altitude

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Altitude Click

Altitude 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 : Nemanja Medakovic
• Date : Oct 2019.
• Type : I2C type

Software Support

Example Description

This is a example which demonstrates the use of Altitude Click board. This demo example offers the altitude [m], pressure [mbar] and temperature [deg C] measurements from sensor.

Example Libraries

• MikroSDK.Board
• MikroSDK.Log
• Click.Altitude

Example Key Functions

• altitude_cfg_setup Configuration Object Setup function.

void altitude_cfg_setup ( altitude_cfg_t *cfg );

• altitude_init Click Initialization function.

altitude_err_t altitude_init ( altitude_t *ctx, altitude_cfg_t *cfg );

• altitude_default_cfg Click Default Configuration function.

void altitude_default_cfg ( altitude_t *ctx );

• altitude_generic_single_write Generic Single Write function.

altitude_err_t altitude_generic_single_write ( altitude_t *ctx, i2c_master_data_t reg_addr, i2c_master_data_t data_in );

• altitude_generic_multiple_read Generic Multiple Read function.

altitude_err_t altitude_generic_multiple_read ( altitude_t *ctx, i2c_master_data_t reg_addr, i2c_master_data_t *data_out, uint8_t n_data );

• altitude_get_altitude Altitude Get function.

float altitude_get_altitude ( altitude_t *ctx );

Application Init

Initializes I2C driver and all used pins, performs a default configuration for Altitude Click board and initializes the uart console for results logging.

void application_init( void )
{
    altitude_cfg_t altitude_cfg;
    log_cfg_t log_cfg;

    //  Click initialization.
    altitude_cfg_setup( &altitude_cfg );
    ALTITUDE_MAP_MIKROBUS( altitude_cfg, MIKROBUS_1 );
    altitude_init( &altitude, &altitude_cfg );
    altitude_default_cfg( &altitude );

    /** 
     * 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( &console, &log_cfg );
    log_init( &console, &console_cfg );
    log_printf( &console, "***  Altitude initialization done  ***\r\n" );
    log_printf( &console, "**************************************\r\n" );
}

Application Task

Shows two different uses of sensor, altimeter and barometer mode. Reads the altitude, pressure and temperature results in standard units and sends this results to the console.

void application_task( void )
{
    float altitude_result;
    float pressure_result;
    float temperature_result;

    //  Altimeter sensor mode for altitude data reading.
    altitude_set_sensor_mode( &altitude, ALTITUDE_SENSMOD_ALTIMETER );
    Delay_ms ( 100 );

    while ( 0 == altitude_get_drdy_status( &altitude, ALTITUDE_STATUS_FLAG_PDR ) );

    altitude_result = altitude_get_altitude( &altitude );

    //  Barometer sensor mode for pressure data reading.
    altitude_set_sensor_mode( &altitude, ALTITUDE_SENSMOD_BAROMETER );
    Delay_ms ( 100 );

    while ( 0 == altitude_get_drdy_status( &altitude, ALTITUDE_STATUS_FLAG_PDR ) );

    pressure_result = altitude_get_pressure( &altitude );
    temperature_result = altitude_get_temperature( &altitude );

    log_printf( &console, "** Altitude is %.2f m\r\n", altitude_result );
    log_printf( &console, "** Pressure is %.2f mbar\r\n", pressure_result );
    log_printf( &console, "** Temperature is %.2f Celsius\r\n", temperature_result );
    log_printf( &console, "**************************************\r\n" );
}

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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