gnss9

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GNSS 9 Click

GNSS 9 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.

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Click Library

• Author : Stefan Ilic
• Date : Jan 2024.
• Type : UART/I2C type

Software Support

Example Description

This example demonstrates the use of GNSS 9 Click by reading and displaying the GNSS coordinates.

Example Libraries

• MikroSDK.Board
• MikroSDK.Log
• Click.GNSS9

Example Key Functions

• gnss9_cfg_setup Config Object Initialization function.

  void gnss9_cfg_setup ( gnss9_cfg_t *cfg );

• gnss9_init Initialization function.

  err_t gnss9_init ( gnss9_t *ctx, gnss9_cfg_t *cfg );

• gnss9_get_pps_pin This function returns the PPS pin logic state.

  uint8_t gnss9_get_pps_pin ( gnss9_t *ctx );

• gnss9_reset_device This function resets the device by toggling the RST pin.

  void gnss9_reset_device ( gnss9_t *ctx );

• gnss9_parse_gpgga This function parses the GPGGA data from the read response buffer.

  err_t gnss9_parse_gpgga ( uint8_t *rsp_buf, uint8_t gpgga_element, uint8_t *element_data );

Application Init

Initializes the driver and resets the Click board.

void application_init ( void )
{
    log_cfg_t log_cfg;  
    gnss9_cfg_t gnss9_cfg;  

    LOG_MAP_USB_UART( log_cfg );
    log_init( &logger, &log_cfg );
    log_info( &logger, " Application Init " );
 
    // Click initialization.
    gnss9_cfg_setup( &gnss9_cfg );
    GNSS9_MAP_MIKROBUS( gnss9_cfg, MIKROBUS_1 );
    err_t init_flag = gnss9_init( &gnss9, &gnss9_cfg );
    if ( ( UART_ERROR == init_flag ) || ( I2C_MASTER_ERROR == init_flag ) )
    {
        log_error( &logger, " Communication init." );
        for ( ; ; );
    }
    
    log_info( &logger, " Application Task " );
}

Application Task

Reads the received data, parses the GPGGA 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 ( GNSS9_OK == gnss9_process( &gnss9 ) )
    {
        if ( PROCESS_BUFFER_SIZE == app_buf_len )
        {
            gnss9_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.

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