Proximity 17 Click

Proximity 17 Click is a compact add-on board that contains a close-range proximity sensing solution. This board features the TMD2635, a miniature proximity sensor module from ams AG. The TMD2635 features advanced proximity measurement in a tiny and thin optical land grid array module that incorporates a 940nm infrared vertical-cavity surface-emitting laser (IR VCSEL) factory calibrated for IR proximity response. It also offers advanced crosstalk noise cancellation through a wide range of offset adjustments through a digital fast-mode I2C interface to compensate for unwanted IR energy reflection at the sensor. This Click board™ is suitable for consumer and industrial applications.

Click Product page

Click library

• Author : Stefan Filipovic
• Date : Mar 2022.
• Type : I2C type

Software Support

We provide a library for the Proximity 17 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 Proximity 17 Click driver.

Standard key functions :

• proximity17_cfg_setup Config Object Initialization function.

  void proximity17_cfg_setup ( proximity17_cfg_t *cfg );

• proximity17_init Initialization function.

  err_t proximity17_init ( proximity17_t *ctx, proximity17_cfg_t *cfg );

• proximity17_default_cfg Click Default Configuration function.

  err_t proximity17_default_cfg ( proximity17_t *ctx );

Example key functions :

• proximity17_get_int_pin This function returns the INT pin logic state.

  uint8_t proximity17_get_int_pin ( proximity17_t *ctx );

• proximity17_read_proximity This function reads the raw proximity data. The higher the value, the closer the detected object is.

  err_t proximity17_read_proximity ( proximity17_t *ctx, uint16_t *prox_data );

• proximity17_soft_reset This function executes the defice software reset command.

  err_t proximity17_soft_reset ( proximity17_t *ctx );

Example Description

This example demonstrates the use of Proximity 17 Click board by reading and displaying the proximity data on the USB UART.

The demo application is composed of two sections :

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. */
    proximity17_cfg_t proximity17_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.
    proximity17_cfg_setup( &proximity17_cfg );
    PROXIMITY17_MAP_MIKROBUS( proximity17_cfg, MIKROBUS_1 );
    if ( I2C_MASTER_ERROR == proximity17_init( &proximity17, &proximity17_cfg ) ) 
    {
        log_error( &logger, " Communication init." );
        for ( ; ; );
    }

    if ( PROXIMITY17_ERROR == proximity17_default_cfg ( &proximity17 ) )
    {
        log_error( &logger, " Default configuration." );
        for ( ; ; );
    }

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

Application Task

Reads the proximity data and displays it on the USB UART approximately once per second. The higher the proximity value, the closer the detected object is.

void application_task ( void )
{
    uint16_t proximity;
    if ( PROXIMITY17_OK == proximity17_read_proximity ( &proximity17, &proximity ) )
    {
        log_printf ( &logger, " Proximity: %u\r\n\n", proximity );
        Delay_ms ( 1000 );
    }
}

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.Proximity17

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.