def input_line(s):
res = bytearray()
s.read(s.available())
while True:
if s.available() < 1:
sfw.kick()
sleep(1)
continue
c = s.read()[0]
if c == __ORD('\r') or c == __ORD('\n'):
break
if c == __ORD('\b') and len(res) > 0:
del res[-1]
print('\b ', sep='', end='')
else:
res.append(c)
print(chr(c), sep='', end='')
print()
return str(res)
def do_modem_passthru(s):
print("Modem passthrough...[^ to exit]")
modem.bypass(1)
ms = streams.serial(polaris.gsm.SERIAL, baud=115200, set_default=False)
ms.write('ATE1\r')
while True:
sfw.kick()
# modem to stream
n = ms.available()
if n > 0:
s.write(ms.read(n))
# stream to modem
n = s.available()
if n > 0:
b = s.read(n)
if n == 1 and b[0] == __ORD('^'):
break
ms.write(b)
else:
sleep(1)
ms.write('ATE0\r')
modem.bypass(0)
print("Starting Accelerometer...")
import accel
accel.start()
print("Starting GNSS...")
gnss.start()
gnss.set_rate(2000)
print("Starting Modem...")
modem.startup()
# enable modem/gnss utilities
utils.modem = modem
utils.gnss = gnss
sfw.watchdog(0, 30000)
sfw.kick()
if utils.check_terminal(s):
utils.do_terminal(s)
minfo = gsm.mobile_info()
print("Modem:", minfo)
# enable SMS checking
utils.check_sms = True
except Exception as e:
print("Failed init hw with", e)
sleep(500)
mcu.reset()
# GATHERING SETTINGS
def write(self, packet):
gpio.high(RS485EN)
self.port.write(packet)
gpio.low(RS485EN)
sfw.kick()
def read(self):
gpio.low(RS485EN)
bc = self.port.available()
sfw.kick()
return self.port.read(bc)
def get_packets(sleep_time, iterations_per_channel, activity_percentage, scan_time_interval):
print("Sniffing...")
count = 0
while True:
sfw.kick()
payloads = []
if count % 60 == 0:
print("Initializing RTC")
init_rtc()
sfw.kick()
count = (count + 1) % 60
# If timer has reached the interval, perform another scan
if t.get() >= scan_time_interval:
t.reset()
print()
scan_for_active_channels(1000, 2)
# Else, get packets
else:
try:
for channel in range(1, number_of_channels + 1):
print("Checking channel", channel)
if channel_activity_stats[channel - 1] >= activity_percentage:
print("Starting sniffer on channel", channel)
wifi_driver.start_sniffer(
packet_types=[wifi_driver.WIFI_PKT_MGMT],
channels = [channel],
mgmt_subtypes=[wifi_driver.WIFI_PKT_MGMT_PROBE_REQ],
direction = wifi_driver.WIFI_DIR_TO_NULL_FROM_NULL,
pkt_buffer=32,
max_payloads=0,
hop_time=2000)
print("Start acquisition for", iterations_per_channel, "seconds")
for iteration in range(iterations_per_channel):
print(gc.info())
# Sleep for a given time
sleep(sleep_time)
# Sniff packets
pkts = wifi_driver.sniff()
now = rtc.get_utc()
for pkt in pkts:
payloads.append({
'scanner_id': mac_addr,
'type': pkt[0],
'subtype': pkt[1],
'mac1': pkt[7],
'mac2': pkt[8],
'mac3': pkt[9],
'mac4': pkt[10],
'rssi': pkt[11],
'channel': pkt[12],
'timestamp': now.tv_seconds + (now.tv_microseconds/1000000) #mantenere solo i secondi
})
print("Sniffed", len(pkts), "in channel", channel)
# Stop sniffer
print("STOP")
wifi_driver.stop_sniffer()
sfw.kick()
print("STOPPED")
sleep(500)
print("Connecting to Wi-Fi network")
try:
sfw.kick()
for j in range(3):
try:
wifi.link(SSID, wifi.WIFI_WPA2, PASSWORD)
break
except Exception as e:
print("Can't link",e)
sleep(100)
else:
mcu.reset()
sleep(100)
sleep(100)
print(gc.info())
print("Storing", len(payloads), "packets in database")
sfw.kick()
page = 0
page_size = 5
page_num = math.ceil(len(payloads) / page_size)
device.connect()
page = 0
page_size = 5
page_num = math.ceil(len(payloads) / page_size)
while page < page_num:
print(page + 1, "/", page_num)
for j in range(3):
try:
data=json.dumps({"data":payloads[page*page_size:(page+1)*page_size]})
device.publish(data,TAG)
break
except Exception as e:
print("Can't post data",e)
sleep(100)
else:
mcu.reset()
page = page + 1
sfw.kick()
sleep(5000)
wifi.unlink()
except Exception as e:
print("Error!", e)
sleep(100)
except Exception as e:
print("Error while sniffing:", e)