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mikroSDK Library

Touchpad Click

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Author: MIKROE

Last Updated: 2024-10-31

Package Version: 2.1.0.16

mikroSDK Library: 2.0.0.0

Category: Capacitive

Downloaded: 262 times

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License: MIT license  

Touchpad Click is a capacitive touch input device driven by Microchip’s low-powered MTCH6102 controller.

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  • mikroSDK Library 1.0.0.0
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mikroSDK Library Blog


Touchpad Click

Touchpad Click is a capacitive touch input device driven by Microchip’s low-powered MTCH6102 controller.

touchpad_click.png

Click Product page


Click library

  • Author : Katarina Perendic
  • Date : okt 2019.
  • Type : I2C type

Software Support

We provide a library for the Touchpad 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 Touchpad Click driver.

Standard key functions :

  • Config Object Initialization function.

    void touchpad_cfg_setup ( touchpad_cfg_t *cfg );

  • Initialization function.

    TOUCHPAD_RETVAL touchpad_init ( touchpad_t ctx, touchpad_cfg_t cfg );

  • Click Default Configuration function.

    void touchpad_default_cfg ( touchpad_t *ctx );

Example key functions :

  • Get touch coordinate

    void touchpad_get_touch_coordinate ( touchpad_t ctx, touchpad_cord_t cord );

  • Get event state

    uint8_t touchpad_get_event_state ( touchpad_t *ctx );

  • Gesture type

    uint8_t touchpad_get_gesture_type ( touchpad_t *ctx );

Examples Description

Demo application shows reading of current event:

  • touch event (Touch Coordinates)
  • Gesture event (gesture type)

The demo application is composed of two sections :

Application Init

Configuring clicks and log objects. Setting the Click in the default configuration.

void application_init ( void )
{
    log_cfg_t log_cfg;
    touchpad_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.

    touchpad_cfg_setup( &cfg );
    TOUCHPAD_MAP_MIKROBUS( cfg, MIKROBUS_1 );
    touchpad_init( &touchpad, &cfg );

    touchpad_default_cfg( &touchpad );

    log_info( &logger, "---- Waiting for a new touch or gesure event ----" );
    Delay_ms ( 500 );
} 

Application Task

Reads every touch and gesture and this data logs to USBUART.

void application_task ( void )
{
    uint8_t state;
    uint8_t gesture;
    touchpad_cord_t cord;

    //  Task implementation.

    Delay_ms ( 50 );
    state = touchpad_get_event_state( &touchpad );
    if ( state == TOUCHPAD_EVENT_TOUCH )
    {
        touchpad_get_touch_coordinate( &touchpad, &cord );

        log_printf( &logger, "\r\n>> Touch coordinate <<" );
        log_printf( &logger, "\r\n>> ........... <<\r\n" );
        log_printf( &logger, "** X cord: %d \r\n** Y cord: %d \r\n", cord.x, cord.y );
        log_printf( &logger, ">> ........... <<\r\n" );
        Delay_ms ( 50 );
    }
    else if ( state == TOUCHPAD_EVENT_GESTURE )
    {
        gesture = touchpad_get_gesture_type( &touchpad );
        switch( gesture )
        {
            case TOUCHPAD_GS_CLICK_AND_HOLD :
            {
                log_printf( &logger, "**Gesture type: Click and Hold\r\n" );
                break;
            }
            case TOUCHPAD_GS_DOUBLE_CLICK :
            {
                log_printf( &logger, "\r\n**Gesture type: Double Click\r\n" );
                break;
            }
            case TOUCHPAD_GS_SINGLE_CLICK :
            {
                log_printf( &logger, "\r\n**Gesture type: Single Click\r\n" );
                break;
            }
            case TOUCHPAD_GS_DOWN_SWIPE :
            {
                log_printf( &logger, "\r\n**Gesture type: Down Swipe\r\n" );
                break;
            }
            case TOUCHPAD_GS_DOWN_SWIPE_AND_HOLD :
            {
                log_printf( &logger, "\r\n**Gesture type: Down Swipe and Hold\r\n" );
                break;
            }
            case TOUCHPAD_GS_RIGHT_SWIPE :
            {
                log_printf( &logger, "\r\n**Gesture type: Right Swipe\r\n" );
                break;
            }
            case TOUCHPAD_GS_RIGHT_SWIPE_AND_HOLD :
            {
                log_printf( &logger, "\r\n**Gesture type: Right Swipe and Hold\r\n" );
                break;
            }
            case TOUCHPAD_GS_UP_SWIPE :
            {
                log_printf( &logger, "\r\n**Gesture type: Up Swipe\r\n" );
                break;
            }
            case TOUCHPAD_GS_UP_SWIPE_AND_HOLD :
            {
                log_printf( &logger, "\r\n**Gesture type: Up Swipe and Hold\r\n" );
                break;
            }
            case TOUCHPAD_GS_LEFT_SWIPE :
            {
                log_printf( &logger, "\r\n**Gesture type: Left Swipe\r\n" );
                break;
            }
            case TOUCHPAD_GS_LEFT_SWIPE_AND_HOLD :
            {
                log_printf( &logger, "\r\n**Gesture type: Left Swipe and Hold\r\n" );
                break;
            }
       }
    }
}

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.Touchpad

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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