mosaic

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Mosaic Click

Mosaic 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 Filipovic
• Date : Mar 2024.
• Type : UART type

Software Support

Example Description

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

Example Libraries

• MikroSDK.Board
• MikroSDK.Log
• Click.Mosaic

Example Key Functions

• mosaic_cfg_setup Config Object Initialization function.

void mosaic_cfg_setup ( mosaic_cfg_t *cfg );

• mosaic_init Initialization function.

err_t mosaic_init ( mosaic_t *ctx, mosaic_cfg_t *cfg );

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

err_t mosaic_generic_read ( mosaic_t *ctx, uint8_t *data_out, uint16_t len );

• mosaic_enable_nmea_output This function enables the NMEA output with the selected message parameters and an output interval.

void mosaic_enable_nmea_output ( mosaic_t *ctx, uint8_t *msg_param, uint8_t *interval );

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

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

Application Init

Initializes the driver, reads the NMEA version, and enables the NMEA output.

void application_init ( void )
{
    log_cfg_t log_cfg;  /**< Logger config object. */
    mosaic_cfg_t mosaic_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.
    mosaic_cfg_setup( &mosaic_cfg );
    MOSAIC_MAP_MIKROBUS( mosaic_cfg, MIKROBUS_1 );
    if ( UART_ERROR == mosaic_init( &mosaic, &mosaic_cfg ) ) 
    {
        log_error( &logger, " Communication init." );
        for ( ; ; );
    }

    if ( MOSAIC_OK != mosaic_wait_prompt( &mosaic ) )
    {
        log_error( &logger, " No connection prompt detected." );
        for ( ; ; );
    }
    mosaic_log_app_buf( );
    mosaic_clear_app_buf( );
    Delay_ms ( 100 );

    mosaic_send_cmd( &mosaic, MOSAIC_CMD_GET_NMEA_VERSION );
    mosaic_wait_prompt( &mosaic );
    mosaic_log_app_buf( );
    mosaic_clear_app_buf( );
    Delay_ms ( 100 );

    mosaic_enable_nmea_output( &mosaic, MOSAIC_SNO_MESSAGES_GGA, MOSAIC_SNO_INTERVAL_SEC1 );
    mosaic_wait_prompt( &mosaic );
    mosaic_log_app_buf( );
    mosaic_clear_app_buf( );
    Delay_ms ( 100 );
    
    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 )
{
    mosaic_process( &mosaic );
    if ( app_buf_len > ( sizeof ( MOSAIC_NMEA_GGA ) + MOSAIC_GGA_ELEMENT_SIZE ) ) 
    {
        mosaic_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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