diff options
Diffstat (limited to 'apps/gps/nmealib/parse.c')
| -rw-r--r-- | apps/gps/nmealib/parse.c | 501 |
1 files changed, 0 insertions, 501 deletions
diff --git a/apps/gps/nmealib/parse.c b/apps/gps/nmealib/parse.c deleted file mode 100644 index 99bdf075b..000000000 --- a/apps/gps/nmealib/parse.c +++ /dev/null @@ -1,501 +0,0 @@ -/* - * - * NMEA library - * URL: http://nmea.sourceforge.net - * Author: Tim (xtimor@gmail.com) - * Licence: http://www.gnu.org/licenses/lgpl.html - * $Id: parse.c 17 2008-03-11 11:56:11Z xtimor $ - * - */ - -/** - * \file parse.h - * \brief Functions of a low level for analysis of - * packages of NMEA stream. - * - * \code - * ... - * ptype = nmea_pack_type( - * (const char *)parser->buffer + nparsed + 1, - * parser->buff_use - nparsed - 1); - * - * if(0 == (node = malloc(sizeof(nmeaParserNODE)))) - * goto mem_fail; - * - * node->pack = 0; - * - * switch(ptype) - * { - * case GPGGA: - * if(0 == (node->pack = malloc(sizeof(nmeaGPGGA)))) - * goto mem_fail; - * node->packType = GPGGA; - * if(!nmea_parse_GPGGA( - * (const char *)parser->buffer + nparsed, - * sen_sz, (nmeaGPGGA *)node->pack)) - * { - * free(node); - * node = 0; - * } - * break; - * case GPGSA: - * if(0 == (node->pack = malloc(sizeof(nmeaGPGSA)))) - * goto mem_fail; - * node->packType = GPGSA; - * if(!nmea_parse_GPGSA( - * (const char *)parser->buffer + nparsed, - * sen_sz, (nmeaGPGSA *)node->pack)) - * { - * free(node); - * node = 0; - * } - * break; - * ... - * \endcode - */ -#include "nmea/tok.h" -#include "nmea/parse.h" -#include "nmea/context.h" -#include "nmea/gmath.h" -#include "nmea/units.h" - -#include <string.h> -#include <stdio.h> - -int _nmea_parse_time(const char *buff, int buff_sz, nmeaTIME *res) -{ - int success = 0; - - switch(buff_sz) - { - case sizeof("hhmmss") - 1: - success = (3 == nmea_scanf(buff, buff_sz, - "%2d%2d%2d", &(res->hour), &(res->min), &(res->sec) - )); - break; - case sizeof("hhmmss.s") - 1: - case sizeof("hhmmss.ss") - 1: - case sizeof("hhmmss.sss") - 1: - success = (4 == nmea_scanf(buff, buff_sz, - "%2d%2d%2d.%d", &(res->hour), &(res->min), &(res->sec), &(res->hsec) - )); - break; - default: - nmea_error("Parse of time error (format error)!"); - success = 0; - break; - } - - return (success?0:-1); -} - -/** - * \brief Define packet type by header (nmeaPACKTYPE). - * @param buff a constant character pointer of packet buffer. - * @param buff_sz buffer size. - * @return The defined packet type - * @see nmeaPACKTYPE - */ -int nmea_pack_type(const char *buff, int buff_sz) -{ - static const char *pheads[] = { - "GPGGA", - "GPGSA", - "GPGSV", - "GPRMC", - "GPVTG", - }; - - //NMEA_ASSERT(buff); - - if(buff_sz < 5) - return GPNON; - else if(0 == memcmp(buff, pheads[0], 5)) - return GPGGA; - else if(0 == memcmp(buff, pheads[1], 5)) - return GPGSA; - else if(0 == memcmp(buff, pheads[2], 5)) - return GPGSV; - else if(0 == memcmp(buff, pheads[3], 5)) - return GPRMC; - else if(0 == memcmp(buff, pheads[4], 5)) - return GPVTG; - - return GPNON; -} - -/** - * \brief Find tail of packet ("\r\n") in buffer and check control sum (CRC). - * @param buff a constant character pointer of packets buffer. - * @param buff_sz buffer size. - * @param res_crc a integer pointer for return CRC of packet (must be defined). - * @return Number of bytes to packet tail. - */ -int nmea_find_tail(const char *buff, int buff_sz, int *res_crc) -{ - static const int tail_sz = 3 /* *[CRC] */ + 2 /* \r\n */; - - const char *end_buff = buff + buff_sz; - int nread = 0; - int crc = 0; - - //NMEA_ASSERT(buff && res_crc); - - *res_crc = -1; - - for(;buff < end_buff; ++buff, ++nread) - { - if(('$' == *buff) && nread) - { - buff = 0; - break; - } - else if('*' == *buff) - { - if(buff + tail_sz <= end_buff && '\r' == buff[3] && '\n' == buff[4]) - { - *res_crc = nmea_atoi(buff + 1, 2, 16); - nread = buff_sz - (int)(end_buff - (buff + tail_sz)); - if(*res_crc != crc) - { - *res_crc = -1; - buff = 0; - } - } - - break; - } - else if(nread) - crc ^= (int)*buff; - } - - if(*res_crc < 0 && buff) - nread = 0; - - return nread; -} - -/** - * \brief Parse GGA packet from buffer. - * @param buff a constant character pointer of packet buffer. - * @param buff_sz buffer size. - * @param pack a pointer of packet which will filled by function. - * @return 1 (true) - if parsed successfully or 0 (false) - if fail. - */ -int nmea_parse_GPGGA(const char *buff, int buff_sz, nmeaGPGGA *pack) -{ - char time_buff[NMEA_TIMEPARSE_BUF]; - - //NMEA_ASSERT(buff && pack); - - memset(pack, 0, sizeof(nmeaGPGGA)); - - nmea_trace_buff(buff, buff_sz); - - if(14 != nmea_scanf(buff, buff_sz, - "$GPGGA,%s,%f,%C,%f,%C,%d,%d,%f,%f,%C,%f,%C,%f,%d*", - &(time_buff[0]), - &(pack->lat), &(pack->ns), &(pack->lon), &(pack->ew), - &(pack->sig), &(pack->satinuse), &(pack->HDOP), &(pack->elv), &(pack->elv_units), - &(pack->diff), &(pack->diff_units), &(pack->dgps_age), &(pack->dgps_sid))) - { - nmea_error("GPGGA parse error!"); - return 0; - } - - if(0 != _nmea_parse_time(&time_buff[0], (int)strlen(&time_buff[0]), &(pack->utc))) - { - nmea_error("GPGGA time parse error!"); - return 0; - } - - return 1; -} - -/** - * \brief Parse GSA packet from buffer. - * @param buff a constant character pointer of packet buffer. - * @param buff_sz buffer size. - * @param pack a pointer of packet which will filled by function. - * @return 1 (true) - if parsed successfully or 0 (false) - if fail. - */ -int nmea_parse_GPGSA(const char *buff, int buff_sz, nmeaGPGSA *pack) -{ - //NMEA_ASSERT(buff && pack); - - memset(pack, 0, sizeof(nmeaGPGSA)); - - nmea_trace_buff(buff, buff_sz); - - if(17 != nmea_scanf(buff, buff_sz, - "$GPGSA,%C,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%f,%f,%f*", - &(pack->fix_mode), &(pack->fix_type), - &(pack->sat_prn[0]), &(pack->sat_prn[1]), &(pack->sat_prn[2]), &(pack->sat_prn[3]), &(pack->sat_prn[4]), &(pack->sat_prn[5]), - &(pack->sat_prn[6]), &(pack->sat_prn[7]), &(pack->sat_prn[8]), &(pack->sat_prn[9]), &(pack->sat_prn[10]), &(pack->sat_prn[11]), - &(pack->PDOP), &(pack->HDOP), &(pack->VDOP))) - { - nmea_error("GPGSA parse error!"); - return 0; - } - - return 1; -} - -/** - * \brief Parse GSV packet from buffer. - * @param buff a constant character pointer of packet buffer. - * @param buff_sz buffer size. - * @param pack a pointer of packet which will filled by function. - * @return 1 (true) - if parsed successfully or 0 (false) - if fail. - */ -int nmea_parse_GPGSV(const char *buff, int buff_sz, nmeaGPGSV *pack) -{ - int nsen, nsat; - - //NMEA_ASSERT(buff && pack); - - memset(pack, 0, sizeof(nmeaGPGSV)); - - nmea_trace_buff(buff, buff_sz); - - nsen = nmea_scanf(buff, buff_sz, - "$GPGSV,%d,%d,%d," - "%d,%d,%d,%d," - "%d,%d,%d,%d," - "%d,%d,%d,%d," - "%d,%d,%d,%d*", - &(pack->pack_count), &(pack->pack_index), &(pack->sat_count), - &(pack->sat_data[0].id), &(pack->sat_data[0].elv), &(pack->sat_data[0].azimuth), &(pack->sat_data[0].sig), - &(pack->sat_data[1].id), &(pack->sat_data[1].elv), &(pack->sat_data[1].azimuth), &(pack->sat_data[1].sig), - &(pack->sat_data[2].id), &(pack->sat_data[2].elv), &(pack->sat_data[2].azimuth), &(pack->sat_data[2].sig), - &(pack->sat_data[3].id), &(pack->sat_data[3].elv), &(pack->sat_data[3].azimuth), &(pack->sat_data[3].sig)); - - nsat = (pack->pack_index - 1) * NMEA_SATINPACK; - nsat = (nsat + NMEA_SATINPACK > pack->sat_count)?pack->sat_count - nsat:NMEA_SATINPACK; - nsat = nsat * 4 + 3 /* first three sentence`s */; - - if(nsen < nsat || nsen > (NMEA_SATINPACK * 4 + 3)) - { - nmea_error("GPGSV parse error!"); - return 0; - } - - return 1; -} - -/** - * \brief Parse RMC packet from buffer. - * @param buff a constant character pointer of packet buffer. - * @param buff_sz buffer size. - * @param pack a pointer of packet which will filled by function. - * @return 1 (true) - if parsed successfully or 0 (false) - if fail. - */ -int nmea_parse_GPRMC(const char *buff, int buff_sz, nmeaGPRMC *pack) -{ - int nsen; - char time_buff[NMEA_TIMEPARSE_BUF]; - - //NMEA_ASSERT(buff && pack); - - memset(pack, 0, sizeof(nmeaGPRMC)); - - nmea_trace_buff(buff, buff_sz); - - nsen = nmea_scanf(buff, buff_sz, - "$GPRMC,%s,%C,%f,%C,%f,%C,%f,%f,%2d%2d%2d,%f,%C,%C*", - &(time_buff[0]), - &(pack->status), &(pack->lat), &(pack->ns), &(pack->lon), &(pack->ew), - &(pack->speed), &(pack->direction), - &(pack->utc.day), &(pack->utc.mon), &(pack->utc.year), - &(pack->declination), &(pack->declin_ew), &(pack->mode)); - - if(nsen != 13 && nsen != 14) - { - nmea_error("GPRMC parse error!"); - return 0; - } - - if(0 != _nmea_parse_time(&time_buff[0], (int)strlen(&time_buff[0]), &(pack->utc))) - { - nmea_error("GPRMC time parse error!"); - return 0; - } - - if(pack->utc.year < 90) - pack->utc.year += 100; - pack->utc.mon -= 1; - - return 1; -} - -/** - * \brief Parse VTG packet from buffer. - * @param buff a constant character pointer of packet buffer. - * @param buff_sz buffer size. - * @param pack a pointer of packet which will filled by function. - * @return 1 (true) - if parsed successfully or 0 (false) - if fail. - */ -int nmea_parse_GPVTG(const char *buff, int buff_sz, nmeaGPVTG *pack) -{ - //NMEA_ASSERT(buff && pack); - - memset(pack, 0, sizeof(nmeaGPVTG)); - - nmea_trace_buff(buff, buff_sz); - - if(8 != nmea_scanf(buff, buff_sz, - "$GPVTG,%f,%C,%f,%C,%f,%C,%f,%C*", - &(pack->dir), &(pack->dir_t), - &(pack->dec), &(pack->dec_m), - &(pack->spn), &(pack->spn_n), - &(pack->spk), &(pack->spk_k))) - { - nmea_error("GPVTG parse error!"); - return 0; - } - - if( pack->dir_t != 'T' || - pack->dec_m != 'M' || - pack->spn_n != 'N' || - pack->spk_k != 'K') - { - nmea_error("GPVTG parse error (format error)!"); - return 0; - } - - return 1; -} - -/** - * \brief Fill nmeaINFO structure by GGA packet data. - * @param pack a pointer of packet structure. - * @param info a pointer of summary information structure. - */ -void nmea_GPGGA2info(nmeaGPGGA *pack, nmeaINFO *info) -{ - //NMEA_ASSERT(pack && info); - - info->utc.hour = pack->utc.hour; - info->utc.min = pack->utc.min; - info->utc.sec = pack->utc.sec; - info->utc.hsec = pack->utc.hsec; - info->sig = pack->sig; - info->HDOP = pack->HDOP; - info->elv = pack->elv; - info->lat = ((pack->ns == 'N')?pack->lat:-(pack->lat)); - info->lon = ((pack->ew == 'E')?pack->lon:-(pack->lon)); - info->smask |= GPGGA; -} - -/** - * \brief Fill nmeaINFO structure by GSA packet data. - * @param pack a pointer of packet structure. - * @param info a pointer of summary information structure. - */ -void nmea_GPGSA2info(nmeaGPGSA *pack, nmeaINFO *info) -{ - int i, j, nuse = 0; - - //NMEA_ASSERT(pack && info); - - info->fix = pack->fix_type; - info->PDOP = pack->PDOP; - info->HDOP = pack->HDOP; - info->VDOP = pack->VDOP; - - for(i = 0; i < NMEA_MAXSAT; ++i) - { - for(j = 0; j < info->satinfo.inview; ++j) - { - if(pack->sat_prn[i] && pack->sat_prn[i] == info->satinfo.sat[j].id) - { - info->satinfo.sat[j].in_use = 1; - nuse++; - } - } - } - - info->satinfo.inuse = nuse; - info->smask |= GPGSA; -} - -/** - * \brief Fill nmeaINFO structure by GSV packet data. - * @param pack a pointer of packet structure. - * @param info a pointer of summary information structure. - */ -void nmea_GPGSV2info(nmeaGPGSV *pack, nmeaINFO *info) -{ - int isat, isi, nsat; - - //NMEA_ASSERT(pack && info); - - if(pack->pack_index > pack->pack_count || - pack->pack_index * NMEA_SATINPACK > NMEA_MAXSAT) - return; - - if(pack->pack_index < 1) - pack->pack_index = 1; - - info->satinfo.inview = pack->sat_count; - - nsat = (pack->pack_index - 1) * NMEA_SATINPACK; - nsat = (nsat + NMEA_SATINPACK > pack->sat_count)?pack->sat_count - nsat:NMEA_SATINPACK; - - for(isat = 0; isat < nsat; ++isat) - { - isi = (pack->pack_index - 1) * NMEA_SATINPACK + isat; - info->satinfo.sat[isi].id = pack->sat_data[isat].id; - info->satinfo.sat[isi].elv = pack->sat_data[isat].elv; - info->satinfo.sat[isi].azimuth = pack->sat_data[isat].azimuth; - info->satinfo.sat[isi].sig = pack->sat_data[isat].sig; - } - - info->smask |= GPGSV; -} - -/** - * \brief Fill nmeaINFO structure by RMC packet data. - * @param pack a pointer of packet structure. - * @param info a pointer of summary information structure. - */ -void nmea_GPRMC2info(nmeaGPRMC *pack, nmeaINFO *info) -{ - //NMEA_ASSERT(pack && info); - - if('A' == pack->status) - { - if(NMEA_SIG_BAD == info->sig) - info->sig = NMEA_SIG_MID; - if(NMEA_FIX_BAD == info->fix) - info->fix = NMEA_FIX_2D; - } - else if('V' == pack->status) - { - info->sig = NMEA_SIG_BAD; - info->fix = NMEA_FIX_BAD; - } - - - info->utc = pack->utc; - info->lat = ((pack->ns == 'N')?pack->lat:-(pack->lat)); - info->lon = ((pack->ew == 'E')?pack->lon:-(pack->lon)); - info->speed = pack->speed * NMEA_TUD_KNOTS; - info->direction = pack->direction; - info->smask |= GPRMC; -} - -/** - * \brief Fill nmeaINFO structure by VTG packet data. - * @param pack a pointer of packet structure. - * @param info a pointer of summary information structure. - */ -void nmea_GPVTG2info(nmeaGPVTG *pack, nmeaINFO *info) -{ - //NMEA_ASSERT(pack && info); - - info->direction = pack->dir; - info->declination = pack->dec; - info->speed = pack->spk; - info->smask |= GPVTG; -} |