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parse NMEA

This commit is contained in:
KF7EEL 2020-11-22 12:51:11 -08:00
parent 04ae240924
commit 4a08e7f284
1 changed files with 13 additions and 7 deletions
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20
gps_data.py
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@ -56,6 +56,9 @@ import aprslib
import datetime
from bitarray.util import ba2int as ba2num
#Needed for working with NMEA
import pynmea2
# Does anybody read this stuff? There's a PEP somewhere that says I should do this.
__author__ = 'Cortney T. Buffington, N0MJS; Eric Craw, KF7EEL'
__copyright__ = 'Copyright (c) 2020 Cortney T. Buffington'
@ -167,20 +170,23 @@ class DATA_SYSTEM(HBSYSTEM):
# Use block 0 as trigger. $GPRMC must also be in string to indicate NMEA.
# This triggers the APRS upload
if btf == 0: #_seq == 12:
final_packet = bitarray(re.sub("\)|\(|bitarray|'", '', packet_assembly)).tobytes().decode('utf-8', 'ignore')
final_packet = str(bitarray(re.sub("\)|\(|bitarray|'", '', packet_assembly)).tobytes().decode('utf-8', 'ignore'))
nmea_parse = re.sub('A\*.*|.*\$', '', str(final_packet))
loc = pynmea2.parse(nmea_parse, check=False)
if '$GPRMC' in final_packet:
logger.info(final_packet + '\n')
logger.info('Latitude: ' + re.sub(',', '', final_packet[29:40]) + ' Longitude: ' + re.sub(',', '', final_packet[41:53]) + ' Direction: ' + re.sub(',', '', final_packet[58:62]) + ' Speed: ' + re.sub(',', '', final_packet[53:58]))
logger.info('Latitude: ' + str(loc.lat) + str(loc.lat_dir) + ' Longitude: ' + str(loc.lon) + str(loc.lon_dir) + ' Direction: ' + str(loc.true_course) + ' Speed: ' + str(loc.spd_over_grnd))
# Begin APRS format and upload
aprs_loc_packet = str(get_alias(int_id(_rf_src), subscriber_ids)) + '-' + str(user_ssid) + '>APRS,TCPIP*:/' + str(datetime.datetime.utcnow().strftime("%H%M%Sh")) + str(final_packet[29:36]) + str(final_packet[39]) + '/' + str(re.sub(',', '', final_packet[41:49])) + str(final_packet[52]) + '[/' + aprs_comment + ' DMR ID: ' + str(int_id(_rf_src))
# aprs_loc_packet = str(get_alias(int_id(_rf_src), subscriber_ids)) + '-' + str(user_ssid) + '>APRS,TCPIP*:/' + str(datetime.datetime.utcnow().strftime("%H%M%Sh")) + str(final_packet[29:36]) + str(final_packet[39]) + '/' + str(re.sub(',', '', final_packet[41:49])) + str(final_packet[52]) + '[/' + aprs_comment + ' DMR ID: ' + str(int_id(_rf_src))
aprs_loc_packet = str(get_alias(int_id(_rf_src), subscriber_ids)) + '-' + str(user_ssid) + '>APRS,TCPIP*:/' + str(datetime.datetime.utcnow().strftime("%H%M%Sh")) + str(loc.lat[0:7]) + str(loc.lat_dir) + '/' + str(loc.lon[0:8]) + str(loc.lon_dir) + '[/' + aprs_comment + ' DMR ID: ' + str(int_id(_rf_src))
logger.info(aprs_loc_packet)
try:
# Try parse of APRS packet. If it fails, it will not upload to APRS-IS
aprslib.parse(aprs_loc_packet)
AIS = aprslib.IS(aprs_callsign, passwd=aprs_passcode,host=aprs_server, port=aprs_port)
AIS.connect()
AIS.sendall(aprs_loc_packet)
AIS.close()
## AIS = aprslib.IS(aprs_callsign, passwd=aprs_passcode,host=aprs_server, port=aprs_port)
## AIS.connect()
## AIS.sendall(aprs_loc_packet)
## AIS.close()
except:
logger.info('Failed to parse packet. Packet may be deformed. Not uploaded.')
# Get callsign based on DMR ID