altitude3

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Altitude 3 Click

Altitude 3 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 : MikroE Team
• Date : Feb 2020.
• Type : I2C type

Software Support

Example Description

This application enables high-resolution barometric pressure measurement.

Example Libraries

• MikroSDK.Board
• MikroSDK.Log
• Click.Altitude3

Example Key Functions

• altitude3_cfg_setup Config Object Initialization function.

void altitude3_cfg_setup ( altitude3_cfg_t *cfg );

• altitude3_init Initialization function.

err_t altitude3_init ( altitude3_t *ctx, altitude3_cfg_t *cfg );

• altitude3_default_cfg Click Default Configuration function.

void altitude3_default_cfg ( altitude3_t *ctx );

• altitude3_soft_reset Function sends a command to perform a SW Reset of the device.

void altitude3_soft_reset ( altitude3_t *ctx );

• Function reads results of AD conversion, which consists of the 16bit temperature and 24bit
• altitude3_read_adc_results pressure data in determined order.

uint8_t altitude3_read_adc_results ( altitude3_t *ctx, uint8_t read_order );

• Function performs a calibration data reading, only once, and then reads a temperature and pressure
• data and calculates these values
• altitude3_get_data to standard units. Also calculates the altitude depending on the temperature and pressure data.

uint8_t altitude3_get_data ( altitude3_t *ctx, uint8_t read_order );

Application Init

Initializes I2C interface and performs a SW Reset of the device.

void application_init ( void )
{
    log_cfg_t log_cfg;
    altitude3_cfg_t cfg;

    /** 
     * 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.

    altitude3_cfg_setup( &cfg );
    ALTITUDE3_MAP_MIKROBUS( cfg, MIKROBUS_1 );
    altitude3_init( &altitude3, &cfg );

    altitude3_default_cfg ( &altitude3 );

    log_printf( &logger, "** Altitude 3 Click is initialized **\r\n\r\n" );
}

Application Task

Selects the desired measurement mode and data reading order, and after that calculates the temperature, pressure and altitude data to standard units and shows results to uart terminal.

void application_task ( void )
{
    uint8_t response;

    response = altitude3_measurement_mode( &altitude3, ALTITUDE3_NORMAL_T_FIRST );

    Delay_ms ( 100 );

    response = altitude3_get_data( &altitude3, response );
    
    if ( response != ALTITUDE3_ERROR )
    {
        log_printf( &logger, "Temperature is : %d C\r\n", ( int16_t ) altitude3.sens_data.temperature );
       
        log_printf( &logger, "Pressure is : %u  mbar[hPa]\r\n", ( uint16_t ) altitude3.sens_data.pressure );
    
        log_printf( &logger, "Altitude is : %d m\r\n\r\n", ( int16_t ) altitude3.sens_data.altitude );

        Delay_ms ( 400 );
    }
}

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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