touchkey2

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Touchkey 2 Click

Touchkey 2 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 : MikroE Team
• Date : dec 2019.
• Type : UART type

Software Support

Example Description

This application is touch controller.

Example Libraries

• MikroSDK.Board
• MikroSDK.Log
• Click.Touchkey2

Example Key Functions

• touchkey2_cfg_setup Config Object Initialization function.

void touchkey2_cfg_setup ( touchkey2_cfg_t *cfg );

• touchkey2_init Initialization function.

err_t touchkey2_init ( touchkey2_t *ctx, touchkey2_cfg_t *cfg );

• touchkey2_default_cfg Click Default Configuration function.

void touchkey2_default_cfg ( touchkey2_t *ctx );

• touchkey2_set_reset_pin Set reset pin function.

void touchkey2_set_reset_pin ( touchkey2_t *ctx );

• touchkey2_clear_reset_pin Clear reset pin function.

void touchkey2_clear_reset_pin ( touchkey2_t *ctx );

• touchkey2_target_reset Reset function.

void touchkey2_target_reset ( touchkey2_t *ctx );

Application Init

Initalizes device and makes an initial log.

void application_init ( void )
{
    log_cfg_t log_cfg;
    touchkey2_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.

    touchkey2_cfg_setup( &cfg );
    TOUCHKEY2_MAP_MIKROBUS( cfg, MIKROBUS_POSITION_TOUCHKEY2 );
    touchkey2_init( &touchkey2, &cfg );
}

Application Task

Checks if new data byte have received in rx buffer (ready for reading), and if ready than reads one byte from rx buffer, that show if and what key is pressed.

void application_task ( void )
{
    char tmp;

    tmp = touchkey2_generic_single_read( &touchkey2 );
    
    if( tmp == 0x00 )
    {
        log_printf( &logger, "   Key released   %c\r\n" );
        log_printf( &logger, "------------------- \r\n" );
    }
    else if( tmp == 0x01 )
    {
        log_printf( &logger, "   Key A pressed %c\r\n" );
        log_printf( &logger, "------------------- \r\n" );
    }
    else if( tmp == 0x02 )
    {
        log_printf( &logger, "   Key B pressed %c\r\n" );
        log_printf( &logger, "------------------- \r\n" );
    }
    else if( tmp == 0x04 )
    {
        log_printf( &logger, "   Key C pressed %c\r\n" );
        log_printf( &logger, "------------------- \r\n" );
    }
    else if( tmp == 0x08 )
    {
        log_printf( &logger, "   Key D pressed \r\n" );
        log_printf( &logger, "------------------- \r\n" );
    }
    else
    {
        log_printf( &logger, "   Error!!!   " );
        touchkey2_target_reset( &touchkey2 );
    }
}

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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