raw_parser: Added ukhas format encoder

firmware/tools/raw_parser.py

@@ -12,6 +12,7 @@ else will be ignored.
 
 import re
 import sys
+from ukhas_format import *
 from datetime import datetime
 from math import log, exp
 
@@ -135,4 +136,5 @@ with open(file_name, 'r') as data_file:
 
     # Print data
     for datum in data:
+        ukhas_format(datum)
         print "%s: %s, %s" % ((str(datum['time']),) + datum['coords'][:2])

firmware/tools/ukhas_format.py

@@ -0,0 +1,35 @@
+"""
+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)