NAVTEX-Feature hinzugefügt. Daten nur über das Netzwerk
This commit is contained in:
parent
99dcf00242
commit
fb7c688a99
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@ -5,12 +5,15 @@ Generische Applikationsdaten
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import os
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from tracker import Tracker
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from navtex import NAVTEX
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class AppData():
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def __init__(self, logger, cfg):
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self.shutdown = False # Globaler Ausschalter
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self.log = logger
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if cfg['navtex']:
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self.navtex = NAVTEX(logger, cfg)
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self.track = Tracker(logger, cfg)
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self.frontend = None
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self.bv_lat = None
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@ -0,0 +1,197 @@
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"""
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DWD NAVTEX
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Funkmodul (radio) noch nicht implementiert mangels Hardware
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B1: Transmitter identity
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B2: Subject indicator character
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A Navigational warnings
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B Meteorological warnings
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C Ice reports
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D Search & rescue information, and pirate warnings
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E Meteorological forecasts
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F Pilot service messages
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G AIS messages (formerly Decca messages[6])
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H LORAN messages
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I Not used (formerly OMEGA messages[6])
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J SATNAV messages (i.e. GPS or GLONASS)
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K Other electronic navaid messages
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L Navigational warnings — additional to letter A (Should not be rejected by the receiver)
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T Test transmissions (UK only — not official)
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V Notice to fishermen (U.S. only — currently not used)
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W Environmental (U.S. only — currently not used)
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X Special services — allocation by IMO NAVTEX Panel
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Y Special services — allocation by IMO NAVTEX Panel
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Z No message on hand
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B3, B4: Serial number 01-99, 00: immediate printout
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Timecode: DDHHmm UTC MMM YY
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Sqlite database schema
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.schema message
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msgid TEXT PRIMARY KEY
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timestamp TEXT
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station TEXT
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content TEXT
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received TEXT
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"""
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import os
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import http.client
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import ssl
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import re
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import sqlite3
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import datetime
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from gi.repository import GLib
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class NAVTEX():
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def __init__(self, logger, cfg):
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self.log = logger
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self.source = cfg['ntx_source'].lower() # net | radio
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self.maxage = cfg['ntx_housekeeping'] # message hold time in hours
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self.running = False
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dbpath = os.path.join(cfg['histpath'], "navtex.db")
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try:
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self.conn = sqlite3.connect(dbpath)
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self.cur = self.conn.cursor()
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except:
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self.log.error(f"Failed to open local database: {dbpath}")
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return
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# Datenbank erstellen wenn nicht vorhanden
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sql = "SELECT name FROM sqlite_master WHERE type='table' AND name='message'"
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self.cur.execute(sql)
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if self.cur.fetchone() == None:
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sql = ("CREATE TABLE IF NOT EXISTS message ("
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"msgid TEXT PRIMARY KEY NOT NULL,"
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"station TEXT,"
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"timestamp TEXT,"
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"content TEXT NOT NULL,"
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"received TEXT NOT NULL DEFAULT current_timestamp)"
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)
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self.cur.execute(sql)
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self.log.info(f"Created NAVTEX database: {dbpath}")
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# Aktualisieren bei Programmstart
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# TODO Ausgeschaltet für Programmentwicklung
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if self.source == 'net':
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self.refresh()
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# In der Konfiguration werden Minuten angegeben
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GLib.timeout_add_seconds(cfg['ntx_refresh'] * 60, self.on_timer)
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self.running = True
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def __del__(self):
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self.conn.close()
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def on_timer(self):
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"""
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NAVTEX data handling
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"""
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self.refresh()
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self.housekeeping()
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return True
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def parse_message(self, plainmsg):
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"""
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Zeile 1: ZCZC<space><BBBB>
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Zeile 2: Stationskennung
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Zeile 3: Zeitstempel (meistens)
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Zeile 4 bis n-1: Nachrichteninhalt
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Zeile n: NNNN
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Je nach Code B1, B2 kann das folgende Format unterschiedlich sein
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"""
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msg = {}
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data = plainmsg.splitlines()
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msg['id'] = data[0][5:9]
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msg['station'] = data[1].strip()
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timestamp = data[2]
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if len(timestamp) == 17:
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day = int(timestamp[0:2])
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hour = int(timestamp[2:4])
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minute = int(timestamp[4:6])
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monmap = ('JAN', 'FEB', 'MAR', 'APR', 'MAY', 'JUN', 'JUL', 'AUG', 'SEP', 'OCT', 'NOV', 'DEC')
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month = monmap.index(timestamp[11:14]) + 1
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year = 2000 + int(timestamp[15:17])
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try:
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msg['timestamp'] = datetime.datetime(year, month, day, hour, minute, 0)
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except:
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msg['timestamp'] = None
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else:
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msg['timestamp'] = None
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return msg
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def dwd_get_data(self, local=False):
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"""
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net: Webseite auslesen
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https://www.dwd.de/DE/fachnutzer/schifffahrt/funkausstrahlung/navtex
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"""
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if local:
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# Für Tests um nicht permanent die Webseite abzufragen
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with open("490_emd.html", "r") as fh:
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content = fh.read()
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else:
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ssl_context = ssl.create_default_context()
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conn = http.client.HTTPSConnection("www.dwd.de", 443, context=ssl_context)
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url = "https://www.dwd.de/DE/fachnutzer/schifffahrt/funkausstrahlung/navtex/490_emd.html"
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try:
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conn.request("GET", url)
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response = conn.getresponse()
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if response.status == 200:
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content = response.read().decode()
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else:
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print(f"Error: {response.status}")
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return []
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except http.client.HTTPException as e:
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self.log.warning(f"HTTP error occurred: {e}")
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return []
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except ssl.SSLError as ssl_error:
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self.log.warning(f"SSL error occurred: {ssl_error}")
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return []
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expr = re.compile("(ZCZC.*?NNNN)", re.DOTALL)
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matches = re.findall(expr, content)
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return matches
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def refresh(self):
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self.log.info("NAVTEX refresh")
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messages = self.dwd_get_data(False)
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sql = "INSERT INTO message (msgid, station, content) VALUES (?, ?, ?)"
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for m in messages:
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msg = self.parse_message(m)
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self.cur.execute("SELECT COUNT(*) FROM message WHERE msgid=?", (msg['id'],))
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result = self.cur.fetchone()
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if result[0] == 0:
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self.log.debug(f"NAVTEX: insert new message '{msg['id']}'")
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self.cur.execute(sql, (msg['id'], msg['station'], m))
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self.conn.commit()
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def housekeeping(self):
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self.log.info("NAVTEX housekeeping")
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sql = "DELETE FROM message WHERE (julianday('now') - julianday(received)) * 24 > ?"
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self.cur.execute(sql, (self.maxage, ))
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def get_count(self):
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sql = "SELECT COUNT(*) FROM message"
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self.cur.execute(sql)
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result = self.cur.fetchone()
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return result[0]
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def get_ids(self):
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sql = "SELECT msgid FROM message"
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result = self.cur.execute(sql)
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msgids = []
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for row in result.fetchall():
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msgids.append(row[0])
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return msgids
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def get_message(self, msgid):
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sql = "SELECT content FROM message WHERE msgid=?"
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self.cur.execute(sql, (msgid, ))
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result = self.cur.fetchone()
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return result[0]
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@ -33,6 +33,12 @@ address = 0x76
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enabled = false
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port = /dev/ttyACM0
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[navtex]
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enabled = false
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source = net
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housekeeping = 72
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refresh = 30
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[opencpn]
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navobj = ~/.opencpn/navobj.xml
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config = ~/.opencpn/opencpn.conf
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@ -734,6 +734,12 @@ if __name__ == "__main__":
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if cfg['gps']:
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cfg['gps_port'] = config.get('gps', 'port')
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cfg['navtex'] = config.getboolean('navtex', 'enabled')
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if cfg['navtex']:
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cfg['ntx_source'] = config.get('navtex', 'source') # Datenquelle: net | radio
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cfg['ntx_housekeeping'] = config.getint('navtex', 'housekeeping') # Max. Nachrichtenalter in Stunden
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cfg['ntx_refresh'] = config.getint('navtex', 'refresh') # Aktualisierung alle <n> Minuten
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cfg['network'] = config.getboolean('network', 'enabled')
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if cfg['network']:
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cfg['net_addr'] = config.get('network', 'address')
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@ -773,7 +779,6 @@ if __name__ == "__main__":
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cfg['boat']['club'] = config.get('boat', 'club')
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cfg['boat']['team'] = config.get('boat', 'team')
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# Protokollierung
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loglevel = set_loglevel(cfg['loglevel'])
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init_logging(os.path.expanduser(cfg['logdir']), cfg['logfile'], loglevel)
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@ -796,7 +801,6 @@ if __name__ == "__main__":
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# Globale Daten, u.a. auch Shutdown-Indikator
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appdata = AppData(log, cfg)
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# Ggf. Simulationsdaten einschalten
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if cfg['simulation']:
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boatdata.enableSimulation()
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@ -32,6 +32,7 @@ from .dst810 import DST810
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from .epropulsion import EPropulsion
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from .keel import Keel
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from .mob import MOB
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from .navtex import Navtex
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from .racetracker import RaceTracker
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from .rollpitch import RollPitch
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from .skyview import SkyView
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@ -25,7 +25,7 @@ class Clock(Page):
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self.buttonlabel[1] = 'MODE'
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self.buttonlabel[2] = 'TZ'
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self.mode = ('A', 'D', 'T') # (A)nalog (D)igital (T)imer
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self.modeindex = 1
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self.modeindex = 0
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self.utc = True
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self.tzoffset = cfg['tzoffset']
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self.bv_lat = boatdata.getRef("LAT")
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@ -0,0 +1,112 @@
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"""
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NAVTEX
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- Meldungen anzeigen
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"""
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import cairo
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from .page import Page
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class Navtex(Page):
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def __init__(self, pageno, cfg, appdata, boatdata):
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super().__init__(pageno, cfg, appdata, boatdata)
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self.disabled = self.app.navtex is None
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self.ids = self.app.navtex.get_ids()
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if len(self.ids) > 0:
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self.current = 1
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self.msgid = self.ids[self.current - 1]
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else:
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self.current = 0
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self.msgid = None
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self.buttonlabel[1] = 'PREV'
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self.buttonlabel[2] = 'NEXT'
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self.buttonlabel[5] = 'MORE'
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self.skip = 0
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def handle_key(self, buttonid):
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if buttonid == 1:
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if self.current > 1:
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self.current -= 1
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else:
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self.current = len(self.ids)
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self.msgid = self.ids[self.current - 1]
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self.skip = 0
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return True
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if buttonid == 2:
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if self.current < len(self.ids):
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self.current += 1
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else:
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self.current = 1
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self.msgid = self.ids[self.current - 1]
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self.skip = 0
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return True
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if buttonid == 5:
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self.skip += 1
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return True
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return False
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def draw(self, ctx):
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# Title
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ctx.select_font_face("Ubuntu", cairo.FontSlant.NORMAL, cairo.FontWeight.BOLD)
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ctx.set_font_size(24)
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ctx.move_to(8, 40)
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ctx.show_text("NAVTEX")
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ctx.set_line_width(1)
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ctx.move_to(4.5, 42.5)
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ctx.line_to(395.5, 42.5)
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ctx.move_to(4.5, 272.5)
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ctx.line_to(395.5, 272.5)
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ctx.move_to(4.5, 32.5)
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ctx.line_to(4.5, 272.5)
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ctx.move_to(396.5, 32.5)
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ctx.line_to(396.5, 272.5)
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#ctx.rectangle(4.5, 20.5, 392, 250)
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ctx.stroke()
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ctx.set_font_size(16)
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if self.disabled:
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ctx.move_to(8, 75)
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ctx.show_text("Feature ist disabled by configuration")
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return
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ctx.move_to(150, 40)
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self.draw_text_ralign(ctx, 392, 38, "Message {} of {}".format(self.current, len(self.ids)))
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ctx.select_font_face("AtariST8x16SystemFont")
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ctx.move_to(8, 59)
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if self.current == 0:
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ctx.show_text("NIL")
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return
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# 48 Zeichen je Zeile möglich
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# Max. 14 Zeilen auf dem Bildschirm
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rawmsg = self.app.navtex.get_message(self.msgid).splitlines()
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output = []
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for line in rawmsg:
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if len(line) <= 48:
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output.append(line)
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else:
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i = 0
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j = 48
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while i < len(line):
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output.append(line[i:j])
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i += 48
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j += 48
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x = 8
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y = 59
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n = 0
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for line in output:
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if n >= self.skip:
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ctx.move_to(x, y)
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ctx.show_text(line)
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y += 16
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n += 1
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if n >= 14 + self.skip:
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break
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@ -190,7 +190,7 @@ class RaceTracker(Page):
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Absätzen auf dem Bildschirma ausgibt.
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"""
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x = 8
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y = 50
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y = 48
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ctx.select_font_face("Ubuntu", cairo.FontSlant.NORMAL, cairo.FontWeight.BOLD)
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ctx.set_font_size(24)
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ctx.move_to(x, y)
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@ -199,7 +199,7 @@ class RaceTracker(Page):
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y += 25
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ctx.set_font_size(16)
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ctx.move_to(x, y)
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ctx.show_text("Disabled by 'NONE in configuration'.")
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ctx.show_text("Disabled by 'NONE' in configuration.")
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y += 30
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ctx.move_to(x, y)
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ctx.show_text("Currently only tracker types 'HERO' and 'LOCAL'")
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@ -225,7 +225,7 @@ class RaceTracker(Page):
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def draw_local(self, ctx):
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x = 8
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x1 = 130
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y = 50
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y = 48
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ctx.select_font_face("Ubuntu", cairo.FontSlant.NORMAL, cairo.FontWeight.BOLD)
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ctx.set_font_size(24)
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ctx.move_to(x, y)
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@ -33,7 +33,6 @@ import http.client
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import ssl
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import json
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import socket
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import ssl
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import math
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import subprocess # für Audioausgabe / mpg123
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