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| author | Gary E. Miller <gem@rellim.com> | 2010-12-28 00:03:30 -0800 |
|---|---|---|
| committer | Gary E. Miller <gem@rellim.com> | 2010-12-28 00:03:30 -0800 |
| commit | 80d2814cf4964c7533b49e3cba180c5358d51427 (patch) | |
| tree | 2820cb94162ad87ce40e9667369cbfe606197a1d | |
| parent | 257fe799585bd445e07cca084a169a428422645a (diff) | |
| download | gpsd-80d2814cf4964c7533b49e3cba180c5358d51427.tar.gz | |
Scale and commment IODE and AODO in subframe data.
| -rw-r--r-- | subframe.c | 21 |
1 files changed, 16 insertions, 5 deletions
@@ -156,7 +156,14 @@ struct subframe { int32_t tgd, af0, af1, af2; } sub1; struct { - uint32_t IODE, e, sqrtA, toe, fit, AODO; + /* Issue of Data (Ephemeris), + * equal to the 8 LSBs of the 10 bit IODC of the same data set */ + uint8_t IODE; + /* Age of Data Offset for the NMCT, 6 bits, ignore if all ones */ + uint8_t AODO; + /* Age of Data Offset for the NMCT, seconds */ + uint16_t u_AODO; + uint32_t e, sqrtA, toe, fit; int32_t Crs, Cus, Cuc, deltan, M0; /* eccentricity, 32 bits, unsigned, dimensionless */ double d_eccentricity; @@ -299,9 +306,10 @@ void gpsd_interpret_subframe(struct gps_device_t *session, subp->sub2.toe = ((words[9] >> 8) & 0x00FFFF); subp->sub2.fit = ((words[9] >> 7) & 0x000001); subp->sub2.AODO = ((words[9] >> 2) & 0x00001F); + subp->sub2.u_AODO = subp->sub2.AODO * 900; gpsd_report(LOG_PROG, - "50B: SF:2 SV:%2u IODE:%u Crs:%d deltan:%d M0:%d " - "Cuc:%d e:%f Cus:%d sqrtA:%.11g toe:%u FIT:%u AODO:%u\n", + "50B: SF:2 SV:%2u IODE:%3u Crs:%d deltan:%d M0:%d " + "Cuc:%d e:%f Cus:%d sqrtA:%.11g toe:%u FIT:%u AODO:%5u\n", svid, subp->sub2.IODE, subp->sub2.Crs, @@ -313,13 +321,16 @@ void gpsd_interpret_subframe(struct gps_device_t *session, subp->sub2.d_sqrtA, subp->sub2.toe, subp->sub2.fit, - subp->sub2.AODO); + subp->sub2.u_AODO); } break; case 3: /* subframe 3: ephemeris for transmitting SV */ { - uint32_t IODE, IDOT; + /* Issue of Data (Ephemeris), 8 bits, unsigned + * equal to the 8 LSBs of the 10 bit IODC of the same data set */ + uint8_t IODE; + uint32_t IDOT; int32_t Cic, Cis, Crc, om0, i0, om, Omegad; /* Omega dot, Rate of Right Ascension, 24 bits signed, * semi-circles/sec */ |