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mikroSDK Library

GNSS 8 Click

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Author: MIKROE

Last Updated: 2024-10-31

Package Version: 2.1.0.15

mikroSDK Library: 2.0.0.0

Category: GPS/GNSS

Downloaded: 312 times

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License: MIT license  

GNSS 8 Click is a compact add-on board that provides fast positioning capability. This board features the LC79DA, a high-performance dual-band and multi-constellation GNSS module from Quectel Wireless Solutions.

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mikroSDK Library Blog


GNSS 8 Click

GNSS 8 Click is a compact add-on board that provides fast positioning capability. This board features the LC79DA, a high-performance dual-band and multi-constellation GNSS module from Quectel Wireless Solutions.

gnss8_click.png

Click Product page


Click library

  • Author : Luka Filipovic
  • Date : Jun 2021.
  • Type : UART type

Software Support

We provide a library for the GNSS8 Click as well as a demo application (example), developed using MikroElektronika compilers. The demo can run on all the main MikroElektronika development boards.

Package can be downloaded/installed directly from NECTO Studio Package Manager(recommended way), downloaded from our LibStock™ or found on Mikroe github account.

Library Description

This library contains API for GNSS8 Click driver.

Standard key functions :

  • gnss8_cfg_setup Config Object Initialization function.

    void gnss8_cfg_setup ( gnss8_cfg_t *cfg );
  • gnss8_init Initialization function.

    err_t gnss8_init ( gnss8_t *ctx, gnss8_cfg_t *cfg );

Example key functions :

  • gnss8_generic_read Data reading function.

    err_t gnss8_generic_read ( gnss8_t *ctx, char *data_buf, uint16_t max_len );
  • gnss8_generic_write Data writing function.

    err_t gnss8_generic_write ( gnss8_t *ctx, char *data_buf, uint16_t len );
  • gnss8_set_ap_req Set AP request pin state.

    void gnss8_set_ap_req ( gnss8_t *ctx, uint8_t state );

Example Description

This example showcases device abillity to read data outputed from device and show it's coordinates and altitude when connected.

The demo application is composed of two sections :

Application Init

Initializes host communication modules, additioaln GPIO's used for control of device and resets device.


void application_init ( void ) 
{
    log_cfg_t log_cfg;  /**< Logger config object. */
    gnss8_cfg_t gnss8_cfg;  /**< Click config object. */

    /** 
     * Logger initialization.
     * Default baud rate: 115200
     * Default log level: LOG_LEVEL_DEBUG
     * @note If USB_UART_RX and USB_UART_TX 
     * are defined as HAL_PIN_NC, you will 
     * need to define them manually for log to work. 
     * See @b LOG_MAP_USB_UART macro definition for detailed explanation.
     */
    LOG_MAP_USB_UART( log_cfg );
    log_init( &logger, &log_cfg );
    log_info( &logger, " Application Init " );

    // Click initialization.
    gnss8_cfg_setup( &gnss8_cfg );
    GNSS8_MAP_MIKROBUS( gnss8_cfg, MIKROBUS_1 );
    err_t init_flag  = gnss8_init( &gnss8, &gnss8_cfg );
    if ( UART_ERROR == init_flag ) 
    {
        log_error( &logger, " Application Init Error. " );
        log_info( &logger, " Please, run program again... " );

        for ( ; ; );
    }

    gnss8_clear_app_buf(  );
    log_info( &logger, " Application Task " );
}

Application Task

Reads data from device and wait's untill device is connected. While not connected it will log '.'. When conneceted and received data for latitude, longitude, and altitude it will log that data parsed from "GNGGA" command.


void application_task ( void ) 
{
    gnss8_process();

    err_t error_flag = gnss8_element_parser( RSP_GNGGA, RSP_GNGGA_LATITUDE_ELEMENT, 
                                             latitude_data );

    error_flag |= gnss8_element_parser(  RSP_GNGGA, RSP_GNGGA_LONGITUDE_ELEMENT, 
                                         longitude_data );

    error_flag |= gnss8_element_parser(  RSP_GNGGA, RSP_GNGGA_ALTITUDE_ELEMENT, 
                                         altitude_data );


    if ( error_flag == GNSS8_OK )
    {
        if ( last_error_flag != GNSS8_OK )
        {
            log_printf( &logger, "\r\n" );
        }
        log_printf( &logger, ">Latitude:\r\n - deg: %.2s \r\n - min: %s\r\n", 
                    latitude_data, &latitude_data[ 2 ] );

        log_printf( &logger, ">Longitude:\r\n - deg: %.3s \r\n - min: %s\r\n", 
                    longitude_data, &longitude_data[ 3 ] );

        log_printf( &logger, ">Altitude:\r\n - %sm\r\n", 
                    altitude_data );

        log_printf( &logger, "----------------------------------------\r\n" );
    }
    else if ( error_flag < GNSS8_ERROR )
    {
        if ( last_error_flag == GNSS8_OK )
        {
            log_printf( &logger, "Waiting for data " );
        }
        log_printf( &logger, "." );
    }

    if ( error_flag != GNSS8_ERROR )
    {
        last_error_flag = error_flag;
        gnss8_clear_app_buf(  );
    }
}

The full application code, and ready to use projects can be installed directly from NECTO Studio Package Manager(recommended way), downloaded from our LibStock™ or found on Mikroe github account.

Other Mikroe Libraries used in the example:

  • MikroSDK.Board
  • MikroSDK.Log
  • Click.GNSS8

Additional notes and informations

Depending on the development board you are using, you may need USB UART Click, USB UART 2 Click or RS232 Click to connect to your PC, for development systems with no UART to USB interface available on the board. UART terminal is available in all MikroElektronika compilers.


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