Barometer 6 Click

Barometer 6 Click is a compact add-on board used to measure air pressure in a specific environment. This board features the 2SMPB-02E, a high-accuracy digital barometric air pressure sensor with low current consumption from Omron Electronics. The 2SMPB-02E has a calibration parameter for broader pressure and temperature range, features a MEMS chip for sensing air pressure and an IC chip for signal processing.

Click Product page

Click library

• Author : Stefan Ilic
• Date : Dec 2021.
• Type : I2C/SPI type

Software Support

We provide a library for the Barometer 6 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 6 Click driver.

Standard key functions :

• barometer6_cfg_setup Config Object Initialization function.

  void barometer6_cfg_setup ( barometer6_cfg_t *cfg );

• barometer6_init Initialization function.

  err_t barometer6_init ( barometer6_t *ctx, barometer6_cfg_t *cfg );

• barometer6_default_cfg Click Default Configuration function.

  err_t barometer6_default_cfg ( barometer6_t *ctx );

Example key functions :

• barometer6_hardware_reset Barometer 6 hardware reset function.

  void barometer6_hardware_reset ( barometer6_t *ctx );

• barometer6_set_mode Barometer 6 set operation mode function.

  void barometer6_set_mode ( barometer6_t *ctx, uint8_t mode );

• barometer6_read_temperature_value Barometer 6 get temperature value function.

  void barometer6_read_temperature_value ( barometer6_t *ctx, float *temp_out );

Example Description

This is an example that demonstrates the use of the Barometer 6 Click board.

The demo application is composed of two sections :

Application Init

Initalizes SPI or I2C driver, applies default settings and reads Chip ID.

void application_init ( void )
{
    log_cfg_t log_cfg;  /**< Logger config object. */
    barometer6_cfg_t barometer6_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.
    barometer6_cfg_setup( &barometer6_cfg );
    BAROMETER6_MAP_MIKROBUS( barometer6_cfg, MIKROBUS_1 );
    err_t init_flag  = barometer6_init( &barometer6, &barometer6_cfg );
    if ( ( I2C_MASTER_ERROR == init_flag ) || ( SPI_MASTER_ERROR == init_flag ) )
    {
        log_error( &logger, " Communication init." );
        for ( ; ; );
    }

    barometer6_default_cfg ( &barometer6 );

    barometer6_read_id( &barometer6, &dev_id );
    if ( BAROMETER6_ID_VALUE != dev_id )
    {
        log_printf( &logger, " Device communication Error " );
        for ( ; ; );
    }

    log_printf( &logger, "- - - - - - - - - - - - - - -\r\n" );
    log_printf( &logger, " Device ID : 0x%.2X \r\n", ( uint16_t ) dev_id );
    log_printf( &logger, "- - - - - - - - - - - - - - -\r\n" );

    log_info( &logger, " Application Task " );
}

Application Task

Demonstrates use of Barometer 6 Click board by reading pressure and temperature data seconds and logging it on the UART terminal.

void application_task ( void )
{
    float pressure;
    float temperature;

    barometer6_read_temperature_value( &barometer6, &temperature );
    barometer6_read_preassure_value( &barometer6, &pressure );

    log_printf( &logger, " Temperature : %.2f C    \r\n", temperature );
    log_printf( &logger, " Pressure    : %.2f mBar \r\n", 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.Barometer6

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.