gnss21 2.2.1
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gnss21


GNSS 21 Click

GNSS 21 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 2024.
  • Type : UART/I2C type

Software Support

Example Description

This example demonstrates the use of GNSS 21 Click by reading and displaying the GNSS coordinates.

Example Libraries

  • MikroSDK.Board
  • MikroSDK.Log
  • Click.GNSS21

Example Key Functions

  • gnss21_cfg_setup Config Object Initialization function.
    void gnss21_cfg_setup(gnss21_cfg_t *cfg)
    GNSS 21 configuration object setup function.
    GNSS 21 Click configuration object.
    Definition gnss21.h:199
  • gnss21_init Initialization function.
    err_t gnss21_init ( gnss21_t *ctx, gnss21_cfg_t *cfg );
    struct gnss21_s gnss21_t
    GNSS 21 Click context object.
    err_t gnss21_init(gnss21_t *ctx, gnss21_cfg_t *cfg)
    GNSS 21 initialization function.
  • gnss21_generic_read This function reads a desired number of data bytes by using UART or I2C serial interface.
    err_t gnss21_generic_read ( gnss21_t *ctx, uint8_t *data_out, uint16_t len );
    err_t gnss21_generic_read(gnss21_t *ctx, uint8_t *data_out, uint16_t len)
    GNSS 21 data reading function.
  • gnss21_parse_gga This function parses the GGA data from the read response buffer.
    err_t gnss21_parse_gga ( uint8_t *rsp_buf, uint8_t gga_element, uint8_t *element_data );
    err_t gnss21_parse_gga(uint8_t *rsp_buf, uint8_t gga_element, uint8_t *element_data)
    GNSS 21 parse GGA function.
  • gnss21_reset_device This function resets the device by toggling the RST pin.
    void gnss21_reset_device(gnss21_t *ctx)
    GNSS 21 reset device function.

Application Init

Initializes the driver and logger.

void application_init ( void )
{
log_cfg_t log_cfg;
gnss21_cfg_t gnss21_cfg;
LOG_MAP_USB_UART( log_cfg );
log_init( &logger, &log_cfg );
log_info( &logger, " Application Init " );
// Click initialization.
gnss21_cfg_setup( &gnss21_cfg );
GNSS21_MAP_MIKROBUS( gnss21_cfg, MIKROBUS_1 );
if ( GNSS21_OK != gnss21_init( &gnss21, &gnss21_cfg ) )
{
log_error( &logger, " Communication init." );
for ( ; ; );
}
log_info( &logger, " Application Task " );
}
@ GNSS21_OK
Definition gnss21.h:230
#define GNSS21_MAP_MIKROBUS(cfg, mikrobus)
MikroBUS pin mapping.
Definition gnss21.h:137
void application_init(void)
Definition main.c:78

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 ( GNSS21_OK == gnss21_process( &gnss21 ) )
{
gnss21_parser_application( app_buf );
}
}
void application_task(void)
Definition main.c:108

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.