gnssrtk3da

---

GNSS RTK 3 DA Click

GNSS RTK 3 DA Click demo application is developed using the NECTO Studio, ensuring compatibility with mikroSDK's open-source libraries and tools. Designed for plug-and-play implementation and testing, the demo is fully compatible with all development, starter, and mikromedia boards featuring a mikroBUS™ socket.

---

Click Library

• Author : Stefan Filipovic
• Date : Sep 2023.
• Type : UART/I2C type

Software Support

Example Description

This example demonstrates the use of GNSS RTK 3 DA Click by reading and displaying the GNSS coordinates.

Example Libraries

• MikroSDK.Board
• MikroSDK.Log
• Click.GNSSRTK3DA

Example Key Functions

• gnssrtk3da_cfg_setup Config Object Initialization function.

void gnssrtk3da_cfg_setup ( gnssrtk3da_cfg_t *cfg );

• gnssrtk3da_init Initialization function.

err_t gnssrtk3da_init ( gnssrtk3da_t *ctx, gnssrtk3da_cfg_t *cfg );

• gnssrtk3da_enable_device This function enables the device by setting the CEN pin to high logic state.

void gnssrtk3da_enable_device ( gnssrtk3da_t *ctx );

• gnssrtk3da_generic_read This function reads a desired number of data bytes by using UART or I2C serial interface.

err_t gnssrtk3da_generic_read ( gnssrtk3da_t *ctx, uint8_t *data_out, uint16_t len );

• gnssrtk3da_parse_gga This function parses the GGA data from the read response buffer.

err_t gnssrtk3da_parse_gga ( uint8_t *rsp_buf, uint8_t gga_element, uint8_t *element_data );

Application Init

Initializes the driver and enables the Click board.

void application_init ( void )
{
    log_cfg_t log_cfg;  /**< Logger config object. */
    gnssrtk3da_cfg_t gnssrtk3da_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.
    gnssrtk3da_cfg_setup( &gnssrtk3da_cfg );
    GNSSRTK3DA_MAP_MIKROBUS( gnssrtk3da_cfg, MIKROBUS_1 );
    if ( GNSSRTK3DA_OK != gnssrtk3da_init( &gnssrtk3da, &gnssrtk3da_cfg ) ) 
    {
        log_error( &logger, " Communication init." );
        for ( ; ; );
    }
    
    gnssrtk3da_enable_device ( &gnssrtk3da );
    
    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 ( GNSSRTK3DA_OK == gnssrtk3da_process( &gnssrtk3da ) ) 
    {
        gnssrtk3da_parser_application( app_buf );
    }
}

Application Output

This Click board can be interfaced and monitored in two ways:

• Application Output - Use the "Application Output" window in Debug mode for real-time data monitoring. Set it up properly by following this tutorial.
• UART Terminal - Monitor data via the UART Terminal using a USB to UART converter. For detailed instructions, check out this tutorial.

Additional Notes and Information

The complete application code and a ready-to-use project are available through the NECTO Studio Package Manager for direct installation in the NECTO Studio. The application code can also be found on the MIKROE GitHub account.

---