ogn-python/ogn/aprs_utils.py

43 wiersze
1.1 KiB
Python

from datetime import datetime, timedelta
import math
from ogn.exceptions import AmbigousTimeError
kmh2kts = 0.539957
feet2m = 0.3048
ms2fpm = 196.85
kts2kmh = 1 / kmh2kts
m2feet = 1 / feet2m
fpm2ms = 1 / ms2fpm
def dmsToDeg(dms):
absDms = abs(dms)
d = math.floor(absDms)
m = (absDms - d) * 100 / 60
return d + m
def createTimestamp(hhmmss, reference):
packet_time = datetime.strptime(hhmmss, '%H%M%S').time()
timestamp = datetime.combine(reference, packet_time)
if reference.hour == 23 and timestamp.hour == 0:
timestamp = timestamp + timedelta(days=1)
elif reference.hour == 0 and timestamp.hour == 23:
timestamp = timestamp - timedelta(days=1)
if reference - timestamp > timedelta(hours=1):
raise AmbigousTimeError(reference, packet_time)
return timestamp
def create_aprs_login(user_name, pass_code, app_name, app_version, aprs_filter=None):
if not aprs_filter:
return "user %s pass %s vers %s %s\n" % (user_name, pass_code, app_name, app_version)
else:
return "user %s pass %s vers %s %s filter %s\n" % (user_name, pass_code, app_name, app_version, aprs_filter)