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mikroSDK Library

Cap Touch 2 Click

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Author: MIKROE

Last Updated: 2024-10-31

Package Version: 2.1.0.19

mikroSDK Library: 2.0.0.0

Category: Capacitive

Downloaded: 259 times

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License: MIT license  

Cap Touch 2 Click is a capacitive touch sensing Click board™ which features the CAP1166, an advanced touch/proximity sensor IC, packed with a range of different touch/proximity functionalities, allowing development of robust and aesthetically pleasing touch interfaces.

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  • mikroSDK Library 1.0.0.0
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mikroSDK Library Blog


Cap Touch 2 Click

Cap Touch 2 Click is a capacitive touch sensing Click board which features the CAP1166, an advanced touch/proximity sensor IC, packed with a range of different touch/proximity functionalities, allowing development of robust and aesthetically pleasing touch interfaces.

captouch2_click.png

Click Product page


Click library

  • Author : Katarina Perendic
  • Date : okt 2019.
  • Type : SPI type

Software Support

We provide a library for the CapTouch2 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 form compilers IDE(recommended way), or downloaded from our LibStock, or found on mikroE github account.

Library Description

This library contains API for CapTouch2 Click driver.

Standard key functions :

  • Config Object Initialization function.

    void captouch2_cfg_setup ( captouch2_cfg_t *cfg );

  • Initialization function.

    CAPTOUCH2_RETVAL captouch2_init ( captouch2_t ctx, captouch2_cfg_t cfg );

  • Click Default Configuration function.

    void captouch2_default_cfg ( captouch2_t *ctx );

Example key functions :

  • Touch Detect function

    void captouch2_detect_touch( captouch2_t ctx, uint8_t in_sens );

  • Interrupt Check function

    uint8_t captouch2_check_interrupt( captouch2_t *ctx );

  • Reset function

    void captouch2_reset( captouch2_t *ctx );

Examples Description

The demo application shows the button reading and checking.

The demo application is composed of two sections :

Application Init

Configuring clicks and log objects. Reset device and settings the Click in the default configuration.

void application_init ( void )
{
    log_cfg_t log_cfg;
    captouch2_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_info( &logger, "---- Application Init ----" );

    //  Click initialization.

    captouch2_cfg_setup( &cfg );
    CAPTOUCH2_MAP_MIKROBUS( cfg, MIKROBUS_1 );
    captouch2_init( &captouch2, &cfg );

    captouch2_reset( &captouch2 );
    Delay_ms ( 200 );
    captouch2_default_cfg( &captouch2 );
    Delay_ms ( 100 );
    log_info( &logger, ">> Cap Touch 2 is initialized " );
}

Application Task

Calls function to check touch detection (is interrupt occured) and shows message on USB UART on which input touch is detected or on which input touch is released. Also turns on LED on which linked input interrupt occured.

void application_task ( void )
{
    uint8_t cnt;
    uint8_t sensor_results[ 6 ];

    captouch2_detect_touch( &captouch2, &sensor_results[ 0 ] );
    for ( cnt = 0; cnt < 6; cnt++ )
    {
        if ( sensor_results[ cnt ] == 1 )
        {
            log_printf( &logger, "Input %d is touchedr\r\n", cnt + 1 );
        }
        else if ( sensor_results[ cnt ] == 2 )
        {
            log_printf( &logger, "Input %d is released\r\n", cnt + 1 );
        }
    }
}

The full application code, and ready to use projects can be installed directly form compilers IDE(recommneded) or found on LibStock page or mikroE GitHub accaunt.

Other mikroE Libraries used in the example:

  • MikroSDK.Board
  • MikroSDK.Log
  • Click.CapTouch2

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. The terminal available in all Mikroelektronika compilers, or any other terminal application of your choice, can be used to read the message.


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