gps6.h

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/****************************************************************************
** Copyright (C) 2020 MikroElektronika d.o.o.
** Contact: https://www.mikroe.com/contact
**
** Permission is hereby granted, free of charge, to any person obtaining a copy
** of this software and associated documentation files (the "Software"), to deal
** in the Software without restriction, including without limitation the rights
** to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
** copies of the Software, and to permit persons to whom the Software is
** furnished to do so, subject to the following conditions:
** The above copyright notice and this permission notice shall be
** included in all copies or substantial portions of the Software.
**
** THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
** EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
** OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
** IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
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** OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
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#ifndef GPS6_H
#define GPS6_H
 
#ifdef __cplusplus
extern "C"{
#endif
 
#ifdef PREINIT_SUPPORTED
#include "preinit.h"
#endif
 
#ifdef MikroCCoreVersion
    #if MikroCCoreVersion >= 1
        #include "delays.h"
    #endif
#endif
 
#include "drv_digital_out.h"
#include "drv_digital_in.h"
#include "drv_uart.h"
 
#define GPS6_RSP_START                              "$"
#define GPS6_RSP_DELIMITER                          ","
#define GPS6_RSP_GPGGA                              "$GPGGA"
 
#define GPS6_GPGGA_ELEMENT_SIZE                     15
#define GPS6_GPGGA_TIME                             1
#define GPS6_GPGGA_LATITUDE                         2
#define GPS6_GPGGA_LATITUDE_SIDE                    3
#define GPS6_GPGGA_LONGITUDE                        4
#define GPS6_GPGGA_LONGITUDE_SIDE                   5
#define GPS6_GPGGA_QUALITY_INDICATOR                6
#define GPS6_GPGGA_NUMBER_OF_SATELLITES             7
#define GPS6_GPGGA_H_DILUTION_OF_POS                8
#define GPS6_GPGGA_ALTITUDE                         9
#define GPS6_GPGGA_ALTITUDE_UNIT                    10
#define GPS6_GPGGA_GEOIDAL_SEPARATION               11
#define GPS6_GPGGA_GEOIDAL_SEPARATION_UNIT          12
#define GPS6_GPGGA_TIME_SINCE_LAST_DGPS             13
#define GPS6_GPGGA_DGPS_REFERENCE_STATION_ID        14
 
#define DRV_TX_BUFFER_SIZE                          300
#define DRV_RX_BUFFER_SIZE                          100
 
 // gps6_cmd
 
#define GPS6_MAP_MIKROBUS( cfg, mikrobus ) \
    cfg.tx_pin  = MIKROBUS( mikrobus, MIKROBUS_TX ); \
    cfg.rx_pin  = MIKROBUS( mikrobus, MIKROBUS_RX ); \
    cfg.rst = MIKROBUS( mikrobus, MIKROBUS_RST );
 
 // gps6_map
 // gps6
 
typedef struct
{
    // Output pins
    digital_out_t rst;                          
    // Modules
    uart_t uart;                                
    // Buffers
    char uart_rx_buffer[ DRV_RX_BUFFER_SIZE ];  
    char uart_tx_buffer[ DRV_TX_BUFFER_SIZE ];  
} gps6_t;
 
typedef struct
{
    // Communication gpio pins
    pin_name_t rx_pin;                          
    pin_name_t tx_pin;                          
    // Additional gpio pins
    pin_name_t rst;                             
    // Static variable
    uint32_t          baud_rate;                
    bool              uart_blocking;            
    uart_data_bits_t  data_bit;                 
    uart_parity_t     parity_bit;               
    uart_stop_bits_t  stop_bit;                 
} gps6_cfg_t;
 
typedef enum
{
    GPS6_OK = 0,
    GPS6_ERROR = -1
 
} gps6_return_value_t;
 
void gps6_cfg_setup ( gps6_cfg_t *cfg );
 
err_t gps6_init ( gps6_t *ctx, gps6_cfg_t *cfg );
 
err_t gps6_generic_write ( gps6_t *ctx, char *data_buf, uint16_t len );
 
err_t gps6_generic_read ( gps6_t *ctx, char *data_buf, uint16_t max_len );
 
void gps6_enable_device ( gps6_t *ctx );
 
void gps6_disable_device ( gps6_t *ctx ); 
 
err_t gps6_parse_gpgga ( char *rsp_buf, uint8_t gpgga_element, char *element_data );
 
#ifdef __cplusplus
}
#endif
#endif // GPS6_H
 
 // gps6
 
// ------------------------------------------------------------------------ END