proximity20

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Proximity 20 Click

Proximity 20 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 : Apr 2024.
• Type : I2C type

Software Support

Example Description

This example demonstrates the use of Proximity 20 Click board by reading and displaying the proximity data on the USB UART.

Example Libraries

• MikroSDK.Board
• MikroSDK.Log
• Click.Proximity20

Example Key Functions

• proximity20_cfg_setup Config Object Initialization function.

void proximity20_cfg_setup ( proximity20_cfg_t *cfg );

• proximity20_init Initialization function.

err_t proximity20_init ( proximity20_t *ctx, proximity20_cfg_t *cfg );

• proximity20_default_cfg Click Default Configuration function.

err_t proximity20_default_cfg ( proximity20_t *ctx );

• proximity20_read_proximity This function reads the proximity data from U2 and U3 sensors.

err_t proximity20_read_proximity ( proximity20_t *ctx, uint16_t *ps_data_u2, uint16_t *ps_data_u3 );

• proximity20_set_device_address This function sets the device slave address.

err_t proximity20_set_device_address ( proximity20_t *ctx, uint8_t dev_addr );

• proximity20_enable_device This function enables the device by setting the EN pin to high logic state.

void proximity20_enable_device ( proximity20_t *ctx );

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. */
    proximity20_cfg_t proximity20_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.
    proximity20_cfg_setup( &proximity20_cfg );
    PROXIMITY20_MAP_MIKROBUS( proximity20_cfg, MIKROBUS_1 );
    if ( I2C_MASTER_ERROR == proximity20_init( &proximity20, &proximity20_cfg ) ) 
    {
        log_error( &logger, " Communication init." );
        for ( ; ; );
    }
    
    if ( PROXIMITY20_ERROR == proximity20_default_cfg ( &proximity20 ) )
    {
        log_error( &logger, " Default configuration." );
        for ( ; ; );
    }
    
    log_info( &logger, " Application Task " );
}

Application Task

Reads the proximity data from 2 sensors and displays the results on the USB UART every 200ms. The higher the proximity value, the closer the detected object.

void application_task ( void )
{
    uint16_t ps_data_u2 = 0;
    uint16_t ps_data_u3 = 0;
    if ( PROXIMITY20_OK == proximity20_read_proximity ( &proximity20, &ps_data_u2, &ps_data_u3 ) )
    {
        log_printf ( &logger, " PS data [U2]: %u\r\n", ps_data_u2 );
        log_printf ( &logger, " PS data [U3]: %u\r\n\n", ps_data_u3 );
        Delay_ms ( 200 );
    }
}

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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