barometer9  2.1.0.0
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Barometer 9 Click

Barometer 9 Click is a compact add-on board ideal for precision activity tracking and indoor navigation/localization. This board features the ENS220, a barometric pressure and temperature sensor from ScioSense

Click Product page


Click library

  • Author : Stefan Ilic
  • Date : Nov 2023.
  • Type : I2C/SPI type

Software Support

We provide a library for the Barometer 9 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 Barometer 9 Click driver.

Standard key functions :

Example key functions :

Example Description

This example demonstrates the use of Barometer 9 Click board

by reading and displaying the pressure and temperature measurements.

The demo application is composed of two sections :

Application Init

The initialization of I2C or SPI module and log UART.

After driver initialization, the app sets the default configuration.

void application_init ( void )
{
log_cfg_t log_cfg;
barometer9_cfg_t barometer9_cfg;
LOG_MAP_USB_UART( log_cfg );
log_init( &logger, &log_cfg );
log_info( &logger, " Application Init " );
// Click initialization.
barometer9_cfg_setup( &barometer9_cfg );
BAROMETER9_MAP_MIKROBUS( barometer9_cfg, MIKROBUS_1 );
err_t init_flag = barometer9_init( &barometer9, &barometer9_cfg );
if ( ( I2C_MASTER_ERROR == init_flag ) || ( SPI_MASTER_ERROR == init_flag ) )
{
log_error( &logger, " Communication init." );
for ( ; ; );
}
Delay_ms ( 100 );
if ( BAROMETER9_ERROR == barometer9_default_cfg ( &barometer9 ) )
{
log_error( &logger, " Default configuration." );
for ( ; ; );
}
uint16_t device_id = 0;
barometer9_read_part_id ( &barometer9, &device_id );
if ( BAROMETER9_DEVICE_ID != device_id )
{
log_error( &logger, " Read error " );
for ( ; ; );
}
else
{
log_printf( &logger, " Device ID: 0x%.4X \r\n", device_id );
}
log_info( &logger, " Application Task " );
}

Application Task

The demo application reads and displays the Pressure [Pa] and Temperature [degree Celsius] data.

Results are being sent to the UART Terminal, where you can track their changes.

void application_task ( void )
{
float temperature = 0;
float pressure = 0;
barometer9_get_temperature( &barometer9, &temperature );
barometer9_get_pressure( &barometer9, &pressure );
log_printf( &logger, " Temperature: %.2f C \r\n Pressure %.3f Pa \r\n", temperature, pressure );
log_printf( &logger, " - - - - - - - - - - \r\n" );
Delay_ms ( 1000 );
}

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.Barometer9

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.


barometer9_cfg_t
Barometer 9 Click configuration object.
Definition: barometer9.h:254
barometer9_s
Barometer 9 Click context object.
Definition: barometer9.h:234
barometer9_get_temperature
err_t barometer9_get_temperature(barometer9_t *ctx, float *temperature)
Barometer 9 temperature reading function.
BAROMETER9_DEVICE_ID
#define BAROMETER9_DEVICE_ID
Barometer 9 Device ID value.
Definition: barometer9.h:163
barometer9_get_pressure
err_t barometer9_get_pressure(barometer9_t *ctx, float *pressure)
Barometer 9 pressure reading function.
barometer9_read_part_id
err_t barometer9_read_part_id(barometer9_t *ctx, uint16_t *part_id)
Barometer 9 Device ID reading function.
application_task
void application_task(void)
Definition: main.c:80
BAROMETER9_ERROR
@ BAROMETER9_ERROR
Definition: barometer9.h:281
barometer9_init
err_t barometer9_init(barometer9_t *ctx, barometer9_cfg_t *cfg)
Barometer 9 initialization function.
application_init
void application_init(void)
Definition: main.c:30
barometer9_default_cfg
err_t barometer9_default_cfg(barometer9_t *ctx)
Barometer 9 default configuration function.
barometer9_cfg_setup
void barometer9_cfg_setup(barometer9_cfg_t *cfg)
Barometer 9 configuration object setup function.
BAROMETER9_MAP_MIKROBUS
#define BAROMETER9_MAP_MIKROBUS(cfg, mikrobus)
MikroBUS pin mapping.
Definition: barometer9.h:199