Barometer 5 click

Barometer 5 Click is a compact add-on board used to measure air pressure in a specific environment. This board features the MS5637-02BA03, a high accuracy low voltage barometric and temperature sensor from TE Connectivity Measurement Specialties. The MS5637-02BA03 includes a high-linearity pressure sensor and an ultra-low-power 24-bit ΔΣ ADC with internal factory-calibrated coefficients, providing a precise digital 24-bit pressure and temperature value, and different operation modes allowing the user to optimize for conversion speed and current consumption. It comes with a configurable host interface that supports I2C serial communication and measures pressure in a range from 300mbar up to 1.2bar with an accuracy of ±2mbar over a wide operating temperature range.

click Product page

Click library

• Author : Nenad Filipovic
• Date : Oct 2021.
• Type : I2C type

Software Support

We provide a library for the Barometer5 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 5 Click driver.

Standard key functions :

• barometer5_cfg_setup Config Object Initialization function.

  void barometer5_cfg_setup ( barometer5_cfg_t *cfg );

• barometer5_init Initialization function.

  err_t barometer5_init ( barometer5_t *ctx, barometer5_cfg_t *cfg );

• barometer5_default_cfg Click Default Configuration function.

  err_t barometer5_default_cfg ( barometer5_t *ctx );

Example key functions :

• barometer5_get_data Barometer 5 get data function.

  err_t barometer5_get_data ( barometer5_t *ctx, float *temperature, float *pressure );

• barometer5_get_pressure Barometer 5 get pressure data function.

  err_t barometer5_get_pressure ( barometer5_t *ctx, float *pressure );

• barometer5_get_temperature Barometer 5 get temperature data function.

  err_t barometer5_get_temperature ( barometer5_t *ctx, float *temperature );

Example Description

This library contains API for Barometer 5 Click driver. The demo application reads and calculate temperature and pressure data.

The demo application is composed of two sections :

Application Init

Initializes I2C driver and log UART. After driver initialization the app set default settings.

void application_init ( void ) 
{
    log_cfg_t log_cfg;  /**< Logger config object. */
    barometer5_cfg_t barometer5_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.
    barometer5_cfg_setup( &barometer5_cfg );
    BAROMETER5_MAP_MIKROBUS( barometer5_cfg, MIKROBUS_1 );
    if ( I2C_MASTER_ERROR == barometer5_init( &barometer5, &barometer5_cfg ) ) 
    {
        log_error( &logger, " Communication init." );
        for ( ; ; );
    }

    if ( BAROMETER5_ERROR == barometer5_default_cfg ( &barometer5 ) )
    {
        log_error( &logger, " Default configuration." );
        for ( ; ; );
    }

    log_info( &logger, " Application Task " );
    log_printf( &logger, "---------------------------\r\n" );
    Delay_ms ( 100 );
}

Application Task

This is an example that demonstrates the use of the Barometer 5 Click board™. In this example, display the Pressure ( mBar ) and Temperature ( degree Celsius ) data. Results are being sent to the Usart Terminal where you can track their changes.

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

    if ( barometer5_get_data( &barometer5, &temperature, &pressure ) == BAROMETER5_OK )
    {
        log_printf( &logger, " Pressure    : %.2f mbar   \r\n", pressure );
        log_printf( &logger, " Temperature : %.2f C      \r\n", temperature );
        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.Barometer5

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.