captouch  2.0.0.0
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Cap Touch click

Cap Touch click is a capacitive touch sensing button, integrated on a click board. It can be activated by touch.

click Product page


Click library

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

Software Support

We provide a library for the CapTouch 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 CapTouch Click driver.

Standard key functions :

  • Config Object Initialization function.

    void captouch_cfg_setup ( captouch_cfg_t *cfg );

  • Initialization function.

    CAPTOUCH_RETVAL captouch_init ( captouch_t *ctx, captouch_cfg_t *cfg );

  • Click Default Configuration function.

    void captouch_default_cfg ( captouch_t *ctx );

Example key functions :

Examples Description

Demo application is used to shows basic controls Cap Touch click.

The demo application is composed of two sections :

Application Init

Configuring clicks and log objects. Settings the click in the default configuration.

void application_init ( void )
{
log_cfg_t log_cfg;
// Logger initialization.
log_cfg.level = LOG_LEVEL_DEBUG;
LOG_MAP_USB_UART( log_cfg );
log_init( &logger, &log_cfg );
log_info( &logger, "---- Application Init ----" );
// Click initialization.
CAPTOUCH_MAP_MIKROBUS( cfg, MIKROBUS_1 );
captouch_init( &captouch, &cfg );
captouch_default_cfg( &captouch );
}

Application Task

Checks for a new touch event. If so, prints the message to USBUART.

void application_task ( void )
{
uint8_t touch;
// Task implementation.
touch = captouch_get_touch( &captouch );
if ( touch != 0 )
{
log_printf( &logger, "-- New Touch\r\n" );
Delay_ms( 200 );
}
}

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.CapTouch

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.


CAPTOUCH_MAP_MIKROBUS
#define CAPTOUCH_MAP_MIKROBUS(cfg, mikrobus)
Definition: captouch.h:51
application_task
void application_task(void)
Definition: main.c:53
captouch_cfg_t
Click configuration structure definition.
Definition: captouch.h:99
captouch_default_cfg
void captouch_default_cfg(captouch_t *ctx)
Click Default Configuration function.
application_init
void application_init(void)
Definition: main.c:32
captouch_init
CAPTOUCH_RETVAL captouch_init(captouch_t *ctx, captouch_cfg_t *cfg)
Initialization function.
captouch_cfg_setup
void captouch_cfg_setup(captouch_cfg_t *cfg)
Config Object Initialization function.
captouch_get_touch
uint8_t captouch_get_touch(captouch_t *ctx)
Get touch state.