def init_hci(iface: str = 'hci0'):
# hciconfig <hci> up 的前提是 rfkill 先 unblock
subprocess.check_output('rfkill unblock %d' % find_rfkill_devid(iface),
stderr=STDOUT,
timeout=5,
shell=True)
subprocess.check_output('hciconfig {} up'.format(iface),
stderr=STDOUT,
timeout=5,
shell=True)
subprocess.check_output('systemctl restart bluetooth.service',
stderr=STDOUT,
timeout=5,
shell=True)
hci = HCI(iface)
# 下面在发送各种 HCI command 时，如果出现如下异常：
# BlockingIOError: [Errno 11] Resource temporarily unavailable
# 那么可能是 hci socket 被设为了 non-blocking mode。
hci.inquiry_cancel()
hci.exit_periodic_inquiry_mode()
hci.write_scan_enable() # No scan enabled
event_params = hci.le_set_advertising_enable() # Advertising is disabled
if event_params['Status'] != 0x00:
#print(WARNING, 'Status of HCI_LE_Set_Advertising_Enable command: 0x%02x'%event_params['Status'])
pass
try:
hci.le_set_scan_enable({
'LE_Scan_Enable': 0x00, # Scanning disabled
'Filter_Duplicates': 0x01 # Ignored
})
except RuntimeError as e:
#print(WARNING, e)
pass
hci.set_event_filter({'Filter_Type': 0x00}) # Clear All Filters
event_params = hci.read_bdaddr()
if event_params['Status'] != 0:
raise RuntimeError
else:
local_bd_addr = event_params['BD_ADDR'].upper()
# Clear bluetoothd cache
cache_path = PosixPath('/var/lib/bluetooth/') / local_bd_addr / 'cache'
if cache_path.exists():
for file in cache_path.iterdir():
os.remove(file)
hci.close()
def init_hci(iface='hci0'):
hci = HCI(iface)
exitcode, output = subprocess.getstatusoutput('rfkill unblock %d' %
find_rfkill_devid(iface))
if exitcode != 0:
logger.error('rfkill: ' + output)
sys.exit(exitcode)
exitcode, output = subprocess.getstatusoutput("hciconfig up " + iface)
if exitcode != 0:
logger.error("Failed to up " + iface)
sys.exit(exitcode)
else:
time.sleep(0.5)
# hci.reset()
hci.inquiry_cancel()
hci.exit_periodic_inquiry_mode()
hci.write_scan_enable() # No scan enabled
event_params = hci.le_set_advertising_enable() # Advertising is disabled
if event_params['Status'] != 0x00:
#print(WARNING, 'Status of HCI_LE_Set_Advertising_Enable command: 0x%02x'%event_params['Status'])
pass
try:
hci.le_set_scan_enable({
'LE_Scan_Enable': 0x00, # Scanning disabled
'Filter_Duplicates': 0x01 # Ignored
})
except RuntimeError as e:
#print(WARNING, e)
pass
hci.set_event_filter({'Filter_Type': 0x00}) # Clear All Filters
event_params = hci.read_bdaddr()
if event_params['Status'] != 0:
raise RuntimeError
else:
local_bd_addr = event_params['BD_ADDR'].upper()
# Clear bluetoothd cache
cache_path = PosixPath('/var/lib/bluetooth/') / local_bd_addr / 'cache'
if cache_path.exists():
for file in cache_path.iterdir():
os.remove(file)