gnssrtk3da  2.1.0.0
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GNSS RTK 3 DA Click

GNSS RTK 3 Click is a compact add-on board that enhances the precision of position data derived from satellite-based positioning systems. This board features the LC29HDA, a dual-band, multi-castellation GNSS module from Quectel. This module supports the concurrent reception of all five global GNSS constellations: GPS, BDS, Galileo, GZSS, and GLONASS. It can receive and track many visible satellites in multi-bands, significantly mitigating the multipath effect in deep urban canyons and improving positioning accuracy.

Click Product page


Click library

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

Software Support

We provide a library for the GNSS RTK 3 DA 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 RTK 3 DA Click driver.

Standard key functions :

Example key functions :

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

Example Description

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

The demo application is composed of two sections :

Application Init

Initializes the driver and enables the Click board.

void application_init ( void )
{
log_cfg_t log_cfg;
gnssrtk3da_cfg_t gnssrtk3da_cfg;
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 );
}
}

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.GNSSRTK3DA

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.


gnssrtk3da_s
GNSS RTK 3 DA Click context object.
Definition: gnssrtk3da.h:176
gnssrtk3da_parse_gga
err_t gnssrtk3da_parse_gga(uint8_t *rsp_buf, uint8_t gga_element, uint8_t *element_data)
GNSS RTK 3 DA parse GGA function.
gnssrtk3da_cfg_setup
void gnssrtk3da_cfg_setup(gnssrtk3da_cfg_t *cfg)
GNSS RTK 3 DA configuration object setup function.
application_task
void application_task(void)
Definition: main.c:110
gnssrtk3da_init
err_t gnssrtk3da_init(gnssrtk3da_t *ctx, gnssrtk3da_cfg_t *cfg)
GNSS RTK 3 DA initialization function.
gnssrtk3da_cfg_t
GNSS RTK 3 DA Click configuration object.
Definition: gnssrtk3da.h:200
application_init
void application_init(void)
Definition: main.c:78
gnssrtk3da_enable_device
void gnssrtk3da_enable_device(gnssrtk3da_t *ctx)
GNSS RTK 3 DA enable device function.
gnssrtk3da_generic_read
err_t gnssrtk3da_generic_read(gnssrtk3da_t *ctx, uint8_t *data_out, uint16_t len)
GNSS RTK 3 DA data reading function.
GNSSRTK3DA_OK
@ GNSSRTK3DA_OK
Definition: gnssrtk3da.h:229
GNSSRTK3DA_MAP_MIKROBUS
#define GNSSRTK3DA_MAP_MIKROBUS(cfg, mikrobus)
MikroBUS pin mapping.
Definition: gnssrtk3da.h:140