[gpsd-users] Fwd: GPSD sending extra buggy string with wrong mode update

Dear all,

I am facing an issue where GPSD starts sending an extra json string after running continuously for 24hours. I observe this on CGPS

My gpsmon output is perfect. I have add the usual set of strings and buggy set as below:

CGPS Output with buggy string:

n/a [15;23H-0.013 [16;45H [2;79H

[18d [2M [37d{"class":"TPV","device":"/dev/ttymxc1","mode":2,"time":"2017-03-28T08:29:13.400Z","ept":0.005,"lat":12.945159167,"lon":77.586076833,"track":0.000 [38;1H0,"speed":0.028}

[5;18H3110.2 ft [9;18H3

+/- 19 ft [15;23H0.017 [16;45H [2;79H

[18d [2M [37d{"class":"TPV","device":"/dev/ttymxc1","mode":3,"time":"2017-03-28T08:29:13.400Z","ept":0.005,"lat":12.945159167,"lon":77.586076833,"alt":948.000 [38;1H,"epv":5.923,"track":0.0000,"speed":0.028}

[8;18H0.0 ft/min [15;26H61 [16;45H [2;79H

[2;38H6 [3;27H8 [5;18Hn/a [8;18Hn/a [9;18H2

n/a [15;23H-0.026 [16;45H [2;79H

[18d [2M [37d{"class":"TPV","device":"/dev/ttymxc1","mode":2,"time":"2017-03-28T08:29:13.600Z","ept":0.005,"lat":12.945158667,"lon":77.586076667,"track":0.000 [38;1H0,"speed":0.026}

[5;18H3110.6 ft [9;18H3

+/- 19 ft [15;23H0.004 [16;45H [2;79H

[18d [2M [37d{"class":"TPV","device":"/dev/ttymxc1","mode":3,"time":"2017-03-28T08:29:13.600Z","ept":0.005,"lat":12.945158667,"lon":77.586076667,"alt":948.100 [38;1H,"epv":5.923,"track":0.0000,"speed":0.026}

[8;18H0.0 ft/min [15;26H48 [16;45H [2;79H

[2;38H8 [5;18Hn/a [8;18Hn/a [9;18H2

CGPS Output with correct string:

[23G7 [8;18Hn/a [15;26H2 [16;45H [2;79H

[34d{"class":"TPV","device":"/dev/ttymxc1","mode":3,"time":"2017-03-28T08:09:54.400Z","ept":0.005,"lat":12.945289667,"lon":77.586026833,"alt":926.500 [35;1H,"epv":44.850,"track":0.0000,"speed":0.173}

[8;18H0.0 ft/min [15;26H6 [16;45H [2;79H

[36d{"class":"TPV","device":"/dev/ttymxc1","mode":3,"time":"2017-03-28T08:09:54.400Z","ept":0.005,"lat":12.945289667,"lon":77.586026833,"alt":926.500 [37;1H,"epv":44.850,"track":0.0000,"speed":0.173,"climb":0.000}

[2;38H6 [5;23H4

n/a [15;26H28 [16;45H [2;79H

[18d [M [37d{"class":"TPV","device":"/dev/ttymxc1","mode":3,"time":"2017-03-28T08:09:54.600Z","ept":0.005,"lat":12.945289667,"lon":77.586026500,"alt":926.400 [38;1H,"epv":44.850,"track":0.0000,"speed":0.148}

[8;18H0.0 ft/min [15;26H6 [16;45H [2;79H

[18d [2M [37d{"class":"TPV","device":"/dev/ttymxc1","mode":3,"time":"2017-03-28T08:09:54.600Z","ept":0.005,"lat":12.945289667,"lon":77.586026500,"alt":926.400 [38;1H,"epv":44.850,"track":0.0000,"speed":0.148,"climb":0.000}

[2;38H8 [3;27H8 [6;20H5

Gpsmon output:

$GNRMC,085607.60,A,1256.71171,N,07735.16345,E,0.084,,280317,,,D*60

$GNVTG,,T,,M,0.084,N,0.155,K,D*35

$GNGGA,085607.60,1256.71171,N,07735.16345,E,2,12,0.70,933.8,M,-86.4,M,,0000*6B

$GNGSA,A,3,40,30,08,01,03,41,11,23,27,28,09,07,1.20,0.70,0.98*11

$GNGSA,A,3,68,69,81,67,79,78,,,,,,,1.20,0.70,0.98*11

$GNGLL,1256.71171,N,07735.16345,E,085607.60,A,D*7A

$GNRMC,085607.80,A,1256.71171,N,07735.16346,E,0.009,,280317,,,D*68

$GNVTG,,T,,M,0.009,N,0.017,K,D*37

$GNGGA,085607.80,1256.71171,N,07735.16346,E,2,12,0.70,933.8,M,-86.4,M,,0000*66

$GNGSA,A,3,40,30,08,01,03,41,11,23,27,28,09,07,1.20,0.70,0.98*11

$GNGSA,A,3,68,69,81,67,79,78,,,,,,,1.20,0.70,0.98*11

$GNGLL,1256.71171,N,07735.16346,E,085607.80,A,D*77

Why am I getting this extra string only after long run? My GPS update rate is 200ms

Regards,

From:	GSA
Subject:	[gpsd-users] Fwd: GPSD sending extra buggy string with wrong mode update(mode = 2D) causing 2D-3D fluctuation
Date:	Tue, 28 Mar 2017 14:45:33 +0530