gps.h
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/*
Decode GPS data.
Copyright (C) 2019, ENSIMAG students
This project is under the MIT license
*/
#pragma once
#include <stdint.h>
#include <stdbool.h>
#if GPS == 1
// Return codes.
#define GPS_SUCCESS 0
#define GPS_FAIL 1
// Store the GPS parsed data in ASCII.
typedef struct {
char data_type[6];
char latitude[10];
char latitude_pole[2];
char longitude[11];
char longitude_pole[2];
char fix_quality[2];
char altitude[8];
} gps_nmea_t;
// Store GPS data.
typedef struct {
bool has_fix; // Ara data fixed?
double latitude;
double longitude;
int32_t latitude_bin;
int32_t longitude_bin;
int16_t altitude;
} gps_data_t;
// GPS parsed data.
extern gps_data_t gps_data;
/**
* @brief Get the lastest GPS position in binary format.
* @param lat Where to store the latitude.
* @param lon Where to store the longitude.
* @param alt Where to store the altitude (in m).
* @return Either `GPS_SUCCESS` or `GPS_FAIL`.
*/
uint8_t gps_get_binary(int32_t *lat, int32_t *lon, int16_t *alt);
/**
* @brief Parse GPS data.
* @param rxBuffer GPS data to parse.
* @param rxBufferSize Length of data.
* @return Either `GPS_SUCCESS` or `GPS_FAIL`.
*/
uint8_t gps_parse_data(int8_t *rxBuffer, int32_t rxBufferSize);
/**
* @brief Reset parsed GPS data.
*/
void gps_reset_data(void);
#endif