compass3

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Compass 3 Click

Compass 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 : Jovan Stajkovic
• Date : Jan 2020.
• Type : I2C type

Software Support

Example Description

This demoapp measures the magnetic field surrounding the device.

Example Libraries

• MikroSDK.Board
• MikroSDK.Log
• Click.Compass3

Example Key Functions

• compass3_cfg_setup Config Object Initialization function.

void compass3_cfg_setup ( compass3_cfg_t *cfg );

• compass3_init Initialization function.

err_t compass3_init ( compass3_t *ctx, compass3_cfg_t *cfg );

• compass3_default_cfg Click Default Configuration function.

void compass3_default_cfg ( compass3_t *ctx );

• compass3_full_measurement Measures magnetic field surrounding the device.

void compass3_full_measurement ( compass3_t *ctx, float *x_val, float *y_val, float *z_val );

• compass3_read_temp Function is used to measure temperature.

float compass3_read_temp ( compass3_t *ctx );

• compass3_check_int Function checks interrupt occurence.

uint8_t compass3_check_int ( compass3_t *ctx );

Application Init

Initalizes I2C driver and Click driver, performs check, applies default setup and writes an initial log.

void application_init ( void )
{
    log_cfg_t log_cfg;
    compass3_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_printf( &logger, "---- Application Init ----\r\n" );

    //  Click initialization.

    compass3_cfg_setup( &cfg );
    COMPASS3_MAP_MIKROBUS( cfg, MIKROBUS_1 );
    compass3_init( &compass3, &cfg );
    Delay_ms ( 100 );
    
    compass3_generic_read( &compass3, COMPASS3_DEVICE_ID, &test_val, 1 );

    if ( test_val == COMPASS3_DEVICE_ID_NUM )
    {
        log_printf( &logger, "--------------------\r\n" );
        log_printf( &logger, "   Compass 3 Click  \r\n" );
        log_printf( &logger, "--------------------\r\n" );
    }
    else
    {
        log_printf( &logger, "   Fatal error!!!   \r\n" );
        for ( ; ; );
    }

    compass3_default_cfg ( &compass3 );
    Delay_ms ( 100 );
}

Application Task

This example demonstrates the use of Compass 3 Click board by measuring the magnetic field surrounding the device.

void application_task ( void )
{
    if ( compass3_check_int( &compass3 ) == COMPASS3_INTERRUPT )
    {
        compass3_full_measurement ( &compass3, &x_val, &y_val, &z_val );

        log_printf( &logger,"  X-axis : %2.f mG\r\n", x_val );
        log_printf( &logger,"  Y-axis : %2.f mG\r\n", y_val );
        log_printf( &logger,"  Z-axis : %2.f mG\r\n", z_val );

        Delay_ms ( 1000 );
        log_printf( &logger, "--------------------\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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