Proximity 12 Click

Proximity 12 Click is a compact add-on board that contains a high-performance light and proximity sensing solution. This board features the TMD3719, an optical sensor that integrates ambient light sensing, proximity detection, and flicker detection sensing from AMS-AG.

Click Product page

Click library

• Author : Stefan Filipovic
• Date : Jun 2021.
• Type : I2C type

Software Support

We provide a library for the Proximity12 Click as well as a demo application (example), developed using MikroElektronika compilers. The demo can run on all the main MikroElektronika development boards.

Package can be downloaded/installed directly from NECTO Studio Package Manager(recommended way), downloaded from our LibStock™ or found on Mikroe github account.

Library Description

This library contains API for Proximity12 Click driver.

Standard key functions :

• proximity12_cfg_setup Config Object Initialization function.

  void proximity12_cfg_setup ( proximity12_cfg_t *cfg );

• proximity12_init Initialization function.

  err_t proximity12_init ( proximity12_t *ctx, proximity12_cfg_t *cfg );

• proximity12_default_cfg Click Default Configuration function.

  err_t proximity12_default_cfg ( proximity12_t *ctx );

Example key functions :

• proximity12_read_proximity This function reads the raw proximity value measured by the Click board.

  err_t proximity12_read_proximity ( proximity12_t *ctx, uint16_t *prox_data );

• proximity12_read_als This function reads all als data measured by the Click board.

  err_t proximity12_read_als ( proximity12_t *ctx, proximity12_als_data_t *als );

• proximity12_set_led_isink This function sets the LEDs sink scaler and current values.

  err_t proximity12_set_led_isink ( proximity12_t *ctx, uint8_t scaler, uint8_t current );

Example Description

This function demonstrates the use of Proximity 12 Click board.

The demo application is composed of two sections :

Application Init

Initializes the driver and performs the Click default configuration.

void application_init ( void )
{
    log_cfg_t log_cfg;                  /**< Logger config object. */
    proximity12_cfg_t proximity12_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 );
    Delay_ms ( 100 );
    log_info( &logger, " Application Init " );

    // Click initialization.
    proximity12_cfg_setup( &proximity12_cfg );
    PROXIMITY12_MAP_MIKROBUS( proximity12_cfg, MIKROBUS_1 );
    err_t init_flag = proximity12_init( &proximity12, &proximity12_cfg );
    if ( I2C_MASTER_ERROR == init_flag ) 
    {
        log_error( &logger, " Application Init Error. " );
        log_info( &logger, " Please, run program again... " );

        for ( ; ; );
    }
    Delay_ms ( 100 );

    init_flag = proximity12_default_cfg ( &proximity12 );
    if ( PROXIMITY12_ERROR == init_flag ) 
    {
        log_error( &logger, " Default Cfg Error. " );
        log_info( &logger, " Please, run program again... " );

        for ( ; ; );
    }
    log_info( &logger, " Application Task " );
}

Application Task

Reads the proximity and ALS values and displays the results on the USB UART approximately every 100ms.

void application_task ( void )
{
    uint16_t prox_data = 0;
    proximity12_als_data_t als;
    err_t error_flag = proximity12_read_proximity ( &proximity12, &prox_data );
    error_flag |= proximity12_read_als ( &proximity12, &als );

    if ( PROXIMITY12_OK == error_flag )
    {
        log_printf( &logger, " - Proximity data -\r\n" );
        log_printf( &logger, " Proximity: %u\r\n", prox_data );
        log_printf( &logger, " - ALS data -\r\n" );
        log_printf( &logger, " Clear: %lu - Red: %lu - Green: %lu - Blue: %lu\r\n", als.clear,
                                                                                    als.red,
                                                                                    als.green, 
                                                                                    als.blue );

        log_printf( &logger, " Leakage: %lu - Wideband: %lu - IR1: %lu - IR2: %lu\r\n\r\n", als.leakage,
                                                                                            als.wideband,
                                                                                            als.ir1, 
                                                                                            als.ir2 );
    }
    Delay_ms ( 100 );
}

The full application code, and ready to use projects can be installed directly from NECTO Studio Package Manager(recommended way), downloaded from our LibStock™ or found on Mikroe github account.

Other Mikroe Libraries used in the example:

• MikroSDK.Board
• MikroSDK.Log
• Click.Proximity12

Additional notes and informations

Depending on the development board you are using, you may need USB UART Click, USB UART 2 Click or RS232 Click to connect to your PC, for development systems with no UART to USB interface available on the board. UART terminal is available in all MikroElektronika compilers.