pico-tracker/firmware/tools/ukhas_format.py

36 wiersze
911 B
Python
Czysty Zwykły widok Historia

2015-08-01 17:23:05 +00:00
"""
Formats ukhas telemetry strings for the pico tracker.
Expects to be passed a dict, with keys 'time', 'coords',
'battery', 'solar', 'temperature' and 'satellites'.
"""
import crc16
from datetime import datetime
"""
Builds ukhas string from supplied datum
"""
def ukhas_format(datum):
callsign = "UBSEDSX"
# Time
time_str = "{:02}:{:02}:{:02}".format(
datum['time'].hour, datum['time'].minute, datum['time'].second)
# Location
coords = datum['coords']
location_str = "{:.6f},{:.6f},{}".format(
coords[0], coords[1], int(round(coords[2])))
# Everything
ukhas_str = "{},{},{},{},{},{},{},-1".format(
callsign, time_str, location_str, datum['satellites'],
datum['battery'], datum['solar'], datum['temperature']);
# Checksum
checksum = "{:04X}".format(crc16.crc16xmodem(ukhas_str))
return "$${}*{}".format(ukhas_str, checksum)