mirror of
https://github.com/DJ2LS/FreeDATA
synced 2024-05-14 08:04:33 +00:00
118 lines
4.1 KiB
Python
118 lines
4.1 KiB
Python
import structlog
|
|
import threading
|
|
import helpers
|
|
import time
|
|
import modem
|
|
import base64
|
|
from global_instances import ARQ, AudioParam, Beacon, Channel, Daemon, HamlibParam, ModemParam, Station, Statistics, TCIParam, TNC
|
|
import sock
|
|
import ujson as json
|
|
|
|
|
|
class broadcastHandler:
|
|
"""Terminal Node Controller for FreeDATA"""
|
|
|
|
log = structlog.get_logger("BROADCAST")
|
|
|
|
def __init__(self) -> None:
|
|
self.fec_wakeup_callsign = bytes()
|
|
self.longest_duration = 6
|
|
self.wakeup_received = False
|
|
self.broadcast_timeout_reached = False
|
|
self.broadcast_payload_bursts = 1
|
|
self.broadcast_watchdog = threading.Thread(
|
|
target=self.watchdog, name="watchdog thread", daemon=True
|
|
)
|
|
self.broadcast_watchdog.start()
|
|
|
|
def received_fec_wakeup(self, data_in: bytes):
|
|
self.fec_wakeup_callsign = helpers.bytes_to_callsign(bytes(data_in[1:7]))
|
|
self.wakeup_mode = int.from_bytes(bytes(data_in[7:8]), "big")
|
|
bursts = int.from_bytes(bytes(data_in[8:9]), "big")
|
|
self.wakeup_received = True
|
|
|
|
modem.RECEIVE_DATAC4 = True
|
|
|
|
self.send_data_to_socket_queue(
|
|
freedata="tnc-message",
|
|
fec="wakeup",
|
|
mode=self.wakeup_mode,
|
|
bursts=bursts,
|
|
dxcallsign=str(self.fec_wakeup_callsign, "UTF-8")
|
|
)
|
|
|
|
self.log.info(
|
|
"[TNC] FRAME WAKEUP RCVD ["
|
|
+ str(self.fec_wakeup_callsign, "UTF-8")
|
|
+ "] ", mode=self.wakeup_mode, bursts=bursts,
|
|
)
|
|
|
|
def received_fec(self, data_in: bytes):
|
|
print(self.fec_wakeup_callsign)
|
|
|
|
self.send_data_to_socket_queue(
|
|
freedata="tnc-message",
|
|
fec="broadcast",
|
|
dxcallsign=str(self.fec_wakeup_callsign, "UTF-8"),
|
|
data=base64.b64encode(data_in[1:]).decode("UTF-8")
|
|
)
|
|
|
|
self.log.info("[TNC] FEC DATA RCVD")
|
|
|
|
def send_data_to_socket_queue(self, **jsondata):
|
|
"""
|
|
Send information to the UI via JSON and the sock.SOCKET_QUEUE.
|
|
|
|
Args:
|
|
Dictionary containing the data to be sent, in the format:
|
|
key=value, for each item. E.g.:
|
|
self.send_data_to_socket_queue(
|
|
freedata="tnc-message",
|
|
arq="received",
|
|
status="success",
|
|
uuid=self.transmission_uuid,
|
|
timestamp=timestamp,
|
|
mycallsign=str(self.mycallsign, "UTF-8"),
|
|
dxcallsign=str(Station.dxcallsign, "UTF-8"),
|
|
dxgrid=str(Station.dxgrid, "UTF-8"),
|
|
data=base64_data,
|
|
)
|
|
"""
|
|
|
|
# add mycallsign and dxcallsign to network message if they not exist
|
|
# and make sure we are not overwrite them if they exist
|
|
try:
|
|
if "mycallsign" not in jsondata:
|
|
jsondata["mycallsign"] = str(Station.mycallsign, "UTF-8")
|
|
if "dxcallsign" not in jsondata:
|
|
jsondata["dxcallsign"] = str(Station.dxcallsign, "UTF-8")
|
|
except Exception as e:
|
|
self.log.debug("[TNC] error adding callsigns to network message", e=e)
|
|
|
|
# run json dumps
|
|
json_data_out = json.dumps(jsondata)
|
|
|
|
self.log.debug("[TNC] send_data_to_socket_queue:", jsondata=json_data_out)
|
|
# finally push data to our network queue
|
|
sock.SOCKET_QUEUE.put(json_data_out)
|
|
|
|
def watchdog(self):
|
|
while 1:
|
|
if self.wakeup_received:
|
|
timeout = time.time() + (self.longest_duration * self.broadcast_payload_bursts) + 2
|
|
while time.time() < timeout:
|
|
threading.Event().wait(0.01)
|
|
|
|
self.broadcast_timeout_reached = True
|
|
|
|
self.log.info(
|
|
"[TNC] closing broadcast slot ["
|
|
+ str(self.fec_wakeup_callsign, "UTF-8")
|
|
+ "] ", mode=self.wakeup_mode, bursts=self.broadcast_payload_bursts,
|
|
)
|
|
# TODO: We need a dynamic way of modifying this
|
|
modem.RECEIVE_DATAC4 = False
|
|
self.fec_wakeup_callsign = bytes()
|
|
self.wakeup_received = False
|
|
else:
|
|
threading.Event().wait(0.01)
|