kopia lustrzana https://github.com/inmcm/micropyGPS
Merge d4ae561d02 into f6c2b76a3b
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GitHub
commit
e1166a0ca2
187
micropyGPS.py
187
micropyGPS.py
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@ -1,3 +1,5 @@
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# -*- coding: utf-8 -*-
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"""
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# MicropyGPS - a GPS NMEA sentence parser for Micropython/Python 3.X
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# Copyright (c) 2017 Michael Calvin McCoy (calvin.mccoy@protonmail.com)
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@ -43,9 +45,7 @@ class MicropyGPS(object):
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Setup GPS Object Status Flags, Internal Data Registers, etc
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local_offset (int): Timzone Difference to UTC
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location_formatting (str): Style For Presenting Longitude/Latitude:
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Decimal Degree Minute (ddm) - 40° 26.767′ N
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Degrees Minutes Seconds (dms) - 40° 26′ 46″ N
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Decimal Degrees (dd) - 40.446° N
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"""
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#####################
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@ -86,12 +86,25 @@ class MicropyGPS(object):
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self.geoid_height = 0.0
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# GPS Info
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self.satellites_in_view = 0
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self.gsatellites_in_view = 0
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self.rsatellites_in_view = 0
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self.esatellites_in_view = 0
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self.satellites_in_use = 0
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self.satellites_used = []
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self.last_sv_sentence = 0
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self.total_sv_sentences = 0
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self.satellite_data = dict()
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self.last_gsv_sentence = 0
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self.total_gsv_sentences = 0
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self.gsatellite_data = dict()
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self.last_rsv_sentence = 0
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self.total_rsv_sentences = 0
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self.rsatellite_data = dict()
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self.last_esv_sentence = 0
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self.total_esv_sentences = 0
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self.esatellite_data = dict()
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self.hdop = 0.0
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self.pdop = 0.0
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self.vdop = 0.0
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@ -477,20 +490,20 @@ class MicropyGPS(object):
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"""Parse Satellites in View (GSV) sentence. Updates number of SV Sentences,the number of the last SV sentence
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parsed, and data on each satellite present in the sentence"""
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try:
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num_sv_sentences = int(self.gps_segments[1])
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current_sv_sentence = int(self.gps_segments[2])
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sats_in_view = int(self.gps_segments[3])
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num_gsv_sentences = int(self.gps_segments[1])
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current_gsv_sentence = int(self.gps_segments[2])
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gsats_in_view = int(self.gps_segments[3])
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except ValueError:
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return False
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# Create a blank dict to store all the satellite data from this sentence in:
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# satellite PRN is key, tuple containing telemetry is value
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satellite_dict = dict()
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gsatellite_dict = dict()
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# Calculate Number of Satelites to pull data for and thus how many segment positions to read
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if num_sv_sentences == current_sv_sentence:
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if num_gsv_sentences == current_gsv_sentence:
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# Last sentence may have 1-4 satellites; 5 - 20 positions
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sat_segment_limit = (sats_in_view - ((num_sv_sentences - 1) * 4)) * 5
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sat_segment_limit = (gsats_in_view - ((num_gsv_sentences - 1) * 4)) * 5
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else:
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sat_segment_limit = 20 # Non-last sentences have 4 satellites and thus read up to position 20
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@ -523,19 +536,151 @@ class MicropyGPS(object):
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break
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# Add Satellite Data to Sentence Dict
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satellite_dict[sat_id] = (elevation, azimuth, snr)
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gsatellite_dict[sat_id] = (elevation, azimuth, snr)
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# Update Object Data
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self.total_sv_sentences = num_sv_sentences
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self.last_sv_sentence = current_sv_sentence
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self.satellites_in_view = sats_in_view
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self.total_gsv_sentences = num_gsv_sentences
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self.last_gsv_sentence = current_gsv_sentence
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self.gsatellites_in_view = gsats_in_view
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# For a new set of sentences, we either clear out the existing sat data or
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# update it as additional SV sentences are parsed
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if current_sv_sentence == 1:
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self.satellite_data = satellite_dict
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if current_gsv_sentence == 1:
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self.gsatellite_data = gsatellite_dict
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else:
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self.satellite_data.update(satellite_dict)
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self.gsatellite_data.update(gsatellite_dict)
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return True
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def glgsv(self):
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"""Parse Satellites in View (GSV) sentence. Updates number of SV Sentences,the number of the last SV sentence
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parsed, and data on each satellite present in the sentence"""
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try:
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num_rsv_sentences = int(self.gps_segments[1])
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current_rsv_sentence = int(self.gps_segments[2])
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rsats_in_view = int(self.gps_segments[3])
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except ValueError:
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return False
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# Create a blank dict to store all the satellite data from this sentence in:
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# satellite PRN is key, tuple containing telemetry is value
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rsatellite_dict = dict()
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# Calculate Number of Satelites to pull data for and thus how many segment positions to read
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if num_rsv_sentences == current_rsv_sentence:
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# Last sentence may have 1-4 satellites; 5 - 20 positions
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sat_segment_limit = (rsats_in_view - ((num_rsv_sentences - 1) * 4)) * 5
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else:
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sat_segment_limit = 20 # Non-last sentences have 4 satellites and thus read up to position 20
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# Try to recover data for up to 4 satellites in sentence
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for sats in range(4, sat_segment_limit, 4):
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# If a PRN is present, grab satellite data
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if self.gps_segments[sats]:
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try:
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sat_id = int(self.gps_segments[sats])
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except (ValueError,IndexError):
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return False
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try: # elevation can be null (no value) when not tracking
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elevation = int(self.gps_segments[sats+1])
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except (ValueError,IndexError):
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elevation = None
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try: # azimuth can be null (no value) when not tracking
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azimuth = int(self.gps_segments[sats+2])
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except (ValueError,IndexError):
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azimuth = None
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try: # SNR can be null (no value) when not tracking
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snr = int(self.gps_segments[sats+3])
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except (ValueError,IndexError):
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snr = None
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# If no PRN is found, then the sentence has no more satellites to read
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else:
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break
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# Add Satellite Data to Sentence Dict
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rsatellite_dict[sat_id] = (elevation, azimuth, snr)
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# Update Object Data
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self.total_rsv_sentences = num_rsv_sentences
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self.last_rsv_sentence = current_rsv_sentence
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self.rsatellites_in_view = rsats_in_view
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# For a new set of sentences, we either clear out the existing sat data or
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# update it as additional SV sentences are parsed
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if current_rsv_sentence == 1:
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self.rsatellite_data = rsatellite_dict
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else:
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self.rsatellite_data.update(rsatellite_dict)
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return True
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def gagsv(self):
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"""Parse Satellites in View (GSV) sentence. Updates number of SV Sentences,the number of the last SV sentence
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parsed, and data on each satellite present in the sentence"""
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try:
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num_esv_sentences = int(self.gps_segments[1])
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current_esv_sentence = int(self.gps_segments[2])
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esats_in_view = int(self.gps_segments[3])
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except ValueError:
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return False
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# Create a blank dict to store all the satellite data from this sentence in:
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# satellite PRN is key, tuple containing telemetry is value
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esatellite_dict = dict()
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# Calculate Number of Satelites to pull data for and thus how many segment positions to read
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if num_esv_sentences == current_esv_sentence:
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# Last sentence may have 1-4 satellites; 5 - 20 positions
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sat_segment_limit = (esats_in_view - ((num_esv_sentences - 1) * 4)) * 5
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else:
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sat_segment_limit = 20 # Non-last sentences have 4 satellites and thus read up to position 20
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# Try to recover data for up to 4 satellites in sentence
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for sats in range(4, sat_segment_limit, 4):
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# If a PRN is present, grab satellite data
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if self.gps_segments[sats]:
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try:
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sat_id = int(self.gps_segments[sats])
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except (ValueError,IndexError):
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return False
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try: # elevation can be null (no value) when not tracking
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elevation = int(self.gps_segments[sats+1])
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except (ValueError,IndexError):
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elevation = None
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try: # azimuth can be null (no value) when not tracking
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azimuth = int(self.gps_segments[sats+2])
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except (ValueError,IndexError):
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azimuth = None
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try: # SNR can be null (no value) when not tracking
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snr = int(self.gps_segments[sats+3])
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except (ValueError,IndexError):
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snr = None
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# If no PRN is found, then the sentence has no more satellites to read
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else:
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break
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# Add Satellite Data to Sentence Dict
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esatellite_dict[sat_id] = (elevation, azimuth, snr)
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# Update Object Data
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self.total_esv_sentences = num_esv_sentences
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self.last_esv_sentence = current_esv_sentence
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self.esatellites_in_view = esats_in_view
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# For a new set of sentences, we either clear out the existing sat data or
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# update it as additional SV sentences are parsed
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if current_esv_sentence == 1:
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self.esatellite_data = esatellite_dict
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else:
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self.esatellite_data.update(esatellite_dict)
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return True
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@ -819,7 +964,7 @@ class MicropyGPS(object):
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'GPGGA': gpgga, 'GLGGA': gpgga,
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'GPVTG': gpvtg, 'GLVTG': gpvtg,
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'GPGSA': gpgsa, 'GLGSA': gpgsa,
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'GPGSV': gpgsv, 'GLGSV': gpgsv,
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'GPGSV': gpgsv, 'GLGSV': glgsv, 'GAGSV': gagsv,
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'GPGLL': gpgll, 'GLGLL': gpgll,
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'GNGGA': gpgga, 'GNRMC': gprmc,
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'GNVTG': gpvtg, 'GNGLL': gpgll,
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