Ejemplo n.º 1
0
def getBluetoothNetworks():
    bl_networks = {}
    tmp_mac = []
    bl_index = 0
    nb_scan = 0

    bl = Bluetooth()
    while nb_scan < NB_SCAN_BL:
        print("scan : %d" % nb_scan)
        bl.start_scan(10)  #Duration of scan to be define !!!!
        while bl.isscanning():
            adv = bl.get_adv()
            if adv:
                if adv.mac not in tmp_mac:
                    tmp_mac.append(adv.mac)
                    bl_networks[str(bl_index)] = {
                        "id": str(ubinascii.hexlify(adv.mac, ":"))[2:19],
                        "rssi": str(adv.rssi)
                    }
                    print("NAME = %s -- MAC : %s -- RSSI = %d" %
                          (bl.resolve_adv_data(adv.data, bl.ADV_NAME_CMPL),
                           ubinascii.hexlify(adv.mac, ":"), adv.rssi))
                    bl_index += 1
        nb_scan += 1
        tmp_mac = []
        utime.sleep(BL_DELAY_SCAN_SEC)

    print("getBluetoothNetworks - Done!")
    return bl_networks
Ejemplo n.º 2
0
def find_ble(testCase=None):
    bluetooth = Bluetooth()
    try:
        if isinstance(testCase, Exception):
            raise testCase
        bluetooth.start_scan(5)
        while bluetooth.isscanning():
            adv = bluetooth.get_adv()
            if adv:
                mac = ubinascii.hexlify(adv.mac)
                if mac == bytearray(GATT_CLIENT_MAC):
                    #name = bluetooth.resolve_adv_data(adv.data, Bluetooth.ADV_NAME_CMPL)
                    #print(mac, name, adv.rssi)
                    if not testCase == 'Not found':
                        rssi = adv.rssi
                        bluetooth.stop_scan()
                        break
        else:
            rssi = -10000
        bluetooth.deinit()
    except Exception as e:
        return -10000

    if testCase is not None and not testCase == 'Not found':
        rssi = testCase
    if rssi >= 0:
        return -10000

    return rssi
Ejemplo n.º 3
0
    def isOwnerNearby(self):
        '''
        Logic here checks if a known BLE device is broadcasting nearby.
        If they are, return true. Else, return false
        '''
        # TODO remove
        return False
        bt = Bluetooth()
        bt.start_scan(ConfigBluetooth.SCAN_ALLOW_TIME)  # Scans for 10 seconds

        while bt.isscanning():
            adv = bt.get_adv()
            if adv and binascii.hexlify(adv.mac) == ConfigBluetooth.MAC_ADDR:
                try:
                    if self.debug:
                        print("Owner device found: {} Mac addr {}".format(
                            bt.resolve_adv_data(adv.data,
                                                Bluetooth.ADV_NAME_CMPL),
                            ConfigBluetooth.MAC_ADDR))
                    conn = bt.connect(adv.mac)
                    time.sleep(0.05)
                    conn.disconnect()
                    bt.stop_scan()
                except Exception:
                    bt.stop_scan()

                return True

            time.sleep(0.050)

        return False
class BluetoothWorker:
    def __init__(self, devices):
        self.devices = devices
        self.bt = Bluetooth()
        if self.bt.isscanning():
            self.bt.stop_scan()
        self.bt.start_scan(-1)

    def get_adv(self):
        while True:
            adv = self.bt.get_adv()
            if adv:
                self.devices.add_mac(adv.mac, Devices.BLUETOOTH)
            else:
                break
Ejemplo n.º 5
0
def bluetooth_scanner():
    global ble_thread
    try:
        while True:
            try:
                tools.debug('BLE - Starting BLE scanner, RSSI: ' + str(int(globalVars.RSSI_NEAR_THRESHOLD,16) - 256) + " - RTC: " + str(int(utime.time())) + " - REFRESH: " + str(globalVars.MAX_REFRESH_TIME) + " - SCAN: " + str(int(globalVars.BLE_SCAN_PERIOD)) + " - SLEEP: " + str(int(globalVars.STANDBY_PERIOD)) + " - DEBUG: " + str(globalVars.debug_cc) ,'v')
                ble_thread = True
                bluetooth = Bluetooth()
                bluetooth.tx_power(Bluetooth.TX_PWR_SCAN, Bluetooth.TX_PWR_P9)
                bluetooth.start_scan(int(globalVars.BLE_SCAN_PERIOD))
                while bluetooth.isscanning():
                    adv = bluetooth.get_adv()
                    if adv:
                        if 'WILOC_01' in str(bluetooth.resolve_adv_data(adv.data, Bluetooth.ADV_NAME_CMPL)):
                            data_raw = str(ubinascii.hexlify(adv.data).decode('utf-8'))
                            if globalVars.MAC_TYPE == "LORA":
                                mac_proc = data_raw[34:50] # LoRa MAC
                            elif globalVars.MAC_TYPE == "BLE":
                                mac_proc = str(ubinascii.hexlify(adv.mac).decode('utf-8')) # MAC BLE
                            tools.debug('Name: '+ str(bluetooth.resolve_adv_data(adv.data, Bluetooth.ADV_NAME_CMPL)) +' MAC: '+ str(mac_proc)+ ' RSSI: ' + str(adv.rssi) + ' DT: '+ str(int(utime.time())) +' RAW: ' + data_raw,'vvv')
                            if mac_proc not in globalVars.mac_scanned:
                                tools.debug('Step 1 - New device detected: ' + str(mac_proc),'vv')
                                globalVars.mac_scanned.append(mac_proc)
                            if adv.rssi >= (int(globalVars.RSSI_NEAR_THRESHOLD,16) - 256):  
                                wilocMain.checkListType(str(mac_proc), globalVars.ALARM_LIST_TYPE)
                            globalVars.scanned_frames.append(Device(addr=mac_proc,rssi=adv.rssi, raw=data_raw))
                        elif 'WIL_C01' in str(bluetooth.resolve_adv_data(adv.data, Bluetooth.ADV_NAME_CMPL)):
                            data_raw = str(ubinascii.hexlify(adv.data).decode('utf-8'))
                            mac_proc = str(ubinascii.hexlify(adv.mac).decode('utf-8')) # MAC BLE
                            #tools.debug('BLE Name: '+ str(bluetooth.resolve_adv_data(adv.data, Bluetooth.ADV_NAME_CMPL)) +' - BLE MAC: '+ str(mac_proc)+ ' - RSSI: ' + str(adv.rssi) + ' - DT: '+ str(int(utime.time())) +' - RAW: ' + data_raw,'vvv')
                            if mac_proc not in globalVars.mac_scanned:
                                tools.debug('Step 1 - BLE New device detected: ' + str(mac_proc),'vv')
                                globalVars.mac_scanned.append(mac_proc)
                            if adv.rssi >= (int(globalVars.RSSI_NEAR_THRESHOLD,16) - 256):  
                                wilocMain.checkListType(str(mac_proc), globalVars.ALARM_LIST_TYPE)
                            globalVars.scanned_frames.append(Device(addr=mac_proc,rssi=adv.rssi, raw=data_raw))

                tools.debug('BLE - Stopping BLE scanner ' + str(int(utime.time())),'v')
                tools.sleepWiloc(int(globalVars.STANDBY_PERIOD))
            except BaseException as ee1:
                checkError("Error scanning Bluetooth",ee1)
                tools.sleepWiloc(int(globalVars.STANDBY_PERIOD))
    except BaseException as e:
        checkError("Error thread Bluetooth", e)
        ble_thread = False
    finally:
        ble_thread = False
        _thread.start_new_thread(bluetooth_scanner,())
def main():
    first = True
    while True:
        if first == True:
            om2m.createApplication('http://smart-iot.lan.uow.edu.au:8181/~/in-cse', 'admin:admin', 'LOPY5')
            om2m.createContainer('http://smart-iot.lan.uow.edu.au:8181/~/in-cse/in-name/LOPY5', 'admin:admin', 'WiFi_Connectivity')
            om2m.subscribeResource('http://smart-iot.lan.uow.edu.au:8181/~/in-cse/in-name/LOPY5/WiFi_Connectivity', 'admin:admin', 'lopy5_wifi_sub', 'http://smart-iot.lan.uow.edu.au:8081/monitorLopy5Wifi')
            

        wlan = WLAN()
        wlan.init(mode=WLAN.STA)
        wfResults = wlan.scan()

        wifiCon = getWifiConnectivity(wfResults)
        print('WiFi Connectivity:')
        print(wifiCon)
        print(len(wifiCon['names']))
        wifiData = {
            'Networks': wifiCon['names'],
            'MAC Addresses': wifiCon['macs'],
            'Signal Strengths': wifiCon['strengths']
        }
        om2m.createContentInstance('http://smart-iot.lan.uow.edu.au:8181/~/in-cse/in-name/LOPY5/WiFi_Connectivity', 'admin:admin', json.dumps(wifiData) )

        if first == True:
            om2m.createContainer('http://smart-iot.lan.uow.edu.au:8181/~/in-cse/in-name/LOPY5', 'admin:admin', 'BT_Connectivity')
            om2m.subscribeResource('http://smart-iot.lan.uow.edu.au:8181/~/in-cse/in-name/LOPY5/BT_Connectivity', 'admin:admin', 'lopy5_bt_sub', 'http://smart-iot.lan.uow.edu.au:8081/monitorLopy5BT')
            first = False

        bluetooth = Bluetooth()
        bluetooth.start_scan(3)
        while bluetooth.isscanning():
            time.sleep(1)
        btResults = bluetooth.get_advertisements()
        btCon = getBTConnectivity(btResults)
        print('BT Connectivity:')
        print(btCon)
        btData = {
            'MAC Addresses': btCon['macs'],
            'Signal Strengths': btCon['strengths']
        }
        om2m.createContentInstance('http://smart-iot.lan.uow.edu.au:8181/~/in-cse/in-name/LOPY5/BT_Connectivity', 'admin:admin', json.dumps(btData) )
        time.sleep(30)
Ejemplo n.º 7
0
def isBTDeviceNearby():
    bt = Bluetooth()

    while True:
        print("Scanning for owner BT device nearby...")
        bt.start_scan(10)  # Scans for 10 seconds

        while bt.isscanning():
            adv = bt.get_adv()
            if adv and binascii.hexlify(adv.mac) == ConfigBluetooth.MAC_ADDR:
                try:
                    print("Owner device found: {} Mac addr {}".format(
                        bt.resolve_adv_data(adv.data, Bluetooth.ADV_NAME_CMPL),
                        ConfigBluetooth.MAC_ADDR))
                    conn = bt.connect(adv.mac)
                    time.sleep(0.05)
                    conn.disconnect()
                    bt.stop_scan()
                except Exception as e:
                    print("Exception {}".format(e))
                    bt.stop_scan()
                    break
            else:
                time.sleep(0.050)
Ejemplo n.º 8
0
# org.bluetooth.characteristic.battery_level_BS_CHAR = (UUID(0x2A19), FLAG_READ | FLAG_NOTIFY,)
# org.bluetooth.service.weight_scale - WS_WS_INT = 0x181D
# org.bluetooth.characteristic.weight_measurement_WS_CHAR = (UUID(0x2A9D), FLAG_READ | FLAG_NOTIFY,)
# org.bluetooth.service.environmental_sensing - ES _ES_INT = 0x181A

from network import Bluetooth
import time
import struct

print('Create BT')
bluetooth = Bluetooth()
print('Scanning...')
bluetooth.start_scan(2)  # start scanning with no timeout
time.sleep(2.1)

if not bluetooth.isscanning():
    for adv in bluetooth.get_advertisements():
        name = bluetooth.resolve_adv_data(adv.data, Bluetooth.ADV_NAME_CMPL)
        if name == 'HEN':
            mac = adv.mac

            try:
                print('Connecting to HEN')
                conn = bluetooth.connect(adv.mac)
                time.sleep(0.05)
                services = conn.services()
                for service in services:
                    time.sleep(0.050)
                    #print('Service: ',service.uuid())
                    #print('Chars: ',service.characteristics())
                    uuid = service.uuid()
Ejemplo n.º 9
0
import ubinascii
import time
from network import Bluetooth

########################################################
#     Scan for bluetooth signals and retrieve data     #
########################################################
ids = []
bluetooth = Bluetooth()
bluetooth.start_scan(20)
while bluetooth.isscanning():
    adv = bluetooth.get_adv()
    if adv:
        mfg_data = bluetooth.resolve_adv_data(adv.data,
                                              Bluetooth.ADV_MANUFACTURER_DATA)

        if mfg_data:
            if (ubinascii.hexlify(mfg_data) == str.encode(
                    "590002150112233445566778899aabbccddeeff0dd907baabb")):
                print("you have arrived", ubinascii.hexlify(mfg_data))
                break
            else:
                if ubinascii.hexlify(mfg_data) not in ids:
                    ids.append(ubinascii.hexlify(mfg_data))
                    print(ubinascii.hexlify(mfg_data), " strength ", adv.rssi)
def BLEClient():
    #Description: check if the BLE server is set up by another LoPy
    #Note: for convention reason, the LoPy server name will be "LoPyServer"+device_id
    def checkValidServer(server_name):
        if (server_name == None): return False
        else:
            #check if server_name contains "LoPyServer"
            if (re.match('LoPyServer*', server_name)):
                return True
            else:
                return False

    global rec_msg
    ###### Third, set up BLE client service ######
    bluetooth_client = Bluetooth()
    bluetooth_client.start_scan(10)
    #server_name1 = bluetooth_client.resolve_adv_data(adv.data, Bluetooth.ADV_NAME_CMPL)

    counter = 50
    #while True:
    while counter > 0:

        #Gets an named tuple with the advertisement data received during the scanning.
        #The structure is (mac, addr_type, adv_type, rssi, data)
        adv = bluetooth_client.get_adv()
        #servermac = ''#save the serer mac
        #use resolve_adv_data to resolve the 31 bytes of the advertisement message
        #Here is problem: when disconnect from server, then adv will always be null...

        #if get a valid advertisement from one server
        if adv:
            server_name = bluetooth_client.resolve_adv_data(
                adv.data, Bluetooth.ADV_NAME_CMPL)
            #print(server_name)
            if checkValidServer(server_name):
                try:
                    #Opens a BLE connection with the device specified by the mac_addr argument
                    #This function blocks until the connection succeeds or fails.
                    #print(adv.mac)
                    #global servermac#change servermac to global
                    #servermac = adv.mac
                    #counter += 1
                    conn = bluetooth_client.connect(adv.mac)
                    #print('connected?',conn.isconnected())
                    services = conn.services()
                    #print('This is service',services)
                    #print(services)
                    #Yunwei - it seems that only when the type of uuid is bytes then could read the data from server
                    for service in services:
                        time.sleep(0.050)
                        if type(service.uuid()) == bytes:
                            chars = service.characteristics()
                            for char in chars:
                                #check if the character properties is PROP_READ
                                if (char.properties() & Bluetooth.PROP_READ):
                                    print('char {} value = {}'.format(
                                        char.uuid(), char.read()))
                                    #create lora msg
                                    rec_msg = str(char.read())
                                    counter -= 1
                                    #Use LoRa to send the data out
                                    #s.send(char.read())
                                    time.sleep(5)
                    #Yunwei
                    conn.disconnect()
                    print('connected?', conn.isconnected())
                    #break
                    time.sleep(3)
                    gc.collect()
                    bluetooth_client.start_scan(10)
                except:
                    print(
                        "Error while connecting or reading from the BLE device"
                    )
                    #break
                    time.sleep(1)
                    if (bluetooth_client.isscanning()):
                        bluetooth_client.stop_scan()
                        bluetooth_client.deinit()
                        time.sleep(1)
                        bluetooth_client.init()
                        time.sleep(1)
                        #init again
                        #bluetooth_client.init(id=0, mode=Bluetooth.BLE, antenna=None)
                        bluetooth_client.start_scan(10)
                    else:
                        bluetooth_client.deinit()
                        time.sleep(1)
                        bluetooth_client.init()
                        time.sleep(1)
                        bluetooth_client.start_scan(10)
    bluetooth_client.stop_scan()
    bluetooth_client.deinit()
Ejemplo n.º 11
0
pycom.heartbeat(False)

#initialize bluetooth
bluetooth = Bluetooth()

MacAddressList = []
MacAddressL = []

whiteList = [b'c2516b8e459d', b'f00f695ff143', b'c538524c4d77']
mapDict = {whiteList[0]: 'Tag1', whiteList[1]: 'Tag2', whiteList[2]: 'Tag3'}

bluetooth.start_scan(20)

while True:
    #Retrieves mac adresses in the allocated time
    while bluetooth.isscanning():
        adv = bluetooth.get_adv()

        #CHANGE KONTAKT TO THE ADV NAME OF THE BLE TAGS YOU ARE USING
        if adv and bluetooth.resolve_adv_data(
                adv.data, Bluetooth.ADV_NAME_CMPL) == 'Kontakt':
            print(ubinascii.hexlify(adv.mac))
            MacAddressList.append(ubinascii.hexlify(adv.mac))
            MacAddressList = [x for x in MacAddressList if x in whiteList]
            MacAddressList = list(set(MacAddressList))
            MacAddressL = [mapDict.get(n, n) for n in MacAddressList]
            MacAddressString = ' '.join(map(str, MacAddressL))
            data_out = json.dumps(MacAddressString)
            print("encoded" + data_out)
            data_in = data_out
            Mac_in = json.loads(data_in)
Ejemplo n.º 12
0
bt = Bluetooth()
bt.start_scan(-1)

intervalloEsposizione = 0
numeroDiMisureSingole = 0
#assumerà valori sempre maggiori se permane lo stato (es ESITO 0 o 1), se cambia viene riportata a 0 elementi
tipoDiEsitoCorrente = 0
soglia = 5
#means che 10 secondi di intervallo minimo possono essere passati con MQTT ---> successivamente metteremo 30 (ossia un minuto)
#def char_notify_callback(char):
#char_value = (char.value())
#print("Got new char: {} value: {}".format(char.uuid(), char_value))

while True:
    print('Sono un while loopppp con esito di scan a ', bt.isscanning())
    adv = bt.get_adv()
    if adv and bt.resolve_adv_data(
            adv.data, Bluetooth.ADV_NAME_CMPL) == 'BLDG Arduino Nano 33 BLE':
        while True:
            try:
                conn = bt.connect(adv.mac)
                services = conn.services()
                for service in services:
                    time.sleep(
                        2
                    )  #attendo 2 sec per uniformarmi con i tempi di arduino
                    #if type(service.uuid()) == bytes:
                    #print('Reading chars from service = {}'.format(service.uuid()))
                    #else:
                    #print('Reading chars from service = %x' % service.uuid())
Ejemplo n.º 13
0
class BLEScanner(object):
    """ BLE scanner for beacons and tags data packages """
    def __init__(self, max_list_items=25):

        self._beacons = []
        self._tags = []

        self._max_list_items = max_list_items
        self._ble = None

    def start(self, timeout=-1):
        """ Start beacon scanning """

        log.info('Start scanning for beacons and tags')
        if self._ble is None:
            self._ble = Bluetooth()

        self._ble.start_scan(timeout)
        while self._ble.isscanning():
            self.beacon_data_collect()

    def stop(self):
        """ Stop BLE """
        log.info('Stop scanning for beacons and tags')
        if self._ble:
            self._ble.stop_scan()
            #self._ble.deinit()
            #self._ble = None

    def set_max_list_items(self, max_list_items):
        """ Set the max list items to return"""
        self._max_list_items = max_list_items

    def reset(self):
        """ Reset the retrieved beacon/tag list during scanning """
        log.info('Reset beacon/tag list')
        self._beacons[:] = []
        self._tags[:] = []

    @property
    def beacons(self):
        """ Return the beacons found """
        res = list(self._beacons)  # make a copy
        return res

    @property
    def tags(self):
        """ Return the tags found """
        res = list(self._tags)  # make a copy
        return res

    def beacon_data_collect(self):
        """ Collect the beacon data """

        adv = self._ble.get_adv()
        if adv:

            if self._ble.resolve_adv_data(adv.data,
                                          Bluetooth.ADV_NAME_CMPL) == "ITAG":

                binitag = binascii.hexlify(adv[0])
                tag = binitag.decode('UTF-8')

                if tag not in self._tags:
                    log.debug('Found tag [{}]', tag)
                    self._tags.append(tag)

            else:

                # try to get the complete name only works with ibeacons
                data = self._ble.resolve_adv_data(
                    adv.data, Bluetooth.ADV_MANUFACTURER_DATA)

                if data:
                    # try to get the manufacturer data (Apple's iBeacon data is sent here)
                    bindata = binascii.hexlify(data)
                    beacon = bindata.decode('UTF-8')

                    # Check if beacon is in list
                    if beacon not in self._beacons:
                        log.debug('Found beacon [{}]', beacon)
                        self._beacons.append(beacon)
Ejemplo n.º 14
0
def checkId():
    print("BEACON ID", beaconId)
    if beaconId != "":
        if str.encode(beaconId) in dangerAreas:
            del dangerAreas[str.encode(beaconId)]
        bluetooth = Bluetooth()
        bluetooth.start_scan(10)
        while bluetooth.isscanning():
            adv = bluetooth.get_adv()
            if adv:
                # try to get the complete name
                #print(bluetooth.resolve_adv_data(adv.data, Bluetooth.ADV_NAME_CMPL))

                if (adv.rssi > -63):
                    mfg_data = adv.mac  #bluetooth.resolve_adv_data(adv.data, Bluetooth.ADV_MANUFACTURER_DATA)

                    if mfg_data:
                        # try to get the manufacturer data (Apple's iBeacon data is sent here)
                        #print(ubinascii.hexlify(mfg_data))
                        tempIdValue = ubinascii.hexlify(
                            bluetooth.resolve_adv_data(
                                adv.data, Bluetooth.ADV_MANUFACTURER_DATA))
                        time.sleep(2)
                        print(tempIdValue)
                        if (tempIdValue == str.encode(beaconId)):
                            print("you have arrived", adv.rssi)

                            break
                        else:
                            if ubinascii.hexlify(
                                    bluetooth.resolve_adv_data(
                                        adv.data, Bluetooth.
                                        ADV_MANUFACTURER_DATA)) in dangerAreas:
                                p_out.value(1)  #Vibrate the motor
                                time.sleep(2)
                                p_out.value(0)
                                time.sleep(3)
                                if (len(locations) > 0):
                                    if (dangerAreas[ubinascii.hexlify(
                                            bluetooth.resolve_adv_data(
                                                adv.data, Bluetooth.
                                                ADV_MANUFACTURER_DATA))] !=
                                            locations[-1]):
                                        locations.append(
                                            dangerAreas[ubinascii.hexlify(
                                                bluetooth.resolve_adv_data(
                                                    adv.data, Bluetooth.
                                                    ADV_MANUFACTURER_DATA))])
                                        print("location: ", locations[-1])
                                        time.sleep(3)
                                    break
                                else:
                                    locations.append(
                                        ubinascii.hexlify(
                                            bluetooth.resolve_adv_data(
                                                adv.data, Bluetooth.
                                                ADV_MANUFACTURER_DATA)))
                                    print("location: ", locations[-1])
                                    time.sleep(3)
                                    break

                                print("Location size ", len(locations))
                                print(
                                    "Data of danger device",
                                    ubinascii.hexlify(
                                        bluetooth.resolve_adv_data(
                                            adv.data,
                                            Bluetooth.ADV_MANUFACTURER_DATA)),
                                    " strength ", adv.rssi)
                            else:
                                print(
                                    "Data of device",
                                    ubinascii.hexlify(
                                        bluetooth.resolve_adv_data(
                                            adv.data,
                                            Bluetooth.ADV_MANUFACTURER_DATA)),
                                    " strength ", adv.rssi)
                else:
                    continue
    else:
        print("No beaconId")
Ejemplo n.º 15
0
class SwarmBluetooth(Body.SwarmBody, Network.SwarmNetwork):
    def __init__(self):
        #Body.SwarmBody.__init__(self)
        #Network.SwarmNetwork.__init__(self)
        self.bluetooth = Bluetooth()
        self.Collision_Timer = 0
        self.Tile_Transmit_Timer = 2
        self.bl_threshold = -35
        self.RepulsionTime = 2000
        pass

    #Transmits Information about a Tile that a robot is traversing
    #We don't actually need to send temperature information in this message as other bots need not know
    def Start_Transmit_Tile_Update(self, RX, RY, Luminosity, Time_Steps):
        #This statment may be not good, current unsure
        #self.bluetooth.stopscan();
        print("Tile Transmit Update" + str(RX) + "/" + str(RY))

        #Sets the advertisment that we want, the method work up to 99, uses 01, 10

        if RX < 10:
            RXM = "0" + str(RX)
        else:
            RXM = str(RX)

        if RY < 10:
            RYM = "0" + str(RY)
        else:
            RYM = str(RY)

        ss = RXM + RYM + str(Luminosity)
        #print(ss);
        self.bluetooth.set_advertisement(name="a_mp",
                                         manufacturer_data="l",
                                         service_data=ss)
        self.bluetooth.advertise(True)
        #Sets teh timer for how long we should transmit
        self.Tile_Transmit_Timer = 200
        return -1

    def test_transmit(self):
        self.bluetooth.set_advertisement(name="a",
                                         manufacturer_data="l",
                                         service_data="99999")
        self.bluetooth.advertise(True)

    #Broadcasts the selection of a tile as a robots destination
    def Broadcast_Tile_Selection(self, Target_Destination, State):

        RX = Target_Destination[0]
        RY = Target_Destination[1]
        print("Broadcasting Tile Selection" + str(RX) + "/" + str(RY))

        #Sets the advertisment that we want, the method work up to 99, uses 01, 10

        if RX < 10:
            RXM = "0" + str(RX)
        else:
            RXM = str(RX)

        if RY < 10:
            RYM = "0" + str(RY)
        else:
            RYM = str(RY)

        mes = RXM + RYM + str(State)

        self.bluetooth.set_advertisement(name="a_tg",
                                         manufacturer_data="l",
                                         service_data=mes)
        self.bluetooth.advertise(True)
        self.Tile_Transmit_Timer = 50
        return -1

    #Handles Transmission and Listening Decisions For a given cycle
    #Needs to be run each cycle
    def Handle_Bluetooth_Behaviour(self, Swarmbehv_obj, print_boolean):
        if self.Collision_Timer > 0:
            self.Collision_Timer -= 1

        #Transmit if transmission timer is active
        #print(str(self.Tile_Transmit_Timer));
        if self.Tile_Transmit_Timer > 1:
            self.Tile_Transmit_Timer -= 1
            #self.bluetooth.stopscan();
            #print("Decrementing")
        #If stopping transmission
        elif self.Tile_Transmit_Timer == 1:
            self.bluetooth.advertise(False)
            self.Tile_Transmit_Timer -= 1
            #Start Scanning
            if self.bluetooth.isscanning() == False:
                self.bluetooth.start_scan(-1)
            #print("Starting A Scan")
        #If not transmitting
        else:

            #If we are scanning for bluetooth transmissions
            if self.bluetooth.isscanning():
                #print("Scanning");
                #Continue to do it
                adv = self.bluetooth.get_adv()
                if adv:
                    # try to get the complete name

                    if print_boolean == True:
                        pass
                        #print(self.bluetooth.resolve_adv_data(adv.data, Bluetooth.ADV_NAME_CMPL))
                    name = self.bluetooth.resolve_adv_data(
                        adv.data, Bluetooth.ADV_NAME_CMPL)
                    mfg_data = self.bluetooth.resolve_adv_data(
                        adv.data, Bluetooth.ADV_MANUFACTURER_DATA)
                    adv_mes = self.bluetooth.resolve_adv_data(
                        adv.data, Bluetooth.ADV_SERVICE_DATA)
                    if print_boolean == True:
                        pass
                        #print(adv_mes);
                    if adv_mes:
                        if print_boolean == True:
                            print("MES!")

                    if mfg_data:
                        if print_boolean == True:
                            pass
                            #print(ubinascii.hexlify(mfg_data))

                    if adv_mes and name:
                        bl_strength = adv[3]
                        #If the strength is past the bl_threshold
                        if bl_strength > self.bl_threshold:
                            #We start our collision reverse movement
                            if self.Collision_Timer == 0:
                                self.Collision_Timer = self.RepulsionTime
                            #Ths code wll be req n future
                            #Unless we are alreay in one, then we cancel it and restart normal movement
                            #else:
                            #self.Collision_Timer = 0;

                        if print_boolean == True:
                            pass
                            #print(ubinascii.hexlify(adv_mes))
                            #print(adv_mes)

                        #If meesage is an intent update
                        if name == "a_tg":
                            #if print_boolean == True:
                            #print("target recieved!" + str(bl_strength))

                            #do it
                            hexd = ubinascii.hexlify(adv_mes)
                            mx = (int(adv_mes[0]) - 48) * 10 + (
                                int(adv_mes[1]) - 48)
                            my = (int(adv_mes[2]) - 48) * 10 + (
                                int(adv_mes[3]) - 48)
                            state = int(adv_mes[4]) - 48
                            if print_boolean == True:
                                print(mx)
                                print(my)
                                print(state)
                            #If all of them are integers
                            if isinstance(mx, int) and isinstance(
                                    my, int) and isinstance(state, int):
                                Swarmbehv_obj.Map_Assignement[mx][my] = state
                                if print_boolean == True:
                                    #Swarmbehv_obj.Display_Map(Swarmbehv_obj.Map_Light);
                                    pass

                        elif name == "a_mp":
                            if print_boolean == True:
                                print("mapping recieved !")
                            #If message is a tile update
                            #Get coords of square
                            cx = (int(adv_mes[0]) - 48) * 10 + (
                                int(adv_mes[1]) - 48)
                            cy = (int(adv_mes[2]) - 48) * 10 + (
                                int(adv_mes[3]) - 48)
                            #create temp string
                            lumin_s = 0
                            for i in range(4, len(adv_mes)):
                                lumin_s += (10**(len(adv_mes) - i -
                                                 1)) * (int(adv_mes[i]) - 48)
                            #make temp float
                            lumin_s = float(lumin_s)
                            if print_boolean == True:
                                print(cx)
                                print(cy)
                                print(lumin_s)
                            #If cx and cy are integers
                            if isinstance(cx, int) and isinstance(
                                    cy, int) and cx > 0 and cy > 0:
                                Swarmbehv_obj.Map_Light[cx][cy] = lumin_s
                                Swarmbehv_obj.Map_Bounty[cx][cy] = 0
                                #Swarmbehv_obj.Area_Matrix[cx][cy] = 1;
                                #print(Swarmbehv_obj.Area_Matrix);
                                if print_boolean == True:
                                    Swarmbehv_obj.Display_Map(
                                        Swarmbehv_obj.Map_Light)
                        #Charge Request Message
                        elif name == "a_cr":
                            if print_boolean == True:
                                print("Charge Request Recieved !")
                                hexd = ubinascii.hexlify(adv_mes)
                                mx = (int(adv_mes[0]) - 48) * 10 + (
                                    int(adv_mes[1]) - 48)
                                my = (int(adv_mes[2]) - 48) * 10 + (
                                    int(adv_mes[3]) - 48)
                                #t_ID = 0;
                                #for i in range(4,len(adv_mes)):
                                #t_ID += (10**(len(adv_mes)-i-1))*(int(adv_mes[i])-48);

                                Swarmbehv_obj.Charge_Flag = True
                                #Swarmbehv_obj.classharge_ID = t_ID;
                                Swarmbehv_obj.Charge_X = mx
                                Swarmbehv_obj.Charge_Y = my

                                #If it is not then goto square and transmit intent
                        #Charge accepted message
                        elif name == "a_ch":
                            print("Charge Ticket Accepeted Elsewhere !")
                            Swarmbehv_obj.Charge_Flag = False

    #Used to run handle bluetooth behaviour on a thread
    def Handle_Bluetooth_Behaviour_Continuous(self, Swarmbehv_obj,
                                              print_boolean):
        while True:
            self.Handle_Bluetooth_Behaviour(Swarmbehv_obj, print_boolean)

    #Sends a global call for itself to be charged
    def Call_For_Charge(self, Swarmbehv_obj, Current_X, Current_Y):
        RX = 0
        RY = 0
        RY = Current_Y
        #Check the Tile 2 to the left
        if Current_X - 2 > 0:
            RX = Current_X - 2
        elif Current_X + 2 < math.floor(
                Swarmbehv_obj.Arena_X_Mm / Swarmbehv_obj.Arena_Grid_Size_X):
            RX = Current_X - 2
        else:
            pass

        RX = Current_X
        #Somthing in Y required here ?
        #Check the Tile 2 to the right

        #Use whichever is not out of the Area_Matrix

        #RX = Target_Destination[0];
        #RY = Target_Destination[1];
        print("Broadcasting Call For Charge" + str(RX) + "/" + str(RY))

        #Sets the advertisment that we want, the method work up to 99, uses 01, 10

        if RX < 10:
            RXM = "0" + str(RX)
        else:
            RXM = str(RX)

        if RY < 10:
            RYM = "0" + str(RY)
        else:
            RYM = str(RY)

        mes = RXM + RYM  #str(ubinascii.hexlify(machine.unique_id()));

        self.bluetooth.set_advertisement(name="a_cr",
                                         manufacturer_data="l",
                                         service_data=mes)
        self.bluetooth.advertise(True)
        self.Tile_Transmit_Timer = 50
        return -1

    #Tells other robots to forget if a robot of an ID has been charged
    def Call_Charge_Handled(self):
        #Simplyt broadcasts nothing with the correct name
        mes = "cH"
        self.bluetooth.set_advertisement(name="a_ch",
                                         manufacturer_data="l",
                                         service_data=mes)
        self.Tile_Transmit_Timer = 50
Ejemplo n.º 16
0
def BLEAndLoRaFun():
    ###### First, initialize as one LoRa node device ######
    # initialize LoRa in LORAWAN mode.
    # Please pick the region that matches where you are using the device:
    # Asia = LoRa.AS923
    # Australia = LoRa.AU915
    # Europe = LoRa.EU868
    # United States = LoRa.US915
    lora = LoRa(mode=LoRa.LORAWAN, region=LoRa.US915)

    # create an ABP authentication params
    dev_addr = struct.unpack(">l", binascii.unhexlify('26021A14'))[0]
    nwk_swkey = binascii.unhexlify('BB515D851353D2AB5ACCD112F0F2C597')
    app_swkey = binascii.unhexlify('B74092CB7C5A79CAD681C384ABF925D2')

    # remove all the channels
    for channel in range(0, 72):
        lora.remove_channel(channel)

    # set all channels to the same frequency (must be before sending the OTAA join request)
    for channel in range(0, 72):
        lora.add_channel(channel,
                         frequency=config.LORA_FREQUENCY,
                         dr_min=0,
                         dr_max=3)

    # join a network using ABP (Activation By Personalization)
    lora.join(activation=LoRa.ABP, auth=(dev_addr, nwk_swkey, app_swkey))

    # create a LoRa socket
    s = socket.socket(socket.AF_LORA, socket.SOCK_RAW)

    # set the LoRaWAN data rate
    s.setsockopt(socket.SOL_LORA, socket.SO_DR, 3)  # last parameter is 3

    # make the socket non-blocking
    s.setblocking(False)
    '''
	###### Second, set up BLE server service ######
    pycom.heartbeat(False)
    bluetooth = Bluetooth() #create a bluetooth object
    bluetooth.set_advertisement(name='LoPyServer'+str(globalvar.device_id), service_uuid=b'3333333333333333')
    
    #using callback conn_cb to check client's connection
    ##Function:   conn_cb(callback for bluetooth object events checking)
    ##Description:check there is any client connected to the service
    def conn_cb (bt_o):
        events = bt_o.events()#using events to check if there is any client connected to the service
        if  events & Bluetooth.CLIENT_CONNECTED:
            print("Client connected")
            pycom.rgbled(0x007f00) # green
        elif events & Bluetooth.CLIENT_DISCONNECTED:
            bt_o.disconnect_client()
            print("Client disconnected")
            pycom.rgbled(0x7f0000) # red    
            time.sleep(3)       
    bluetooth.callback(trigger=Bluetooth.CLIENT_CONNECTED | Bluetooth.CLIENT_DISCONNECTED, handler=conn_cb)
    bluetooth.advertise(True)
    #set up BLE service
    srv1 = bluetooth.service(uuid=b'3333333333333333', isprimary=True)
    #set up service character
    chr1 = srv1.characteristic(uuid=b'3333333333333333', value=5)
    #char1_read_counter = 0
    def char1_cb_handler(chr):
        #global char1_read_counter
        #char1_read_counter += 1
        global BLEConnectionCounter
        events = chr.events()
        if  events & Bluetooth.CHAR_WRITE_EVENT:
            print("Write request with value = {}".format(chr.value()))
        else:
            #modify here to send its device_id to other clients
            BLEConnectionCounter += 1
            return str(globalvar.device_id)+' '+str(BLEConnectionCounter)
    #using the callback to send the data to other clients
    char1_cb = chr1.callback(trigger=Bluetooth.CHAR_WRITE_EVENT | Bluetooth.CHAR_READ_EVENT, handler=char1_cb_handler)
	'''
    ###### Third, set up BLE client service ######
    bluetooth_client = Bluetooth()
    #bluetooth_client.init(id=0, mode=Bluetooth.BLE, antenna=None)
    bluetooth_client.start_scan(10)
    #server_name1 = bluetooth_client.resolve_adv_data(adv.data, Bluetooth.ADV_NAME_CMPL)

    counter = 50
    #while True:
    while counter > 0:
        print(counter)
        counter -= 1
        #Gets an named tuple with the advertisement data received during the scanning.
        #The structure is (mac, addr_type, adv_type, rssi, data)
        adv = bluetooth_client.get_adv()
        #servermac = ''#save the serer mac
        #use resolve_adv_data to resolve the 31 bytes of the advertisement message
        #Here is problem: when disconnect from server, then adv will always be null...

        #if get a valid advertisement from one server
        if adv:
            server_name = bluetooth_client.resolve_adv_data(
                adv.data, Bluetooth.ADV_NAME_CMPL)
            #print(server_name)
            if checkValidServer(server_name):
                try:
                    #Opens a BLE connection with the device specified by the mac_addr argument
                    #This function blocks until the connection succeeds or fails.
                    #print(adv.mac)
                    #global servermac#change servermac to global
                    #servermac = adv.mac
                    #counter += 1
                    conn = bluetooth_client.connect(adv.mac)
                    #print('connected?',conn.isconnected())
                    services = conn.services()
                    #print('This is service',services)
                    #print(services)
                    #Yunwei - it seems that only when the type of uuid is bytes then could read the data from server
                    for service in services:
                        time.sleep(0.050)
                        if type(service.uuid()) == bytes:
                            chars = service.characteristics()
                            for char in chars:
                                #check if the character properties is PROP_READ
                                properties = char.properties()
                                print('char properties is ' + str(properties))
                                if (properties & Bluetooth.PROP_READ):
                                    print('char {} value = {}'.format(
                                        char.uuid(), char.read()))
                                    #Use LoRa to send the data out
                                    #s.send(char.read())
                                    time.sleep(2)
                                #10 & Bluetooth.PROP_WRITE
                                #10&Bluetooth.PROP_READ
                                if (properties & Bluetooth.PROP_WRITE):
                                    print('write to server!')
                                    char.write(b'x02')
                                    time.sleep(2)
                    #Yunwei
                    conn.disconnect()
                    #bluetooth_client.deinit()
                    bluetooth_client.stop_scan()
                    time.sleep(3)
                    bluetooth_client.deinit()
                    print('deinit')
                    time.sleep(3)
                    bluetooth_client.init()
                    #if(bluetooth_client.isscanning()):
                    #    bluetooth_client.stop_scan()
                    #bluetooth_client.deinit()
                    bluetooth_client.start_scan(10)
                    print('connected?', conn.isconnected())
                    #break
                    time.sleep(3)
                    gc.collect()
                    #if it's still scan, then need to stop scan first
                    #bluetooth_client.start_scan(-1)
                    '''
                    if(bluetooth_client.isscanning()):
                        bluetooth_client.stop_scan()
                        #then scan again
                        bluetooth_client.start_scan(-1)
                    '''
                except:
                    print(
                        "Error while connecting or reading from the BLE device"
                    )
                    #break
                    time.sleep(1)
                    if (bluetooth_client.isscanning()):
                        bluetooth_client.stop_scan()
                        bluetooth_client.deinit()
                        time.sleep(1)
                        bluetooth_client.deinit()
                        time.sleep(1)
                        #init again
                        bluetooth_client.init(id=0,
                                              mode=Bluetooth.BLE,
                                              antenna=None)
                        bluetooth_client.start_scan(10)
                    else:
                        bluetooth_client.deinit()
                        time.sleep(1)
                        bluetooth_client.init()
                        time.sleep(1)
                        bluetooth_client.start_scan(10)
                    print('Scan again')
        else:
            print('adv is None!')
            time.sleep(3)
            '''
            time.sleep(3)
            #if it's still scan, then need to stop scan first
            if(bluetooth_client.isscanning()):
                bluetooth_client.stop_scan()
                #then scan again
                bluetooth_client.start_scan(-1)
            '''
    #bluetooth_client.stop_scan()
    bluetooth_client.stop_scan()
    bluetooth_client.deinit()
    print('out of loop!')
Ejemplo n.º 17
0
wdt = machine.WDT(timeout=300000)

py = Pysense()
mp = MPL3115A2(py,mode=ALTITUDE) # Returns height in meters. Mode may also be set to PRESSURE, returning a value in Pascals
si = SI7006A20(py)
lt = LTR329ALS01(py)
li = LIS2HH12(py)

bt = Bluetooth()
bt.set_advertisement(name="pycom")
bt.advertise(True)

while True:
    wdt.feed()
    bt.start_scan(10)
    while bt.isscanning():
        time.sleep_ms(100)
    advs = bt.get_advertisements()
    devices = set()
    devicetypes = dict()
    for adv in advs:
        if adv.mac in devices:
            continue
        devices.add(adv.mac)
        print("MAC: "+str(ubinascii.hexlify(adv.mac)))
        print("RSSI: "+str(adv.rssi))
        print("NameShort: "+str(bt.resolve_adv_data(adv.data, Bluetooth.ADV_NAME_SHORT)))
        print("NameComplete: "+str(bt.resolve_adv_data(adv.data, Bluetooth.ADV_NAME_CMPL)))
        mfg_data = bt.resolve_adv_data(adv.data, Bluetooth.ADV_MANUFACTURER_DATA)
        if mfg_data:
            # try to get the manufacturer data (Apple's iBeacon data is sent here)
class BluetoothApi:
    """Many examples integrated from
    https://microchipdeveloper.com/wireless:ble-gatt-data-organization
    https://development.pycom.io/firmwareapi/pycom/network/bluetooth/
    https://github.com/sandeepmistry/arduino-BLEPeripheral
    https://github.com/kriswiner/nRF52832DevBoard/blob/master/BMP280_nRF52.ino
    
    https://forum.pycom.io/topic/2826/how-to-send-data-to-characteristic-over-ble/17


    """
    def __init__(self):
        self.bt = None

    def start(self):
        """ """

        print('Starting Bluetooth')
        self.bt = Bluetooth()

        # Default
        #self.bt.init(id=0, mode=Bluetooth.BLE, antenna=Bluetooth.INT_ANT, modem_sleep=True)
        #self.bt.init(id=0, antenna=Bluetooth.INT_ANT, modem_sleep=False)
        self.bt.init(modem_sleep=False)

        return

        print('Entering main loop')
        while True:
            print('--- loop ---')

            adv = self.bt.get_adv()
            print('adv:', adv)

            # Give the system some breath.
            print('machine.idle()')
            machine.idle()

            utime.sleep(10.0)
            continue

    def scan(self, duration):
        """

        :param duration: 

        """
        duration = int(duration)
        print('Starting Bluetooth scan for {} seconds'.format(duration))
        self.bt.start_scan(duration)
        while self.bt.isscanning():
            #print('is-scanning')
            adv = self.bt.get_adv()
            if adv:
                # try to get the complete name
                name_short = self.bt.resolve_adv_data(adv.data,
                                                      Bluetooth.ADV_NAME_SHORT)
                name_complete = self.bt.resolve_adv_data(
                    adv.data, Bluetooth.ADV_NAME_CMPL)
                print('names:', name_short, name_complete)

                service_data = self.bt.resolve_adv_data(
                    adv.data, Bluetooth.ADV_SERVICE_DATA)
                print('service_data:', service_data)

                mfg_data = self.bt.resolve_adv_data(
                    adv.data, Bluetooth.ADV_MANUFACTURER_DATA)
                if mfg_data:
                    # try to get the manufacturer data (Apple's iBeacon data is sent here)
                    data = ubinascii.hexlify(mfg_data)
                    print('data:', data)

        print('Bluetooth scanning stopped')

    def find_heart_rate(self):
        """ """
        adv = self.bt.get_adv()
        if adv and self.bt.resolve_adv_data(
                adv.data, Bluetooth.ADV_NAME_CMPL) == 'Heart Rate':
            try:
                conn = self.bt.connect(adv.mac, timeout=5000)
                services = conn.services()
                for service in services:
                    utime.sleep(0.050)
                    if type(service.uuid()) == bytes:
                        print('Reading chars from service = {}'.format(
                            service.uuid()))
                    else:
                        print('Reading chars from service = %x' %
                              service.uuid())
                    chars = service.characteristics()
                    for char in chars:
                        if (char.properties() & Bluetooth.PROP_READ):
                            print('char {} value = {}'.format(
                                char.uuid(), char.read()))
                conn.disconnect()
            except:
                print("Error while connecting or reading from the BLE device")
        else:
            utime.sleep(0.050)

        utime.sleep(10.0)

    def advertise(self):
        """https://development.pycom.io/firmwareapi/pycom/network/bluetooth/"""

        device_name = get_device_name()
        print('Advertising device {}'.format(device_name))
        # TODO: Get from settings
        self.bt.set_advertisement(name=device_name,
                                  service_uuid=b'1234567890123456')

        def conn_cb(bt_o):
            """

            :param bt_o: 

            """
            print("Callback happened")
            # Returns flags and clear internal registry
            events = bt_o.events()
            if events & Bluetooth.CLIENT_CONNECTED:
                print("Client connected:", events)
            elif events & Bluetooth.CLIENT_DISCONNECTED:
                print("Client disconnected")

        self.bt.callback(trigger=Bluetooth.CLIENT_CONNECTED
                         | Bluetooth.CLIENT_DISCONNECTED,
                         handler=conn_cb)

        self.bt.advertise(True)

    def start_service(self):
        """https://development.pycom.io/firmwareapi/pycom/network/bluetooth/gattsservice/
        https://development.pycom.io/firmwareapi/pycom/network/bluetooth/gattscharacteristic/
        
        https://www.bluetooth.com/specifications/gatt/characteristics/
        https://docs.python.org/3/library/struct.html
        
        The format field determines how a single value contained in the Characteristic Value is formatted.
        The information contained on this page is referenced in Bluetooth® Core Specification Volume 3, Part G, Section 3.3.3.5.2.
        https://www.bluetooth.com/specifications/assigned-numbers/format-types/


        """
        print('Starting service')

        # A. Battery Service
        # UUID: 180F
        # Abstract: The Battery Service exposes the state of a battery within a device
        # https://github.com/oesmith/gatt-xml/blob/master/org.bluetooth.service.battery_service.xml
        battery = self.bt.service(uuid=0x180F,
                                  isprimary=True,
                                  nbr_chars=1,
                                  start=True)

        # Battery Level
        # UUID: 2A19
        # Abstract: The current charge level of a battery.
        #           100% represents fully charged while 0% represents fully discharged
        # Format: uint8
        # https://github.com/oesmith/gatt-xml/blob/master/org.bluetooth.characteristic.battery_level.xml
        battery_level = battery.characteristic(uuid=0x2A19, value=78)

        # B. Environmental Sensing Service (ESS)
        # https://github.com/oesmith/gatt-xml/blob/master/org.bluetooth.service.environmental_sensing.xml
        # https://www.bluetooth.com/specifications/assigned-numbers/environmental-sensing-service-characteristics/
        # https://github.com/sandeepmistry/arduino-BLEPeripheral/issues/215
        # https://github.com/sandeepmistry/arduino-nRF5/issues/248
        environment = self.bt.service(uuid=0x181A,
                                      isprimary=True,
                                      nbr_chars=5,
                                      start=True)

        # Temperature
        # UUID: 2A6E
        # InformativeText: Unit is in degrees Celsius with a resolution of 0.01 degrees Celsius
        # Format: sint16
        # https://github.com/oesmith/gatt-xml/blob/master/org.bluetooth.characteristic.temperature.xml
        # https://github.com/oesmith/gatt-xml/blob/master/org.bluetooth.characteristic.temperature_measurement.xml
        # https://github.com/oesmith/gatt-xml/blob/master/org.bluetooth.characteristic.temperature_type.xml
        # https://github.com/ARMmbed/ble/blob/master/ble/services/HealthThermometerService.h
        # https://github.com/ARMmbed/ble/blob/master/ble/services/EnvironmentalService.h

        # Temperature Celsius
        # UUID: 2A1F
        # Format: sint16
        # https://www.bluetooth.com/wp-content/uploads/Sitecore-Media-Library/Gatt/Xml/Characteristics/org.bluetooth.characteristic.temperature_celsius.xml
        self.temp = 42.42
        temperature = environment.characteristic(uuid=0x2A1F)

        def temp_getter(chr):
            """

            :param chr: 

            """
            print('Getting characteristic:', chr)
            value = sint16(self.temp * 10)
            print('Value:', value)
            self.temp += 1
            return value

        print('Adding characteristic callback')
        temperature_callback = temperature.callback(
            trigger=Bluetooth.CHAR_READ_EVENT, handler=temp_getter)

        # Temperature Measurement
        # UUID: 2A1C
        # Format: Variable length structure
        # Value Format: FLOAT (IEEE-11073 32-bit FLOAT)
        # Abstract: The Temperature Measurement characteristic is a variable length structure
        # containing a Flags field, a Temperature Measurement Value field and, based upon the
        # contents of the Flags field, optionally a Time Stamp field and/or a Temperature Type field.
        # https://www.bluetooth.com/wp-content/uploads/Sitecore-Media-Library/Gatt/Xml/Characteristics/org.bluetooth.characteristic.temperature_measurement.xml
        print('Adding Temperature Measurement')
        temperature_measurement = environment.characteristic(
            uuid=0x2A1C, value=encode_temperature_2a1c(42.428423))

        # Scientific Temperature
        # UUID: 2A3C
        # Format: float64 (IEEE-754 64-bit floating point)
        # https://www.bluetooth.com/wp-content/uploads/Sitecore-Media-Library/Gatt/Xml/Characteristics/org.bluetooth.characteristic.scientific_temperature_celsius.xml
        # http://forum.espruino.com/conversations/306536/
        # https://stackoverflow.com/questions/36655172/how-to-read-a-ble-characteristic-float-in-swift

        # For the 'f', 'd' and 'e' conversion codes, the packed representation uses the IEEE 754
        # binary32, binary64 or binary16 format (for 'f', 'd' or 'e' respectively), regardless of
        # the floating-point format used by the platform.
        # https://docs.python.org/3/library/struct.html
        #print('Adding Scientific Measurement')
        #temperature_sci = environment.characteristic(uuid=0x2A3C, value=float64(42.42))

        # Humidity
        # UUID: 2A6F
        # InformativeText: Unit is in percent with a resolution of 0.01 percent
        # Format: uint16
        # https://github.com/oesmith/gatt-xml/blob/master/org.bluetooth.characteristic.humidity.xml
        humidity1 = environment.characteristic(uuid=0x2A6F,
                                               value=uint16(86.86 * 100))
        humidity2 = environment.characteristic(uuid=0x2A6F,
                                               value=uint16(50.55 * 100))

        # Pressure
        # UUID: 2A6D
        # InformativeText: Unit is in pascals with a resolution of 0.1 Pa
        # Format: uint32
        # https://www.bluetooth.com/wp-content/uploads/Sitecore-Media-Library/Gatt/Xml/Characteristics/org.bluetooth.characteristic.pressure.xml

        # Weight
        # UUID: 2A98
        # InformativeText: Unit is in kilograms with a resolution of 0.005
        # Format: uint16
        # https://www.bluetooth.com/wp-content/uploads/Sitecore-Media-Library/Gatt/Xml/Characteristics/org.bluetooth.characteristic.weight.xml
        # https://www.bluetooth.com/wp-content/uploads/Sitecore-Media-Library/Gatt/Xml/Characteristics/org.bluetooth.characteristic.weight_measurement.xml
        # https://www.bluetooth.com/wp-content/uploads/Sitecore-Media-Library/Gatt/Xml/Characteristics/org.bluetooth.characteristic.weight_scale_feature.xml
        # https://github.com/oesmith/gatt-xml/blob/master/org.bluetooth.characteristic.weight.xml
        # https://github.com/oesmith/gatt-xml/blob/master/org.bluetooth.characteristic.weight_measurement.xml
        # https://github.com/oesmith/gatt-xml/blob/master/org.bluetooth.characteristic.weight_scale_feature.xml
        weight = environment.characteristic(uuid=0x2A98,
                                            value=uint16(25.44 * 2 * 100))

        # GPS
        # https://forum.pycom.io/topic/5012/can-only-see-value-of-first-gatt-characteristic
        """
        lan = bt.service(0x1819, nbr_chars=3)
        # 0.001 precision
        lan.characteristic(uuid=0x2AAE, value=int(gps.lat * 1000))
        lan.characteristic(uuid=0x2AAF, value=int(gps.lon * 1000))
        lan.characteristic(uuid=0x2AB3, value=int(gps.alt * 1000))
        """

        # Generic Access
        # UUID: 1800
        # Abstract: The generic_access service contains generic information
        # about the device. All available Characteristics are readonly.
        # https://www.bluetooth.com/wp-content/uploads/Sitecore-Media-Library/Gatt/Xml/Services/org.bluetooth.service.generic_access.xml

        # Generic Attribute Service
        # UUID: 1801
        # https://www.bluetooth.com/wp-content/uploads/Sitecore-Media-Library/Gatt/Xml/Services/org.bluetooth.service.generic_attribute.xml
        # String Characteristic
        # UUID: 2A3D
        # A generic UTF8 string which may be used in Services requiring strings.
        # https://www.bluetooth.com/wp-content/uploads/Sitecore-Media-Library/Gatt/Xml/Characteristics/org.bluetooth.characteristic.string.xml
        srv1 = self.bt.service(uuid=BluetoothUuid.to_bytes_le(
            '15ECCA29-0B6E-40B3-9181-BE9509B53200'),
                               isprimary=True,
                               nbr_chars=2,
                               start=True)
        #generic_attribute = self.bt.service(uuid=0x1800, isprimary=True, nbr_chars=2, start=True)
        #wifi_ssid = generic_attribute.characteristic(uuid=0x2A3D, properties=Bluetooth.PROP_BROADCAST | Bluetooth.PROP_INDICATE | Bluetooth.PROP_NOTIFY | Bluetooth.PROP_READ | Bluetooth.PROP_WRITE, value="default")
        #wifi_ssid = generic_attribute.characteristic(uuid=0x2A3D, properties=Bluetooth.PROP_NOTIFY | Bluetooth.PROP_READ | Bluetooth.PROP_WRITE, value="default")
        wifi_ssid = srv1.characteristic(uuid=0x2A3D)
        #wifi_password = generic_attribute.characteristic(uuid=0x2A3D, properties=Bluetooth.PROP_READ | Bluetooth.PROP_WRITE)
        #print('wifi_ssid:', wifi_ssid, dir(wifi_ssid))
        #cfg = wifi_ssid.config()
        #print('cfg:', cfg)
        #wifi_ssid.config(name='hallodri')

        print('wifi_ssid:', wifi_ssid)
        print('wifi_ssid:', dir(wifi_ssid))

        def wifi_callback(characteristic):
            """

            :param characteristic: 

            """
            print('Characteristic callback:', characteristic)
            #print('attr_obj:', characteristic.attr_obj)
            events = characteristic.events()
            if events & Bluetooth.CHAR_WRITE_EVENT:
                print("Write request with value = {}".format(
                    characteristic.value()))
            else:
                pass
            value = characteristic.value()
            print('Reading characteristic:', value)

        print('Adding characteristic callback')
        wifi_ssid_callback = wifi_ssid.callback(
            trigger=Bluetooth.CHAR_READ_EVENT | Bluetooth.CHAR_WRITE_EVENT,
            handler=wifi_callback)
        #wifi_password_callback = wifi_password.callback(trigger=Bluetooth.CHAR_READ_EVENT | Bluetooth.CHAR_WRITE_EVENT, handler=wifi_callback)

        #print('instance:', wifi_ssid.instance())

        # Characteristic User Description
        # UUID: 0x2901,0x2902
        print(wifi_ssid_callback)
        print(dir(wifi_ssid_callback))
        srv1.characteristic(uuid=0x2901, value="hello world 1")