press

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PRESS Click

PRESS 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 : Nenad Filipovic
• Date : Aug 2023.
• Type : I2C type

Software Support

Example Description

This example demonstrates the use of PRESS Click board™ by reading and displaying the pressure, temperature and Qvar measurements.

Example Libraries

• MikroSDK.Board
• MikroSDK.Log
• Click.PRESS

Example Key Functions

• press_cfg_setup Config Object Initialization function.

void press_cfg_setup ( press_cfg_t *cfg );

• press_init Initialization function.

err_t press_init ( press_t *ctx, press_cfg_t *cfg );

• press_default_cfg Click Default Configuration function.

err_t press_default_cfg ( press_t *ctx );

• press_get_measurement_data PRESS gets the measurement data function.

err_t press_get_measurement_data ( press_t *ctx, float *pressure, float *temperature );

• press_get_ah_qvar_data PRESS gets the AH/Qvar data function.

err_t press_get_ah_qvar_data ( press_t *ctx, float *ah_qvar );

• press_sw_reset PRESS software reset function.

err_t press_sw_reset ( press_t *ctx );

Application Init

The initialization of I2C module and log UART. After driver initialization, the app sets the default configuration.

void application_init ( void ) 
{
    log_cfg_t log_cfg;  /**< Logger config object. */
    press_cfg_t press_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.
    press_cfg_setup( &press_cfg );
    PRESS_MAP_MIKROBUS( press_cfg, MIKROBUS_1 );
    if ( I2C_MASTER_ERROR == press_init( &press, &press_cfg ) ) 
    {
        log_error( &logger, " Communication init." );
        for ( ; ; );
    }
    
    if ( PRESS_ERROR == press_default_cfg ( &press ) )
    {
        log_error( &logger, " Default configuration." );
        for ( ; ; );
    }
    log_info( &logger, " Application Task " );
    
#if ( EXAMPLE_MODE == EXAMPLE_MODE_PRESS_TEMP )
    log_printf( &logger, " Pressure and Temperature\r\n" );
#elif ( EXAMPLE_MODE == EXAMPLE_MODE_SWIPE_SENSING )
    if ( PRESS_OK == press_config_ah_qvar( &press, PRESS_AH_QVAR_ENABLE ) )
    {
        log_printf( &logger, " Swipe sensing\r\n" );
    }
    else
    {
        log_error( &logger, " Qvar configuration.\r\n" );
        for ( ; ; );
    }
#endif
    log_printf( &logger, " ______________________ \r\n" );
    Delay_ms ( 1000 );
}

Application Task

The demo application shows the module working depending on the example mode:

• EXAMPLE_MODE_PRESS_TEMP: Reads and displays the Pressure [mBar] and Temperature [degree Celsius] data.
• EXAMPLE_MODE_SWIPE_SENSING: Detect a touch or a swipe. Results are being sent to the UART Terminal, where you can track their changes.

void application_task ( void ) 
{
#if ( EXAMPLE_MODE == EXAMPLE_MODE_PRESS_TEMP )
    example_pressure_temperature( );
#elif ( EXAMPLE_MODE == EXAMPLE_MODE_SWIPE_SENSING )
    example_swipe_sensing( );
#endif
}

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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