Ich habe Fehler bei:Python: Fehler: (9, ‚Bad Dateideskriptors‘)
"File "/home/pi/blescan.py", line 78, in hci_le_set_scan_parameters
old_filter = sock.getsockopt(bluez.SOL_HCI, bluez.HCI_FILTER, 14)
error: (9, 'Bad file descriptor')"
Ich bin nicht sicher, was die Ursache des Fehlers ist, und ich habe Welche Lösung auch immer versucht, die online verfügbar ist, aber es ergab sich der gleiche Fehler.
DEBUG = False
import os
import sys
import struct
import bluetooth._bluetooth as bluez
from time import gmtime, strftime
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 += struct.unpack("B",c)[0] * multiple
multiple = 1
return myInteger
def returnstringpacket(pkt):
myString = "";
for c in pkt:
myString += "%02x" %struct.unpack("B",c)[0]
return myString
def printpacket(pkt):
for c in pkt:
sys.stdout.write("%02x " % struct.unpack("B",c)[0])
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):
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)
CurrentTime = strftime("%H:%M,%S", gmtime())
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, = struct.unpack("B", 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 = struct.unpack("B", pkt[0])[0]
report_pkt_offset = 0
for i in range(0, num_reports):
if (DEBUS == True):
print "-------------"
print "\tMAC address: ", packed_bdaddr_to_string(pkt[report_pkt_offset + 3:report_pkt_offset + 9])
TxPower, = struct.unpack("b", pkt[report_pkt_offset -2])
print "\tTxpower:", -TxPower
rssi, = struct.unpack("b", pkt[report_pkt_offset -1])
print "\tRSSI:", rssi
print "\tTime:", CurrentTime
# 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" % struct.unpack("b", pkt[report_pkt_offset -2])
Adstring += ","
Adstring += "%i" % struct.unpack("b", 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
Voll Fehler Traceback:
Traceback (most recent call last):
File "/home/pi/blescan.py", line 79, in hci_le_set_scan_parameters
old_filter = socket.getsockopt(bluez.SOL_HCI, bluez.HCI_FILTER, 14)
error: (9, 'Bad file descriptor')
Traceback (most recent call last):
File "/home/pi/testblescan.py", line 15, in <module>
blescan.hci_enable_le_scan(socket)
File "/home/pi/blescan.py", line 67, in hci_enable_le_scan
hci_toggle_le_scan(socket, 0x01)
File "/home/pi/blescan.py", line 74, in hci_toggle_le_scan
bluez.hci_send_cmd(socket, OGF_LE_CTL, OCF_LE_SET_SCAN_ENABLE, cmd_pkt)
error: (9, 'Bad file descriptor')
Bitte fügen Sie den vollständigen Fehler Zurückverfolgungs auf Ihre Frage! –
@KlausD. Ich bin neu bei Python, mit sehr wenig Wissen und Erfahrung. Ich schätze es sehr, wenn Sie mir den Fehler erklären könnten. Vielen Dank. –
Der Fehler weist darauf hin, dass sich der Socket in einem Zustand befindet, in dem er Ihre Befehle nicht akzeptieren kann. Dies geschieht normalerweise, wenn Sie versuchen, einen bereits geschlossenen Socket erneut zu verwenden, oder er wurde anderweitig geschlossen. –