barometer8

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Barometer 8 Click

Barometer 8 Click demo application is developed using the NECTO Studio, ensuring compatibility with mikroSDK's open-source libraries and tools. Designed for plug-and-play implementation and testing, the demo is fully compatible with all development, starter, and mikromedia boards featuring a mikroBUS™ socket.

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Click Library

• Author : Stefan Filipovic
• Date : Mar 2022.
• Type : I2C/SPI type

Software Support

Example Description

This example demonstrates the use of Barometer 8 Click board by reading and displaying the pressure and temperature values.

Example Libraries

• MikroSDK.Board
• MikroSDK.Log
• Click.Barometer8

Example Key Functions

• barometer8_cfg_setup Config Object Initialization function.

void barometer8_cfg_setup ( barometer8_cfg_t *cfg );

• barometer8_init Initialization function.

err_t barometer8_init ( barometer8_t *ctx, barometer8_cfg_t *cfg );

• barometer8_default_cfg Click Default Configuration function.

err_t barometer8_default_cfg ( barometer8_t *ctx );

• barometer8_write_register This function writes a desired data byte to the selected register.

err_t barometer8_write_register ( barometer8_t *ctx, uint8_t reg, uint8_t data_in );

• barometer8_read_register This function reads a data byte from the selected register.

err_t barometer8_read_register ( barometer8_t *ctx, uint8_t reg, uint8_t *data_out );

• barometer8_read_data This function reads the pressure and temperature raw data and converts them to mBar and Celsius.

err_t barometer8_read_data ( barometer8_t *ctx, float *pressure, float *temperature );

Application Init

Initializes the driver and performs the Click default configuration.

void application_init ( void )
{
    log_cfg_t log_cfg;  /**< Logger config object. */
    barometer8_cfg_t barometer8_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.
    barometer8_cfg_setup( &barometer8_cfg );
    BAROMETER8_MAP_MIKROBUS( barometer8_cfg, MIKROBUS_1 );
    err_t init_flag  = barometer8_init( &barometer8, &barometer8_cfg );
    if ( ( I2C_MASTER_ERROR == init_flag ) || ( SPI_MASTER_ERROR == init_flag ) )
    {
        log_error( &logger, " Communication init." );
        for ( ; ; );
    }
    
    if ( BAROMETER8_ERROR == barometer8_default_cfg ( &barometer8 ) )
    {
        log_error( &logger, " Default configuration." );
        for ( ; ; );
    }
    
    log_info( &logger, " Application Task " );
}

Application Task

Reads and displays the pressure and temperature data on the USB UART every 250ms approximately, as per output data rate (ODR) bits configuration.

void application_task ( void )
{
    float pressure, temperature;
    if ( BAROMETER8_OK == barometer8_read_data ( &barometer8, &pressure, &temperature ) )
    {
        log_printf ( &logger, " Pressure: %.1f mBar\r\n", pressure );
        log_printf ( &logger, " Temperature: %.2f C\r\n\n", temperature );
    }
    Delay_ms ( 5 );
}

Application Output

This Click board can be interfaced and monitored in two ways:

• Application Output - Use the "Application Output" window in Debug mode for real-time data monitoring. Set it up properly by following this tutorial.
• UART Terminal - Monitor data via the UART Terminal using a USB to UART converter. For detailed instructions, check out this tutorial.

Additional Notes and Information

The complete application code and a ready-to-use project are available through the NECTO Studio Package Manager for direct installation in the NECTO Studio. The application code can also be found on the MIKROE GitHub account.

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