button2  2.1.0.0
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Button 2 Click

Button 2 Click is a compact add-on board designed for simple and efficient tactile input detection. This board features the TL3215AF160BQ, a TL3215 series of tactile switches from E-Switch, featuring high reliability and precise operation. The switch has a 2mm actuator, 160gf actuation force, silver contact material, and a lifespan of 1,000,000 cycles, while the integrated blue LED provides visual feedback. The board supports the new Click Snap feature, allowing easy detachment of the sensor area for flexible use.

Click Product page


Click library

  • Author : Stefan Filipovic
  • Date : Jun 2024.
  • Type : GPIO type

Software Support

We provide a library for the Button 2 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 Button 2 Click driver.

Standard key functions :

Example key functions :

Example Description

This example demonstrates the use of Button 2 Click board by toggling the button LED and switch state on button press.

The demo application is composed of two sections :

Application Init

Initializes the driver and logger.

void application_init ( void )
{
log_cfg_t log_cfg;
button2_cfg_t button2_cfg;
LOG_MAP_USB_UART( log_cfg );
log_init( &logger, &log_cfg );
log_info( &logger, " Application Init " );
// Click initialization.
button2_cfg_setup( &button2_cfg );
BUTTON2_MAP_MIKROBUS( button2_cfg, MIKROBUS_1 );
if ( DIGITAL_OUT_UNSUPPORTED_PIN == button2_init( &button2, &button2_cfg ) )
{
log_error( &logger, " Communication init." );
for ( ; ; );
}
log_info( &logger, " Application Task " );
log_printf ( &logger, " Press button to change switch state\r\n\n" );
log_printf ( &logger, " SWITCH OFF\r\n\n" );
}

Application Task

Toggles the button LED and switch state on button press and displays the state on the USB UART.

void application_task ( void )
{
static uint8_t switch_state = BUTTON2_SWITCH_OFF;
{
button2_toggle_led ( &button2 );
switch_state ^= BUTTON2_SWITCH_ON;
if ( BUTTON2_SWITCH_ON == switch_state )
{
log_printf ( &logger, " SWITCH ON\r\n\n" );
}
else
{
log_printf ( &logger, " SWITCH OFF\r\n\n" );
}
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.Button2

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.


BUTTON2_SWITCH_OFF
#define BUTTON2_SWITCH_OFF
Button 2 switch state setting.
Definition: button2.h:72
button2_cfg_t
Button 2 Click configuration object.
Definition: button2.h:122
button2_init
err_t button2_init(button2_t *ctx, button2_cfg_t *cfg)
Button 2 initialization function.
button2_t
Button 2 Click context object.
Definition: button2.h:110
button2_toggle_led
void button2_toggle_led(button2_t *ctx)
Button 2 toggle led function.
BUTTON2_BUTTON_PRESSED
#define BUTTON2_BUTTON_PRESSED
Button 2 button state setting.
Definition: button2.h:79
button2_enable_led
void button2_enable_led(button2_t *ctx)
Button 2 enable led function.
button2_cfg_setup
void button2_cfg_setup(button2_cfg_t *cfg)
Button 2 configuration object setup function.
application_task
void application_task(void)
Definition: main.c:61
BUTTON2_SWITCH_ON
#define BUTTON2_SWITCH_ON
Definition: button2.h:73
BUTTON2_MAP_MIKROBUS
#define BUTTON2_MAP_MIKROBUS(cfg, mikrobus)
MikroBUS pin mapping.
Definition: button2.h:98
application_init
void application_init(void)
Definition: main.c:29
button2_get_int_pin
uint8_t button2_get_int_pin(button2_t *ctx)
Button 2 get int pin function.