gnss8  2.0.0.0
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GNSS 8 click

GNSS 8 Click is a compact add-on board that provides fast positioning capability. This board features the LC79DA, a high-performance dual-band and multi-constellation GNSS module from Quectel Wireless Solutions.

click Product page


Click library

  • Author : Luka Filipovic
  • Date : Jun 2021.
  • Type : UART type

Software Support

We provide a library for the GNSS8 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 GNSS8 Click driver.

Standard key functions :

Example key functions :

Example Description

This example showcases device abillity to read data outputed

from device and show it's coordinates and altitude when connected.

The demo application is composed of two sections :

Application Init

Initializes host communication modules, additioaln GPIO's used

for control of device and resets device.

void application_init ( void )
{
log_cfg_t log_cfg;
gnss8_cfg_t gnss8_cfg;
LOG_MAP_USB_UART( log_cfg );
log_init( &logger, &log_cfg );
log_info( &logger, " Application Init " );
// Click initialization.
gnss8_cfg_setup( &gnss8_cfg );
GNSS8_MAP_MIKROBUS( gnss8_cfg, MIKROBUS_1 );
err_t init_flag = gnss8_init( &gnss8, &gnss8_cfg );
if ( UART_ERROR == init_flag )
{
log_error( &logger, " Application Init Error. " );
log_info( &logger, " Please, run program again... " );
for ( ; ; );
}
gnss8_clear_app_buf( );
log_info( &logger, " Application Task " );
}

Application Task

Reads data from device and wait's untill device is connected.

While not connected it will log '.'. When conneceted and received data for latitude, longitude, and altitude it will log that data parsed from "GNGGA" command.

void application_task ( void )
{
gnss8_process();
err_t error_flag = gnss8_element_parser( RSP_GNGGA, RSP_GNGGA_LATITUDE_ELEMENT,
latitude_data );
error_flag |= gnss8_element_parser( RSP_GNGGA, RSP_GNGGA_LONGITUDE_ELEMENT,
longitude_data );
error_flag |= gnss8_element_parser( RSP_GNGGA, RSP_GNGGA_ALTITUDE_ELEMENT,
altitude_data );
if ( error_flag == GNSS8_OK )
{
{
log_printf( &logger, "\r\n" );
}
log_printf( &logger, ">Latitude:\r\n - deg: %.2s \r\n - min: %s\r\n",
latitude_data, &latitude_data[ 2 ] );
log_printf( &logger, ">Longitude:\r\n - deg: %.3s \r\n - min: %s\r\n",
longitude_data, &longitude_data[ 3 ] );
log_printf( &logger, ">Altitude:\r\n - %sm\r\n",
altitude_data );
log_printf( &logger, "----------------------------------------\r\n" );
}
else if ( error_flag < GNSS8_ERROR )
{
{
log_printf( &logger, "Waiting for data " );
}
log_printf( &logger, "." );
}
if ( error_flag != GNSS8_ERROR )
{
last_error_flag = error_flag;
gnss8_clear_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.GNSS8

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.


gnss8_init
err_t gnss8_init(gnss8_t *ctx, gnss8_cfg_t *cfg)
GNSS 8 initialization function.
gnss8_t
GNSS 8 Click context object.
Definition: gnss8.h:89
application_task
void application_task(void)
Definition: main.c:137
gnss8_generic_read
err_t gnss8_generic_read(gnss8_t *ctx, char *data_buf, uint16_t max_len)
Data reading function.
last_error_flag
err_t last_error_flag
Definition: main.c:56
RSP_GNGGA_ALTITUDE_ELEMENT
#define RSP_GNGGA_ALTITUDE_ELEMENT
Definition: main.c:43
gnss8_generic_write
err_t gnss8_generic_write(gnss8_t *ctx, char *data_buf, uint16_t len)
Data writing function.
gnss8_set_ap_req
void gnss8_set_ap_req(gnss8_t *ctx, uint8_t state)
Set AP request pin state.
GNSS8_ERROR
@ GNSS8_ERROR
Definition: gnss8.h:139
application_init
void application_init(void)
Definition: main.c:103
RSP_GNGGA
#define RSP_GNGGA
Definition: main.c:37
GNSS8_MAP_MIKROBUS
#define GNSS8_MAP_MIKROBUS(cfg, mikrobus)
MikroBUS pin mapping.
Definition: gnss8.h:73
gnss8_cfg_t
GNSS 8 Click configuration object.
Definition: gnss8.h:112
gnss8_cfg_setup
void gnss8_cfg_setup(gnss8_cfg_t *cfg)
GNSS 8 configuration object setup function.
GNSS8_OK
@ GNSS8_OK
Definition: gnss8.h:138
RSP_GNGGA_LATITUDE_ELEMENT
#define RSP_GNGGA_LATITUDE_ELEMENT
Definition: main.c:41
RSP_GNGGA_LONGITUDE_ELEMENT
#define RSP_GNGGA_LONGITUDE_ELEMENT
Definition: main.c:42