hnd) + ": " +
str(data.encode("hex")) + " len:" + str(len(data)))
class MiBand2(Peripheral):
# _KEY = b'\x30\x31\x32\x33\x34\x35\x36\x37\x38\x39\x40\x41\x42\x43\x44\x45'
# _send_key_cmd = struct.pack('<18s', b'\x01\x08' + _KEY)
# _send_rnd_cmd = struct.pack('<2s', b'\x02\x08')
# _send_enc_key = struct.pack('<2s', b'\x03\x08')
_KEY = b'\xf5\xd2\x29\x87\x65\x0a\x1d\x82\x05\xab\x82\xbe\xb9\x38\x59\xcf'
_send_key_cmd = struct.pack('<18s', b'\x01\x00' + _KEY)
_send_rnd_cmd = struct.pack('<2s', b'\x02\x00')
_send_enc_key = struct.pack('<2s', b'\x03\x00')
pkg = 0
def __init__(self, mac_address, 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_RANDOM)
self._log.info('Connected')
self.timeout = timeout
self.mac_address = mac_address
self.state = None
self.queue = Queue()
self.heart_measure_callback = None
self.heart_raw_callback = None
self.accel_raw_callback = None
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._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]
# 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]
# Enable auth service notifications on startup
self._auth_notif(True)
# Let MiBand2 to settle
self.waitForNotifications(0.1)
# Auth helpers ######################################################################
def _auth_notif(self, enabled):
if enabled:
self._log.info("Enabling Auth Service notifications status...")
self._desc_auth.write(b"\x01\x00", True)
elif not enabled:
self._log.info("Disabling Auth Service notifications status...")
self._desc_auth.write(b"\x00\x00", 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(b"\x01\x00", True)
self._log.info("Enabling Activity Char notifications status...")
self._desc_activity.write(b"\x01\x00", True)
elif not enabled:
self._log.info("Disabling Fetch Char notifications status...")
self._desc_fetch.write(b"\x00\x00", True)
self._log.info("Disabling Activity Char notifications status...")
self._desc_activity.write(b"\x00\x00", True)
else:
self._log.error("Something went wrong while changing the Fetch and Activity notifications status...")
def _encrypt(self, message):
aes = AES.new(self._KEY, AES.MODE_ECB)
return aes.encrypt(message)
def _send_key(self):
self._log.info("Sending Key...")
self._char_auth.write(self._send_key_cmd)
self.waitForNotifications(self.timeout)
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)
# Parse helpers ###################################################################
def _parse_raw_accel(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], 'wtf': g[2]})
# WTF
# if len(bytes) == 20 and struct.unpack('b', bytes[0])[0] == 2:
# print struct.unpack('B', bytes[1])
# print "Accel x: %s y: %s z: %s" % struct.unpack('hhh', bytes[2:8])
# print "Accel x: %s y: %s z: %s" % struct.unpack('hhh', bytes[8:14])
# print "Accel x: %s y: %s z: %s" % struct.unpack('hhh', bytes[14:])
return res
def _parse_raw_heart(self, bytes):
res = struct.unpack('HHHHHHH', bytes[2:])
return res
def _parse_date(self, bytes):
year = struct.unpack('h', bytes[0:2])[0] if len(bytes) >= 2 else None
month = struct.unpack('b', bytes[2])[0] if len(bytes) >= 3 else None
day = struct.unpack('b', bytes[3])[0] if len(bytes) >= 4 else None
hours = struct.unpack('b', bytes[4])[0] if len(bytes) >= 5 else None
minutes = struct.unpack('b', bytes[5])[0] if len(bytes) >= 6 else None
seconds = struct.unpack('b', bytes[6])[0] if len(bytes) >= 7 else None
day_of_week = struct.unpack('b', bytes[7])[0] if len(bytes) >= 8 else None
fractions256 = struct.unpack('b', bytes[8])[0] if len(bytes) >= 9 else None
return {"date": datetime(*(year, month, day, hours, minutes, seconds)), "day_of_week": day_of_week, "fractions256": fractions256}
def _parse_battery_response(self, bytes):
level = struct.unpack('b', bytes[1])[0] if len(bytes) >= 2 else None
last_level = struct.unpack('b', bytes[19])[0] if len(bytes) >= 20 else None
status = 'normal' if struct.unpack('b', bytes[2])[0] == 0 else "charging"
datetime_last_charge = self._parse_date(bytes[11:18])
datetime_last_off = self._parse_date(bytes[3:10])
# WTF?
# struct.unpack('b', bytes[10])
# struct.unpack('b', bytes[18])
# print struct.unpack('b', bytes[10]), struct.unpack('b', bytes[18])
res = {
"status": status,
"level": level,
"last_level": last_level,
"last_level": last_level,
"last_charge": datetime_last_charge,
"last_off": datetime_last_off
}
return res
# Queue ###################################################################
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(struct.unpack('bb', res[1])[1])
elif self.heart_raw_callback and _type == QUEUE_TYPES.RAW_HEART:
self.heart_raw_callback(self._parse_raw_heart(res[1]))
elif self.accel_raw_callback and _type == QUEUE_TYPES.RAW_ACCEL:
self.accel_raw_callback(self._parse_raw_accel(res[1]))
except Empty:
break
# API ####################################################################
def initialize(self):
self.setDelegate(AuthenticationDelegate(self))
self._send_key()
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 authenticate(self):
self.setDelegate(AuthenticationDelegate(self))
self._req_rdn()
while True:
self.waitForNotifications(0.1)
if self.state == AUTH_STATES.AUTH_OK:
self._log.info('Authenticated')
return True
elif self.state is None:
continue
self._log.error(self.state)
return False
def get_battery_info(self):
char = self.svc_1.getCharacteristics(UUIDS.CHARACTERISTIC_BATTERY)[0]
return self._parse_battery_response(char.read())
def get_current_time(self):
char = self.svc_1.getCharacteristics(UUIDS.CHARACTERISTIC_CURRENT_TIME)[0]
return self._parse_date(char.read()[0:9])
def get_revision(self):
svc = self.getServiceByUUID(UUIDS.SERVICE_DEVICE_INFO)
char = svc.getCharacteristics(UUIDS.CHARACTERISTIC_REVISION)[0]
data = char.read()
revision = struct.unpack('9s', data[-9:])[0] if len(data) == 9 else None
return revision
def get_hrdw_revision(self):
svc = self.getServiceByUUID(UUIDS.SERVICE_DEVICE_INFO)
char = svc.getCharacteristics(UUIDS.CHARACTERISTIC_HRDW_REVISION)[0]
data = char.read()
revision = struct.unpack('8s', data[-8:])[0] if len(data) == 8 else None
return revision
def set_encoding(self, encoding="en_US"):
char = self.svc_1.getCharacteristics(UUIDS.CHARACTERISTIC_CONFIGURATION)[0]
packet = struct.pack('5s', encoding)
packet = b'\x06\x17\x00' + packet
return char.write(packet)
def set_heart_monitor_sleep_support(self, enabled=True, measure_minute_interval=1):
char_m = self.svc_heart.getCharacteristics(UUIDS.CHARACTERISTIC_HEART_RATE_MEASURE)[0]
char_d = char_m.getDescriptors(forUUID=UUIDS.NOTIFICATION_DESCRIPTOR)[0]
char_d.write(b'\x01\x00', True)
self._char_heart_ctrl.write(b'\x15\x00\x00', True)
# measure interval set to off
self._char_heart_ctrl.write(b'\x14\x00', True)
if enabled:
self._char_heart_ctrl.write(b'\x15\x00\x01', True)
# measure interval set
self._char_heart_ctrl.write(b'\x14' + str(measure_minute_interval).encode(), True)
char_d.write(b'\x00\x00', True)
def get_serial(self):
svc = self.getServiceByUUID(UUIDS.SERVICE_DEVICE_INFO)
char = svc.getCharacteristics(UUIDS.CHARACTERISTIC_SERIAL)[0]
data = char.read()
serial = struct.unpack('12s', data[-12:])[0] if len(data) == 12 else None
return serial
def get_steps(self):
char = self.svc_1.getCharacteristics(UUIDS.CHARACTERISTIC_STEPS)[0]
a = char.read()
steps = struct.unpack('h', a[1:3])[0] if len(a) >= 3 else None
meters = struct.unpack('h', a[5:7])[0] if len(a) >= 7 else None
fat_gramms = struct.unpack('h', a[2:4])[0] if len(a) >= 4 else None
# why only 1 byte??
callories = struct.unpack('b', a[9])[0] if len(a) >= 10 else None
return {
"steps": steps,
"meters": meters,
"fat_gramms": fat_gramms,
"callories": callories
}
def send_alert(self, _type):
svc = self.getServiceByUUID(UUIDS.SERVICE_ALERT)
char = svc.getCharacteristics(UUIDS.CHARACTERISTIC_ALERT)[0]
char.write(_type)
def get_heart_rate_one_time(self):
# stop continous
self._char_heart_ctrl.write(b'\x15\x01\x00', True)
# stop manual
self._char_heart_ctrl.write(b'\x15\x02\x00', True)
# start manual
self._char_heart_ctrl.write(b'\x15\x02\x01', True)
res = None
while not res:
self.waitForNotifications(self.timeout)
res = self._get_from_queue(QUEUE_TYPES.HEART)
rate = struct.unpack('bb', res)[1]
return rate
def start_heart_rate_realtime(self, heart_measure_callback):
char_m = self.svc_heart.getCharacteristics(UUIDS.CHARACTERISTIC_HEART_RATE_MEASURE)[0]
char_d = char_m.getDescriptors(forUUID=UUIDS.NOTIFICATION_DESCRIPTOR)[0]
char_ctrl = self.svc_heart.getCharacteristics(UUIDS.CHARACTERISTIC_HEART_RATE_CONTROL)[0]
self.heart_measure_callback = heart_measure_callback
# stop heart monitor continues & manual
char_ctrl.write(b'\x15\x02\x00', True)
char_ctrl.write(b'\x15\x01\x00', True)
# enable heart monitor notifications
char_d.write(b'\x01\x00', True)
# start hear monitor continues
char_ctrl.write(b'\x15\x01\x01', True)
t = time.time()
while True:
self.waitForNotifications(0.5)
self._parse_queue()
# send ping request every 12 sec
if (time.time() - t) >= 12:
char_ctrl.write(b'\x16', True)
t = time.time()
def start_raw_data_realtime(self, heart_measure_callback=None, heart_raw_callback=None, accel_raw_callback=None):
char_m = self.svc_heart.getCharacteristics(UUIDS.CHARACTERISTIC_HEART_RATE_MEASURE)[0]
char_d = char_m.getDescriptors(forUUID=UUIDS.NOTIFICATION_DESCRIPTOR)[0]
char_ctrl = self.svc_heart.getCharacteristics(UUIDS.CHARACTERISTIC_HEART_RATE_CONTROL)[0]
if heart_measure_callback:
self.heart_measure_callback = heart_measure_callback
if heart_raw_callback:
self.heart_raw_callback = heart_raw_callback
if accel_raw_callback:
self.accel_raw_callback = accel_raw_callback
char_sensor = self.svc_1.getCharacteristics(UUIDS.CHARACTERISTIC_SENSOR)[0]
# char_sens_d = char_sensor1.getDescriptors(forUUID=UUIDS.NOTIFICATION_DESCRIPTOR)[0]
# char_sensor2 = self.svc_1.getCharacteristics('000000010000351221180009af100700')[0]
# char_sens_d2 = char_sensor2.getDescriptors(forUUID=UUIDS.NOTIFICATION_DESCRIPTOR)[0]
# char_sensor3 = self.svc_1.getCharacteristics('000000070000351221180009af100700')[0]
# char_sens_d3 = char_sensor3.getDescriptors(forUUID=UUIDS.NOTIFICATION_DESCRIPTOR)[0]
# char_sens_d1.write(b'\x01\x00', True)
# char_sens_d2.write(b'\x01\x00', True)
# char_sensor2.write(b'\x01\x03\x19')
# char_sens_d2.write(b'\x00\x00', True)
# char_d.write(b'\x01\x00', True)
# char_ctrl.write(b'\x15\x01\x01', True)
# char_sensor2.write(b'\x02')
# stop heart monitor continues & manual
char_ctrl.write(b'\x15\x02\x00', True)
char_ctrl.write(b'\x15\x01\x00', True)
# WTF
# char_sens_d1.write(b'\x01\x00', True)
# enabling accelerometer & heart monitor raw data notifications
char_sensor.write(b'\x01\x03\x19')
# IMO: enablee heart monitor notifications
char_d.write(b'\x01\x00', True)
# start hear monitor continues
char_ctrl.write(b'\x15\x01\x01', True)
# WTF
char_sensor.write(b'\x02')
t = time.time()
while True:
self.waitForNotifications(0.5)
self._parse_queue()
# send ping request every 12 sec
if (time.time() - t) >= 12:
char_ctrl.write(b'\x16', True)
t = time.time()
def stop_realtime(self):
char_m = self.svc_heart.getCharacteristics(UUIDS.CHARACTERISTIC_HEART_RATE_MEASURE)[0]
char_d = char_m.getDescriptors(forUUID=UUIDS.NOTIFICATION_DESCRIPTOR)[0]
char_ctrl = self.svc_heart.getCharacteristics(UUIDS.CHARACTERISTIC_HEART_RATE_CONTROL)[0]
char_sensor1 = self.svc_1.getCharacteristics(UUIDS.CHARACTERISTIC_HZ)[0]
char_sens_d1 = char_sensor1.getDescriptors(forUUID=UUIDS.NOTIFICATION_DESCRIPTOR)[0]
char_sensor2 = self.svc_1.getCharacteristics(UUIDS.CHARACTERISTIC_SENSOR)[0]
# stop heart monitor continues
char_ctrl.write(b'\x15\x01\x00', True)
char_ctrl.write(b'\x15\x01\x00', True)
# IMO: stop heart monitor notifications
char_d.write(b'\x00\x00', True)
# WTF
char_sensor2.write(b'\x03')
# IMO: stop notifications from sensors
char_sens_d1.write(b'\x00\x00', True)
self.heart_measure_callback = None
self.heart_raw_callback = None
self.accel_raw_callback = None
def start_get_previews_data(self, start_timestamp):
self._auth_previews_data_notif(True)
self.waitForNotifications(0.1)
print("Trigger activity communication")
year = struct.pack("<H", start_timestamp.year)
month = struct.pack("<H", start_timestamp.month)[0]
day = struct.pack("<H", start_timestamp.day)[0]
hour = struct.pack("<H", start_timestamp.hour)[0]
minute = struct.pack("<H", start_timestamp.minute)[0]
ts = year + month + day + hour + minute
trigger = b'\x01\x01' + ts + b'\x00\x08'
self._char_fetch.write(trigger, False)
self.active = True