{\rtf1\ansi\ansicpg1252\cocoartf2511
\cocoatextscaling0\cocoaplatform0{\fonttbl\f0\fnil\fcharset0 Menlo-Regular;}
{\colortbl;\red255\green255\blue255;\red0\green0\blue0;\red255\green255\blue255;}
{\*\expandedcolortbl;;\cssrgb\c0\c0\c0;\cssrgb\c100000\c100000\c100000\c0;}
\margl1440\margr1440\vieww10800\viewh8400\viewkind0
\pard\tx560\tx1120\tx1680\tx2240\tx2800\tx3360\tx3920\tx4480\tx5040\tx5600\tx6160\tx6720\pardirnatural\partightenfactor0

\f0\fs16 \cf2 \cb3 \CocoaLigature0 import blescan\
import sys\
import os\
import decimal\
from decimal import Decimal\
#import time\
from time import sleep\
import math\
import bluetooth._bluetooth as bluez\
import argparse\
import RPi.GPIO as GPIO\
GPIO.setwarnings(False)\
GPIO.setmode(GPIO.BOARD)\
GPIO.setup(11,GPIO.IN, pull_up_down = GPIO.PUD_DOWN)\
GPIO.setup(12,GPIO.IN, pull_up_down = GPIO.PUD_DOWN)\
GPIO.setup(7, GPIO.OUT)\
GPIO.setup(8, GPIO.OUT)\
GPIO.setup(15, GPIO.OUT)\
\
#Arguments parser\
parser = argparse.ArgumentParser(description='Reliable Bluetooth LE (iBeacon) scanner')\
parser.add_argument('-i', type=int, default=0, help='Bluetooth adapter ID')\
parser.add_argument('-t', type=int, default=10, help='Seconds between two survey. A small value can cause some beacon to be missed')\
parser.add_argument('-n', type=float, default=1.0, help='Path loss exponent')\
parser.add_argument('-pdz', type=int, default=1, help='TxPower at taring position')\
parser.add_argument('-dz', type=int, default=1, help='Distance of taring position (m) ')\
\
args = parser.parse_args()\
\
# Console colors\
W = '\\033[0m'  # white (normal)\
R = '\\033[31m'  # red\
G = '\\033[32m'  # green\
O = '\\033[33m'  # orange\
B = '\\033[34m'  # blue\
P = '\\033[35m'  # purple\
C = '\\033[36m'  # cyan\
GR = '\\033[37m'  # gray\
\
\
NearCount = 2\
InterCount = 2\
FarCount = 2\
\
\
def printInfo(str):\
        print G + "[INFO]" + str\
\
def printError(str):\
        print R + "[ERROR]" + str\
\
def gracefulExit():\
        print\
        print R + "Quitting... ByeBye!"\
        print W\
        GPIO.output(7, GPIO.LOW)\
        GPIO.output(8, GPIO.LOW)\
        GPIO.output(15, GPIO.LOW)\
        sys.exit(0)\
\
def badExit():\
        print\
        print R + "Somethings went wrong...! Quitting!"\
        print W\
        sys.exit(1)\
\
def getDistance(rssi, oldDist):\
\
        global NearCount\
        global InterCount\
        global FarCount\
\
        if(rssi > -70):\
                NearCount += 1\
                if(NearCount >= 2):\
                        dist = "Near"\
                        NearCount = 0\
                else:\
                        dist = oldDist\
        elif(rssi > -85):\
                InterCount += 1\
                if(InterCount >= 2):\
                        dist = "Inter"\
                        InterCount = 0\
                else:\
                        dist = oldDist\
	   else:\
                FarCount += 1\
                if(FarCount >= 2):\
                        dist = "Far"\
                        FarCount = 0\
                else:\
                        dist = oldDist\
\
        return str(dist)\
def getDistVal(rssi):\
        dist = float(10)**(float(-40 - rssi)/float(100))\
        return dist\
def blinkLED(dist, led):\
\
        print (dist)\
\
        if(dist == "Near"):\
                GPIO.output(led, GPIO.LOW)\
                sleep(0.1)\
                GPIO.output(led, GPIO.HIGH)\
                sleep(0.1)\
                GPIO.output(led, GPIO.LOW)\
                sleep(0.1)\
                GPIO.output(led, GPIO.HIGH)\
                sleep(0.1)\
                GPIO.output(led,GPIO.LOW)\
                sleep(0.1)\
                GPIO.output(led,GPIO.HIGH)\
                sleep(0.1)\
                GPIO.output(led,GPIO.LOW)\
                sleep(0.1)\
                GPIO.output(led,GPIO.HIGH)\
        elif(dist == "Inter"):\
                GPIO.output(led, GPIO.LOW)\
                sleep(1)\
                GPIO.output(led, GPIO.HIGH)\
                sleep(1)\
                GPIO.output(led, GPIO.LOW)\
                sleep(1)\
                GPIO.output(led, GPIO.HIGH)\
        else:\
                GPIO.output(led, GPIO.HIGH)\
\
\
print O\
\
printInfo("Starting BLE thread on device ID: " + str(args.i) + "...")\
try:\
        sock = bluez.hci_open_dev(int(args.i))\
\
except:\
        printError("Error accessing bluetooth device!")\
        badExit()\
\
\
printInfo("Setting up BLE device ...")\
try:\
        blescan.hci_le_set_scan_parameters(sock)\
\
except:\
        printError("Error setting up bluetooth device!")\
        badExit()\
\
printInfo("Start scanning...")\
try:\
        blescan.hci_enable_le_scan(sock)\
except:\
        printError("Error scanning! Maybe not root?")\
        badExit()\
\
GPIO.output(7, GPIO.LOW)\
connected = False\
disconnectCount = 0\
timmer = 50\
distance = "Far"\
distVal = 0;\
while True:\
        try:\
                #Try to retrive the full scan result\
                returnedList = blescan.parse_events(sock, args.t)\
\
                purgedList = []\
                seen = set()\
                purgedList = []\
                #We search and delete all the beacon from the same device\
                #Looping througth the returnedList, every time we found a MAC adr\
                #that is not present in 'seen', we add it to 'seen' and 'purgedList'\
                for d in returnedList:\
                    if(d['UUID'] == "c7c1a1bfbb004cad87049f2d2917ded2"):\
                        connected = True\
                        timmer = 50\
                        distance = getDistance(d['RSSI'][0], distance)\
                        #distVal = getDistVal(d['RSSI'][0])\
                        #t = d['MAC']\
                        #if t not in seen:\
                            #seen.add(t)\
                            #purgedList.append(d)\
                    else:\
                        timmer -= 1\
                        if(timmer < 0):\
                                disconnectCount += 1\
                                if(disconnectCount >= 5):\
                                        connected = False\
                                        disconnectCount = 0\
\
\
                print(GPIO.input(12))\
                if(connected and GPIO.input(12) == GPIO.HIGH):\
                        print("connected and Insight")\
                        GPIO.output(8, GPIO.LOW)\
                        GPIO.output(15, GPIO.LOW)\
                        blinkLED(distance, 7)\
                elif(connected):\
                        print("connected")\
                        GPIO.output(7, GPIO.LOW)\
                        GPIO.output(8, GPIO.LOW)\
                        blinkLED(distance, 15)\
                else:\
                        print("disconnected")\
                        GPIO.output(7, GPIO.LOW)\
                        GPIO.output(15, GPIO.LOW)\
                        GPIO.output(8, GPIO.HIGH)\
\
\
                #for beacon in purgedList:\
                        #print G + "\{0:<20s\}\{1:<10s\}\{2:<10s\}\{3:<10s\}\{4:<10s\}\{5:<13s\}\{6:<10s\}".format("MAC","MAJOR","MINOR","RSSI","TxPOWER","DISTANCE(m)","UUDI")\
                        #print("\{0:<20s\}\{1:<10\}\{2:<10\}\{3:<10d\}\{4:<10d\}\{5:<13\}\{6:<10\}".format(beacon['MAC'],beacon['MAJOR'],beacon['MINOR'],beacon['RSSI'][0],beacon['TxPOWER'][0],getDistVal(beacon['RSSI'][0]),beacon['UUID']))\
\
\
                #pr  int P+"Scanning.... "\
        except KeyboardInterrupt: #Did the user press CTRL+C ?\
                print\
                printInfo("User press CTRL+C")\
                gracefulExit()\
        except Exception, e: #Did somethings went wrong? (ie. hot-unpluged  BT adapter)\
                printError(str(e))\
                badExit()\
\
        if(GPIO.input(11) == GPIO.LOW):\
                print W\
                GPIO.output(7, GPIO.LOW)\
                GPIO.output(8, GPIO.LOW)\
                GPIO.output(15, GPIO.LOW)\
                sys.exit(0)}