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add UDT UAB criteria to reduce inaccurate packets

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This commit is contained in:
KF7EEL 2020-12-26 13:43:19 -08:00
parent 4900f859f8
commit c6ebf86b0f
1 changed files with 20 additions and 16 deletions
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20
gps_data.py
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@ -94,6 +94,7 @@ __status__ = 'pre-alpha'
# AT-D878 - Compressed UDP
# MD-380 - Unified Data Transport
hdr_type = ''
btf = ''
# From dmr_utils3, modified to decode entire packet. Works for 1/2 rate coded data.
def decode_full(_data):
@ -286,11 +287,13 @@ class DATA_SYSTEM(HBSYSTEM):
def dmrd_received(self, _peer_id, _rf_src, _dst_id, _seq, _slot, _call_type, _frame_type, _dtype_vseq, _stream_id, _data):
# Capture data headers
global n_packet_assembly
global n_packet_assembly, hdr_type
#logger.info(_dtype_vseq)
logger.info(time.strftime('%H:%M:%S - %m/%d/%y'))
logger.info('Special debug for developement:')
logger.info(ahex(bptc_decode(_data)))
#logger.info(hdr_type)
#logger.info(type(ba2num(bptc_decode(_data)[69:72])))
if int_id(_dst_id) == data_id:
#logger.info(type(_seq))
if type(_seq) is bytes:
@ -302,8 +305,8 @@ class DATA_SYSTEM(HBSYSTEM):
# If 5 is at position 3, then this should be a UDT header for MD-380 type radios.
# Coordinates are usually in the very next block after the header, we will discard the rest.
#logger.info(ahex(bptc_decode(_data)[0:10]))
if _call_type == call_type and header_ID(_data)[3] == '5' or (_call_type == 'vcsbk' and header_ID(_data)[3] == '5'):
global udt_block, hdr_type
if _call_type == call_type and header_ID(_data)[3] == '5' and ba2num(bptc_decode(_data)[69:72]) == 0 or (_call_type == 'vcsbk' and header_ID(_data)[3] == '5' and ba2num(bptc_decode(_data)[69:72]) == 0):
global udt_block
logger.info('MD-380 type UDT header detected. Very next packet should be location.')
hdr_type = '380'
if _dtype_vseq == 6 and hdr_type == '380' or _dtype_vseq == 'group' and hdr_type == '380':
@ -312,6 +315,7 @@ class DATA_SYSTEM(HBSYSTEM):
udt_block = udt_block - 1
if udt_block == 0:
logger.info('MD-380 type packet. This should contain the GPS location.')
logger.info('Packet: ' + str(ahex(bptc_decode(_data))))
if ba2num(bptc_decode(_data)[1:2]) == 1:
lat_dir = 'N'
if ba2num(bptc_decode(_data)[1:2]) == 0:
@ -355,21 +359,21 @@ class DATA_SYSTEM(HBSYSTEM):
aprs_loc_packet = str(get_alias(int_id(_rf_src), subscriber_ids)) + '-' + ssid + '>APHBL3,TCPIP*:/' + str(datetime.datetime.utcnow().strftime("%H%M%Sh")) + str(aprs_lat) + icon_table + str(aprs_lon) + icon_icon + '/' + str(comment)
logger.info(aprs_loc_packet)
# Attempt to prevent malformed packets from being uploaded.
#try:
try:
aprslib.parse(aprs_loc_packet)
float(lat_deg) < 91
float(lon_deg) < 121
aprs_send(aprs_loc_packet)
logger.info('Sent APRS packet')
#except:
except:
logger.info('Error. Failed to send packet. Packet may be malformed.')
udt_block = 1
hdr_type = ''
# else:
# pass
else:
pass
#NMEA type packets for Anytone like radios.
elif _call_type == call_type or (_call_type == 'vcsbk' and pckt_seq > 3): #int.from_bytes(_seq, 'big') > 3 ):
global packet_assembly
global packet_assembly, btf
if _dtype_vseq == 6 or _dtype_vseq == 'group':
global btf, hdr_start
hdr_start = str(header_ID(_data))