136 lines
3.2 KiB
C
136 lines
3.2 KiB
C
/*
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* Copyright (c) 2023 Trackunit Corporation
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include <zephyr/drivers/gnss/gnss_publish.h>
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#include <zephyr/kernel.h>
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#include <zephyr/modem/chat.h>
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#include <string.h>
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#include "gnss_parse.h"
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#include "gnss_nmea0183.h"
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#include "gnss_nmea0183_match.h"
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static int gnss_nmea0183_match_parse_utc(char **argv, uint16_t argc, uint32_t *utc)
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{
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int64_t i64;
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if ((gnss_parse_dec_to_milli(argv[1], &i64) < 0) ||
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(i64 < 0) ||
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(i64 > UINT32_MAX)) {
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return -EINVAL;
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}
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*utc = (uint32_t)i64;
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return 0;
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}
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#if CONFIG_GNSS_SATELLITES
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static void gnss_nmea0183_match_reset_gsv(struct gnss_nmea0183_match_data *data)
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{
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data->satellites_length = 0;
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data->gsv_message_number = 1;
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}
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#endif
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static void gnss_nmea0183_match_publish(struct gnss_nmea0183_match_data *data)
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{
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if ((data->gga_utc == 0) || (data->rmc_utc == 0)) {
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return;
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}
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if (data->gga_utc == data->rmc_utc) {
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gnss_publish_data(data->gnss, &data->data);
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}
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}
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void gnss_nmea0183_match_gga_callback(struct modem_chat *chat, char **argv, uint16_t argc,
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void *user_data)
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{
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struct gnss_nmea0183_match_data *data = user_data;
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if (gnss_nmea0183_parse_gga((const char **)argv, argc, &data->data) < 0) {
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return;
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}
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if (gnss_nmea0183_match_parse_utc(argv, argc, &data->gga_utc) < 0) {
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return;
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}
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gnss_nmea0183_match_publish(data);
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}
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void gnss_nmea0183_match_rmc_callback(struct modem_chat *chat, char **argv, uint16_t argc,
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void *user_data)
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{
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struct gnss_nmea0183_match_data *data = user_data;
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if (gnss_nmea0183_parse_rmc((const char **)argv, argc, &data->data) < 0) {
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return;
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}
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if (gnss_nmea0183_match_parse_utc(argv, argc, &data->rmc_utc) < 0) {
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return;
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}
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gnss_nmea0183_match_publish(data);
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}
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#if CONFIG_GNSS_SATELLITES
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void gnss_nmea0183_match_gsv_callback(struct modem_chat *chat, char **argv, uint16_t argc,
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void *user_data)
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{
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struct gnss_nmea0183_match_data *data = user_data;
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struct gnss_nmea0183_gsv_header header;
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int ret;
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if (gnss_nmea0183_parse_gsv_header((const char **)argv, argc, &header) < 0) {
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return;
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}
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if (header.number_of_svs == 0) {
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return;
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}
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if (header.message_number != data->gsv_message_number) {
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gnss_nmea0183_match_reset_gsv(data);
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return;
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}
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data->gsv_message_number++;
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ret = gnss_nmea0183_parse_gsv_svs((const char **)argv, argc,
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&data->satellites[data->satellites_length],
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data->satellites_size - data->satellites_length);
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if (ret < 0) {
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gnss_nmea0183_match_reset_gsv(data);
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return;
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}
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data->satellites_length += (uint16_t)ret;
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if (data->satellites_length == header.number_of_svs) {
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gnss_publish_satellites(data->gnss, data->satellites, data->satellites_length);
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gnss_nmea0183_match_reset_gsv(data);
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}
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}
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#endif
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int gnss_nmea0183_match_init(struct gnss_nmea0183_match_data *data,
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const struct gnss_nmea0183_match_config *config)
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{
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__ASSERT(data != NULL, "data argument must be provided");
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__ASSERT(config != NULL, "config argument must be provided");
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memset(data, 0, sizeof(struct gnss_nmea0183_match_data));
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data->gnss = config->gnss;
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#if CONFIG_GNSS_SATELLITES
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data->satellites = config->satellites;
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data->satellites_size = config->satellites_size;
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#endif
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return 0;
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}
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