gps.h

 
#ifndef _GPS_H
#define _GPS_H
 
#define GPS_PUBX_SILENCE                                                       \
  "$PUBX,40,GLL,0,0,0,0,0,0*5C\r\n$PUBX,40,RMC,0,0,0,0,0,0*47\r\n$PUBX,40,"    \
  "GSA,0,0,0,0,0,0*4E\r\n$PUBX,40,GSV,0,0,0,0,0,0*59\r\n$PUBX,40,GGA,0,0,0,0," \
  "0,0*5A\r\n$PUBX,40,VTG,0,0,0,0,0,0*5E\r\n$PUBX,40,GSV,0,0,0,0,0,0*59\r\n"
    
#define GPS_PUBX_POLL "$PUBX,00*33\r\n"
 
#include "stm32f4xx.h"
#include "stdint.h"
#include "math.h"
 
#include "devices.h"
#include "uart.h"

 
 
typedef struct GPS_Data {
 //PUBX 00 message
 char time[15];
 uint8_t hour;
 uint8_t minute;
 uint8_t second;
 char latitude[15];
 char latitude_degrees;
 float latitude_minutes;
 char N_S[15];
 char longitude[15];
 char longitude_degrees;
 float longitude_minutes;
 char E_W[15];
 char altref[15]; // Altitude above sea level
 char navstat[3]; // Navigation status (NF = No Fix, DR = Dead Reckoning, G2 = 2D Fix, G3 = 3D Fix,D2 = 2D Differential, D3 = 3D Differential, RK = combined GPS + dead reckoning solution, TT = Time only solution)
 char hacc[15]; // Horizontal accuracy estimate
 char vacc[15]; // Vertical accuracy estimate
 char sog[15]; // Speed over ground
 char cog[15]; // Course over ground
 char vvel[15]; // Vertical velocity
 char diffage[15]; // Age of DGPS data
 char hdop[15]; // Horizontal dilution of precision
 char vdop[15]; // Vertical dilution of precision
 char tdop[15]; // Time dilution of precision
 char satellites[15]; // Number of satellites used
 uint8_t lock; // 0 = no lock, 1 = lock
} GPS_Data;
 
typedef struct GPS {
    UART base;
    GPIO_TypeDef *port;
    UART_Pins pins;
    uint32_t baud;
    void (*message)(struct GPS *, char *);
    void (*decode)(struct GPS *, char *, struct GPS_Data *);
} GPS;
 
DeviceHandle_t GPS_init(GPS *, char *, USART_TypeDef *, GPIO_TypeDef *, UART_Pins, uint32_t);
 
void GPS_message(GPS *, char *);
void GPS_decode(GPS *, char *, struct GPS_Data *);

#endif