gnss20.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,
** DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT
** OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
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#ifndef GNSS20_H
#define GNSS20_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_i2c_master.h"
#include "drv_spi_master.h"
#include "drv_uart.h"
#include "spi_specifics.h"




#define GNSS20_RSP_START                            "$"
#define GNSS20_RSP_DELIMITER                        ","
#define GNSS20_RSP_END                              "\r\n"
#define GNSS20_RSP_GGA                              "GGA"

#define GNSS20_DUMMY                                0xFF

#define GNSS20_GGA_ELEMENT_SIZE                     15
#define GNSS20_GGA_TIME                             1
#define GNSS20_GGA_LATITUDE                         2
#define GNSS20_GGA_LATITUDE_SIDE                    3
#define GNSS20_GGA_LONGITUDE                        4
#define GNSS20_GGA_LONGITUDE_SIDE                   5
#define GNSS20_GGA_QUALITY_INDICATOR                6
#define GNSS20_GGA_NUMBER_OF_SATELLITES             7
#define GNSS20_GGA_H_DILUTION_OF_POS                8
#define GNSS20_GGA_ALTITUDE                         9
#define GNSS20_GGA_ALTITUDE_UNIT                    10
#define GNSS20_GGA_GEOIDAL_SEPARATION               11
#define GNSS20_GGA_GEOIDAL_SEPARATION_UNIT          12
#define GNSS20_GGA_TIME_SINCE_LAST_DGPS             13
#define GNSS20_GGA_DGPS_REFERENCE_STATION_ID        14

#define GNSS20_I2C_SLAVE_CR_CMD                     0xAA51
#define GNSS20_I2C_SLAVE_CW_CMD                     0xAA53
#define GNSS20_I2C_SLAVE_CMD_LEN                    8
#define GNSS20_I2C_SLAVE_RX_LEN                     4
#define GNSS20_I2C_SLAVE_TX_LEN_REG_OFFSET          0x0008
#define GNSS20_I2C_SLAVE_TX_BUF_REG_OFFSET          0x2000
#define GNSS20_I2C_SLAVE_RX_LEN_REG_OFFSET          0x0004
#define GNSS20_I2C_SLAVE_RX_BUF_REG_OFFSET          0x1000
#define GNSS20_I2C_SLAVE_ADDRESS_CR_OR_CW           0x50
#define GNSS20_I2C_SLAVE_ADDRESS_R                  0x54
#define GNSS20_I2C_SLAVE_ADDRESS_W                  0x58
#define GNSS20_I2C_SLAVE_MAX_ERRORS                 10

#define GNSS20_SPI_SLAVE_CFG_RD_CMD                 0x0A
#define GNSS20_SPI_SLAVE_RD_CMD                     0x81
#define GNSS20_SPI_SLAVE_CFG_WR_CMD                 0x0C
#define GNSS20_SPI_SLAVE_WR_CMD                     0x0E
#define GNSS20_SPI_SLAVE_RS_CMD                     0x06
#define GNSS20_SPI_SLAVE_WS_CMD                     0x08
#define GNSS20_SPI_SLAVE_PWON_CMD                   0x04
#define GNSS20_SPI_SLAVE_PWOFF_CMD                  0x02
#define GNSS20_SPI_SLAVE_CMD_LEN                    9
#define GNSS20_SPI_SLAVE_RX_LEN                     4
#define GNSS20_SPI_SLAVE_TX_LEN_REG_OFFSET          0x00000008ul
#define GNSS20_SPI_SLAVE_TX_BUF_REG_OFFSET          0x00002000ul
#define GNSS20_SPI_SLAVE_RX_LEN_REG_OFFSET          0x00000004ul
#define GNSS20_SPI_SLAVE_RX_BUF_REG_OFFSET          0x00001000ul

#define GNSS20_TX_DRV_BUFFER_SIZE                   100
#define GNSS20_RX_DRV_BUFFER_SIZE                   800

#define GNSS20_SET_DATA_SAMPLE_EDGE                 SET_SPI_DATA_SAMPLE_EDGE
#define GNSS20_SET_DATA_SAMPLE_MIDDLE               SET_SPI_DATA_SAMPLE_MIDDLE
 // gnss20_set



#define GNSS20_MAP_MIKROBUS( cfg, mikrobus ) \
    cfg.scl  = MIKROBUS( mikrobus, MIKROBUS_SCL ); \
    cfg.sda  = MIKROBUS( mikrobus, MIKROBUS_SDA ); \
    cfg.tx_pin = MIKROBUS( mikrobus, MIKROBUS_TX ); \
    cfg.rx_pin = MIKROBUS( mikrobus, MIKROBUS_RX ); \
    cfg.miso = MIKROBUS( mikrobus, MIKROBUS_MISO ); \
    cfg.mosi = MIKROBUS( mikrobus, MIKROBUS_MOSI ); \
    cfg.sck  = MIKROBUS( mikrobus, MIKROBUS_SCK ); \
    cfg.cs   = MIKROBUS( mikrobus, MIKROBUS_CS ); \
    cfg.rst  = MIKROBUS( mikrobus, MIKROBUS_RST ); \
    cfg.pps  = MIKROBUS( mikrobus, MIKROBUS_INT )
 // gnss20_map // gnss20

typedef enum
{
    GNSS20_DRV_SEL_UART,            
    GNSS20_DRV_SEL_SPI,             
    GNSS20_DRV_SEL_I2C              
 
} gnss20_drv_t;

struct gnss20_s;
typedef err_t ( *gnss20_master_io_t )( struct gnss20_s*, uint8_t*, uint16_t ); 

typedef struct gnss20_s
{
    digital_out_t rst;              
 
    digital_in_t pps;               
 
    uart_t uart;                    
    i2c_master_t i2c;               
    spi_master_t spi;               
 
    uint8_t uart_rx_buffer[ GNSS20_RX_DRV_BUFFER_SIZE ];  
    uint8_t uart_tx_buffer[ GNSS20_TX_DRV_BUFFER_SIZE ];  
 
    uint8_t slave_address;          
    pin_name_t chip_select;         
    gnss20_drv_t drv_sel;           
 
    gnss20_master_io_t write_f;     
    gnss20_master_io_t read_f;      
 
} gnss20_t;

typedef struct
{
    pin_name_t scl;                 
    pin_name_t sda;                 
    pin_name_t miso;                
    pin_name_t mosi;                
    pin_name_t sck;                 
    pin_name_t cs;                  
    pin_name_t rx_pin;              
    pin_name_t tx_pin;              
    pin_name_t rst;                 
    pin_name_t pps;                 
 
    uint32_t   i2c_speed;           
    uint8_t    i2c_address;         
 
    uint32_t         baud_rate;     
    bool             uart_blocking; 
    uart_data_bits_t data_bit;      
    uart_parity_t    parity_bit;    
    uart_stop_bits_t stop_bit;      
 
    uint32_t                          spi_speed;    
    spi_master_mode_t                 spi_mode;     
    spi_master_chip_select_polarity_t cs_polarity;  
 
    gnss20_drv_t drv_sel;           
 
} gnss20_cfg_t;

typedef enum
{
    GNSS20_OK = 0,
    GNSS20_ERROR = -1
 
} gnss20_return_value_t;


void gnss20_cfg_setup ( gnss20_cfg_t *cfg );

void gnss20_drv_interface_sel ( gnss20_cfg_t *cfg, gnss20_drv_t drv_sel );

err_t gnss20_init ( gnss20_t *ctx, gnss20_cfg_t *cfg );

err_t gnss20_generic_write ( gnss20_t *ctx, uint8_t *data_in, uint16_t len );

err_t gnss20_generic_read ( gnss20_t *ctx, uint8_t *data_out, uint16_t len );

uint8_t gnss20_get_pps_pin ( gnss20_t *ctx );

void gnss20_set_rst_pin ( gnss20_t *ctx, uint8_t state );

void gnss20_reset_device ( gnss20_t *ctx );

err_t gnss20_parse_gga ( uint8_t *rsp_buf, uint8_t gga_element, uint8_t *element_data );
 
#ifdef __cplusplus
}
#endif
#endif // GNSS20_H
 // gnss20
 
// ------------------------------------------------------------------------ END