def rcvdBeacon():
global seq
global thread_kill
dev_id = 0
try:
sock = bluez.hci_open_dev(dev_id)
print("\n *** Looking for BLE Beacons ***\n")
print("\n *** CTRL-C to Cancel ***\n")
except:
print("Error accessing bluetooth")
ScanUtility.hci_enable_le_scan(sock)
t = 0.0
#Scans for iBeacons
try:
while True:
returnedList = ScanUtility.parse_events(sock, 100)
#print(time.time(), returnedList)
if returnedList:
for item in returnedList:
if seq >= 12:
seq = 0
else:
seq += 1
# print(item)
# byteData = item
#if beacons4Server[item['uuid']][1]
beacons4Server[item['uuid']] = [item['rssi'], seq]
#interval=time.time()-t
#print(interval, beacons4Server)
print(" ")
else:
for item in returnedList:
beacons4Server[item['uuid']] = [0.0, -1]
returnedList.clear()
if thread_kill:
break
#t=time.time()
except KeyboardInterrupt:
pass
def start(self):
p=re.compile(UUID_REGEX.lower())
try:
sock = bluez.hci_open_dev(self.dev_id)
except:
print("Error accessing bluetooth")
print(traceback.format_exc())
ScanUtility.hci_enable_le_scan(sock)
# Scans for iBeacons
try:
while True:
returnedList = ScanUtility.parse_events(sock, 10)
for item in returnedList:
if item['type'] is 'iBeacon' and \
p.match(item['uuid'].replace('-','').lower()) is not None:
sg = item['minor'] / 1000
t_f = item['major']
self.grav = 135.997 * (sg ** 3) - 630.272 * (sg ** 2) + 1111.14 * sg - 616.868
self.temp = (t_f - 32) * 5 / 9.
except KeyboardInterrupt:
pass
def _scanLoop(self):
#Set bluetooth device. Default 0.
dev_id = 0
try:
sock = bluez.hci_open_dev(dev_id)
except:
print("Error accessing bluetooth")
ScanUtility.hci_enable_le_scan(sock)
self.scanExit = False
self.scanMutex.acquire()
self.beaconList = {}
self.scanMutex.release()
while not self.scanExit:
beacons = ScanUtility.parse_events(sock, 10)
currTime = datetime.datetime.now()
self.scanMutex.acquire()
for beacon in beacons:
if beacon['type'] == 'iBeacon':
if beacon['uuid'] == str(self.uuid):
self.beaconList[self._deviceKey(beacon)] = (currTime,
beacon)
'''
elif beacon['type'] == 'Overflow':
if beacon['uuid'] == '2f234454-cf6d-4a0f-adf2-f4911ba9ffa6':
print("Overflow:-------------")
print(beacon)
print("")
'''
self.scanMutex.release()
def inLoop():
try:
returnedList = ScanUtility.parse_events(sock, 10)
if not returnedList is None:
for item in returnedList:
# print(item)
# print(item['type'])
if not item is None:
if(item['type'] == "iBeacon"):
return item ;
else :
return {}
else :
return {}
except Exception as e:
# print("inE1")
# print (e)
return {}
pass
#This is a working prototype. DO NOT USE IT IN LIVE PROJECTS
import ScanUtility
import bluetooth._bluetooth as bluez
import os
#Set bluetooth device. Default 0.
dev_id = 0
try:
sock = bluez.hci_open_dev(dev_id)
print("\n *** Looking for BLE Beacons ***\n")
print("\n *** CTRL-C to Cancel ***\n")
except:
print("Error accessing bluetooth")
ScanUtility.hci_enable_le_scan(sock)
#Scans for iBeacons
try:
while True:
returnedList = ScanUtility.parse_events(sock, 10)
for item in returnedList:
if item.get("macAddress") == "e2:e3:23:d1:b0:54":
print("")
os.system(
"php /home/projektimies/Lighthouse/DatabaseInsert1.php")
print("")
print("BEACON 1")
print(item.get("macAddress"))
print(item.get("rssi"))
print("")
if item.get("macAddress") == "d6:2c:ca:c0:d4:9c":
"00000000-0000-0000-0000-000000000057",
"00000000-0000-0000-0000-00000000001C",
"00000000-0000-0000-0000-000000000060",
"00000000-0000-0000-0000-00000000002B",
"00000000-0000-0000-0000-000000000072",
"00000000-0000-0000-0000-000000000039"
]
#Set bluetooth device. Default 0.
dev_id = 0
try:
sock = bluez.hci_open_dev(dev_id)
except:
print("Error accessing bluetooth")
ScanUtility.hci_enable_le_scan(sock)
#Scans for iBeacons
try:
while True:
beaconList = ScanUtility.parse_events(sock, 10)
for beacon in beaconList:
if beacon['type'] == 'iBeacon':
if beacon['uuid'] == '2f234454-cf6d-4a0f-adf2-f4911ba9ffa6':
print("iBeacon:-------------")
print(beacon)
print("")
elif beacon['type'] == 'Overflow':
print("Overflow:-------------")
print(beacon)
print("")
except Exception as e:
# print("inE1")
# print (e)
return {}
pass
try:
print(dev_id)
sock = bluez.hci_open_dev(dev_id)
print(sock)
print ("\n *** Looking for BLE Beacons ***\n")
print ("\n *** CTRL-C to Cancel ***\n")
except:
print ("Error accessing bluetooth")
ScanUtility.hci_enable_le_scan(sock)
#Scans for iBeacons
def checkRssi(x,z):
sz = 20 # 数据量
# x = 0.1 # 真实值
# z = np.random.normal(x, 0.1, size=sz) # 观测值，服从高斯分布
Q = 1e-5 # 过程噪声
R = 1e-2 # 观测噪声
# 为变量分配空间
x_predict = np.zeros(sz) # x的先验估计，也就是预测值
P_predict = np.zeros(sz) # P的先验估计
x_update = np.zeros(sz) # x的后验估计，也就是最终的估计量