Open kessero opened 6 years ago
Were you able to resolve this error? I am facing the same issue
No, I use c++ for my task
This is because you are using python3. It should work right in python2.7. Otherwise, you may have to make modifications to get the code running correctly. Replace your blescan with this:
# Modified by Aadhithya Kannan (aadhi0319 - GitHub Handle)
# 25 May 2020
# BLE iBeaconScanner based on https://github.com/adamf/BLE/blob/master/ble-scanner.py
# JCS 06/07/14
DEBUG = False
# BLE scanner based on https://github.com/adamf/BLE/blob/master/ble-scanner.py
# BLE scanner, based on https://code.google.com/p/pybluez/source/browse/trunk/examples/advanced/inquiry-with-rssi.py
# https://github.com/pauloborges/bluez/blob/master/tools/hcitool.c for lescan
# https://kernel.googlesource.com/pub/scm/bluetooth/bluez/+/5.6/lib/hci.h for opcodes
# https://github.com/pauloborges/bluez/blob/master/lib/hci.c#L2782 for functions used by lescan
# performs a simple device inquiry, and returns a list of ble advertizements
# discovered device
# NOTE: Python's struct.pack() will add padding bytes unless you make the endianness explicit. Little endian
# should be used for BLE. Always start a struct.pack() format string with "<"
import os
import sys
import struct
import bluetooth._bluetooth as bluez
LE_META_EVENT = 0x3e
LE_PUBLIC_ADDRESS=0x00
LE_RANDOM_ADDRESS=0x01
LE_SET_SCAN_PARAMETERS_CP_SIZE=7
OGF_LE_CTL=0x08
OCF_LE_SET_SCAN_PARAMETERS=0x000B
OCF_LE_SET_SCAN_ENABLE=0x000C
OCF_LE_CREATE_CONN=0x000D
LE_ROLE_MASTER = 0x00
LE_ROLE_SLAVE = 0x01
# these are actually subevents of LE_META_EVENT
EVT_LE_CONN_COMPLETE=0x01
EVT_LE_ADVERTISING_REPORT=0x02
EVT_LE_CONN_UPDATE_COMPLETE=0x03
EVT_LE_READ_REMOTE_USED_FEATURES_COMPLETE=0x04
# Advertisment event types
ADV_IND=0x00
ADV_DIRECT_IND=0x01
ADV_SCAN_IND=0x02
ADV_NONCONN_IND=0x03
ADV_SCAN_RSP=0x04
def returnnumberpacket(pkt):
myInteger = 0
multiple = 256
for c in pkt:
myInteger += c * multiple
multiple = 1
return myInteger
def returnstringpacket(pkt):
myString = "";
for c in pkt:
myString += "%02x" % c
return myString
def printpacket(pkt):
for c in pkt:
sys.stdout.write("%02x " % c)
def get_packed_bdaddr(bdaddr_string):
packable_addr = []
addr = bdaddr_string.split(':')
addr.reverse()
for b in addr:
packable_addr.append(int(b, 16))
return struct.pack("<BBBBBB", *packable_addr)
def packed_bdaddr_to_string(bdaddr_packed):
return ':'.join('%02x'%i for i in struct.unpack("<BBBBBB", bdaddr_packed[::-1]))
def hci_enable_le_scan(sock):
hci_toggle_le_scan(sock, 0x01)
def hci_disable_le_scan(sock):
hci_toggle_le_scan(sock, 0x00)
def hci_toggle_le_scan(sock, enable):
# hci_le_set_scan_enable(dd, 0x01, filter_dup, 1000);
# memset(&scan_cp, 0, sizeof(scan_cp));
#uint8_t enable;
# uint8_t filter_dup;
# scan_cp.enable = enable;
# scan_cp.filter_dup = filter_dup;
#
# memset(&rq, 0, sizeof(rq));
# rq.ogf = OGF_LE_CTL;
# rq.ocf = OCF_LE_SET_SCAN_ENABLE;
# rq.cparam = &scan_cp;
# rq.clen = LE_SET_SCAN_ENABLE_CP_SIZE;
# rq.rparam = &status;
# rq.rlen = 1;
# if (hci_send_req(dd, &rq, to) < 0)
# return -1;
cmd_pkt = struct.pack("<BB", enable, 0x00)
bluez.hci_send_cmd(sock, OGF_LE_CTL, OCF_LE_SET_SCAN_ENABLE, cmd_pkt)
def hci_le_set_scan_parameters(sock):
old_filter = sock.getsockopt( bluez.SOL_HCI, bluez.HCI_FILTER, 14)
SCAN_RANDOM = 0x01
OWN_TYPE = SCAN_RANDOM
SCAN_TYPE = 0x01
def parse_events(sock, loop_count=100):
old_filter = sock.getsockopt( bluez.SOL_HCI, bluez.HCI_FILTER, 14)
# perform a device inquiry on bluetooth device #0
# The inquiry should last 8 * 1.28 = 10.24 seconds
# before the inquiry is performed, bluez should flush its cache of
# previously discovered devices
flt = bluez.hci_filter_new()
bluez.hci_filter_all_events(flt)
bluez.hci_filter_set_ptype(flt, bluez.HCI_EVENT_PKT)
sock.setsockopt( bluez.SOL_HCI, bluez.HCI_FILTER, flt )
done = False
results = []
myFullList = []
for i in range(0, loop_count):
pkt = sock.recv(255)
ptype, event, plen = struct.unpack("BBB", pkt[:3])
#print "--------------"
if event == bluez.EVT_INQUIRY_RESULT_WITH_RSSI:
i =0
elif event == bluez.EVT_NUM_COMP_PKTS:
i =0
elif event == bluez.EVT_DISCONN_COMPLETE:
i =0
elif event == LE_META_EVENT:
subevent = pkt[3]
pkt = pkt[4:]
if subevent == EVT_LE_CONN_COMPLETE:
le_handle_connection_complete(pkt)
elif subevent == EVT_LE_ADVERTISING_REPORT:
#print "advertising report"
num_reports = pkt[0]
report_pkt_offset = 0
for i in range(0, num_reports):
if (DEBUG == True):
print
"-------------"
# print "\tfullpacket: ", printpacket(pkt)
print
"\tUDID: ", printpacket(pkt[report_pkt_offset - 22: report_pkt_offset - 6])
print
"\tMAJOR: ", printpacket(pkt[report_pkt_offset - 6: report_pkt_offset - 4])
print
"\tMINOR: ", printpacket(pkt[report_pkt_offset - 4: report_pkt_offset - 2])
print
"\tMAC address: ", packed_bdaddr_to_string(pkt[report_pkt_offset + 3:report_pkt_offset + 9])
# commented out - don't know what this byte is. It's NOT TXPower
txpower, = struct.unpack("b", pkt[report_pkt_offset - 2])
print
"\t(Unknown):", txpower
rssi, = struct.unpack("b", pkt[report_pkt_offset - 1])
print
"\tRSSI:", rssi
# build the return string
Adstring = packed_bdaddr_to_string(pkt[report_pkt_offset + 3:report_pkt_offset + 9])
Adstring += ","
Adstring += returnstringpacket(pkt[report_pkt_offset - 22: report_pkt_offset - 6])
Adstring += ","
Adstring += "%i" % returnnumberpacket(pkt[report_pkt_offset - 6: report_pkt_offset - 4])
Adstring += ","
Adstring += "%i" % returnnumberpacket(pkt[report_pkt_offset - 4: report_pkt_offset - 2])
Adstring += ","
Adstring += "%i" % pkt[report_pkt_offset - 2]
Adstring += ","
Adstring += "%i" % pkt[report_pkt_offset - 1]
# print "\tAdstring=", Adstring
myFullList.append(Adstring)
done = True
sock.setsockopt( bluez.SOL_HCI, bluez.HCI_FILTER, old_filter )
return myFullList
I get this error python 3.6.3:
Some data had been change in struct?