gnssmax2

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GNSS MAX 2 Click

GNSS MAX 2 Click is a compact add-on board designed for precise positioning in urban environments. This board features the MAX-F10S, a professional-grade L1/L5 dual-band GNSS receiver from u-blox. This receiver uses dual-band GNSS technology to provide meter-level accuracy, even in challenging urban areas, by mitigating multipath effects. It supports concurrent GPS, Galileo, and BeiDou constellation tracking, offering robust performance with integrated filters and a low-noise amplifier for protection against RF interference. GNSS MAX 2 Click is ideal for vehicle tracking, fleet management, and micromobility solutions, even with small antennas.

Click Product page

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Click library

• Author : Stefan Filipovic
• Date : Jul 2024.
• Type : UART/I2C type

Software Support

We provide a library for the GNSS MAX 2 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 GNSS MAX 2 Click driver.

Standard key functions :

• gnssmax2_cfg_setup Config Object Initialization function.

void gnssmax2_cfg_setup ( gnssmax2_cfg_t *cfg );

• gnssmax2_init Initialization function.

err_t gnssmax2_init ( gnssmax2_t *ctx, gnssmax2_cfg_t *cfg );

• gnssmax2_default_cfg Click Default Configuration function.

err_t gnssmax2_default_cfg ( gnssmax2_t *ctx );

Example key functions :

• gnssmax2_generic_read This function reads a desired number of data bytes by using UART or I2C serial interface.

err_t gnssmax2_generic_read ( gnssmax2_t *ctx, uint8_t *data_out, uint16_t len );

• gnssmax2_parse_gga This function parses the GGA data from the read response buffer.

err_t gnssmax2_parse_gga ( uint8_t *rsp_buf, uint8_t gga_element, uint8_t *element_data );

• gnssmax2_reset_device This function resets the device by toggling the RST pin.

void gnssmax2_reset_device ( gnssmax2_t *ctx );

Example Description

This example demonstrates the use of GNSS MAX 2 Click by reading and displaying the GNSS coordinates.

The demo application is composed of two sections :

Application Init

Initializes the driver and logger.

void application_init ( void )
{
    log_cfg_t log_cfg;  /**< Logger config object. */
    gnssmax2_cfg_t gnssmax2_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.
    gnssmax2_cfg_setup( &gnssmax2_cfg );
    GNSSMAX2_MAP_MIKROBUS( gnssmax2_cfg, MIKROBUS_1 );
    if ( GNSSMAX2_OK != gnssmax2_init( &gnssmax2, &gnssmax2_cfg ) ) 
    {
        log_error( &logger, " Communication init." );
        for ( ; ; );
    }
    
    log_info( &logger, " Application Task " );
}

Application Task

Reads the received data, parses the NMEA GGA info from it, and once it receives the position fix it will start displaying the coordinates on the USB UART.

void application_task ( void )
{
    if ( GNSSMAX2_OK == gnssmax2_process( &gnssmax2 ) ) 
    {
        gnssmax2_parser_application( 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.GNSSMAX2

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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