radar

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Radar Click

Radar 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 : UART type

Software Support

Example Description

This example demonstrates the use of Radar Click board by reading and parsing events as well as the module internal temperature.

Example Libraries

• MikroSDK.Board
• MikroSDK.Log
• Click.Radar

Example Key Functions

• radar_cfg_setup Config Object Initialization function.

void radar_cfg_setup ( radar_cfg_t *cfg );

• radar_init Initialization function.

err_t radar_init ( radar_t *ctx, radar_cfg_t *cfg );

• radar_default_cfg Click Default Configuration function.

err_t radar_default_cfg ( radar_t *ctx );

• radar_get_event This function waits for an IN/OUT event or ACK command response.

err_t radar_get_event ( radar_t *ctx, uint8_t *evt_id, uint8_t *payload, uint8_t *payload_size );

• radar_get_temperature This function reads the chip internal temperature.

err_t radar_get_temperature ( radar_t *ctx, float *temperature );

• radar_set_detection_range This function sets the min and max presence detection values.

err_t radar_set_detection_range ( radar_t *ctx, float min, float max );

Application Init

Initializes the driver and logger and performs the Click default configuration.

void application_init ( void )
{
    log_cfg_t log_cfg;  /**< Logger config object. */
    radar_cfg_t radar_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.
    radar_cfg_setup( &radar_cfg );
    RADAR_MAP_MIKROBUS( radar_cfg, MIKROBUS_POSITION_RADAR );
    if ( UART_ERROR == radar_init( &radar, &radar_cfg ) ) 
    {
        log_error( &logger, " Communication init." );
        for ( ; ; );
    }
    
    if ( RADAR_ERROR == radar_default_cfg ( &radar ) )
    {
        log_error( &logger, " Default configuration." );
        for ( ; ; );
    }
    
    log_info( &logger, " Application Task " );
}

Application Task

Waits for the detection event and then displays on the USB UART the distance of detected object, accuracy, elapsed time since last reset, and the module internal temperature.

void application_task ( void )
{
    uint8_t evt_id, evt_payload_size, evt_payload[ 16 ];
    if ( RADAR_OK == radar_get_event ( &radar, &evt_id, evt_payload, &evt_payload_size ) )
    {
        if ( RADAR_CMD_ID_DETECT_IN_EVT == evt_id )
        {
            log_printf( &logger, " EVENT: IN\r\n" );
            radar_float_bytes_t distance;
            memcpy ( distance.b_data, &evt_payload[ 8 ], 4 );
            radar_float_ieee_to_mchip ( &distance.f_data );
            log_printf( &logger, " Target distance: %.3f m\r\n", distance.f_data );
            memcpy ( distance.b_data, &evt_payload[ 12 ], 4 );
            radar_float_ieee_to_mchip ( &distance.f_data );
            log_printf( &logger, " Accuracy (+/-): %.3f m\r\n", distance.f_data );
        }
        else
        {
            log_printf( &logger, " EVENT: OUT\r\n" );
        }
        uint32_t evt_time = ( ( uint32_t ) evt_payload[ 3 ] << 24 ) | ( ( uint32_t ) evt_payload[ 2 ] << 16 ) | 
                            ( ( uint16_t ) evt_payload[ 1 ] << 8 ) | evt_payload[ 0 ];
        log_printf( &logger, " Elapsed time: %.2f s\r\n", evt_time / 1000.0 );
        float temperature;
        if ( RADAR_OK == radar_get_temperature ( &radar, &temperature ) )
        {
            log_printf( &logger, " Temperature: %.2f C\r\n\n", temperature );
        }
    }
}

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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