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Author: MIKROE
Last Updated: 2024-10-31
Package Version: 2.1.0.13
mikroSDK Library: 2.0.0.0
Category: Pushbutton/Switches
Downloaded: 119 times
Not followed.
License: MIT license
Button Y Click is a Click board™ equipped with the tactile switch, sometimes referred to as a pushbutton. A pushbutton is a component that is used very often in various designs, allowing the user to interact with the application. Although it sounds simple, a button needs to comply with a range of application requirements. It needs to have a very good mechanical endurance while retaining its specifications, a predictable bouncing time, a very low ON resistance, very high OFF resistance, and it needs to fulfill aesthetical requirements.
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Button Y Click is a Click board™ equipped with the tactile switch, sometimes referred to as a pushbutton. A pushbutton is a component that is used very often in various designs, allowing the user to interact with the application. Although it sounds simple, a button needs to comply with a range of application requirements. It needs to have a very good mechanical endurance while retaining its specifications, a predictable bouncing time, a very low ON resistance, very high OFF resistance, and it needs to fulfill aesthetical requirements.
We provide a library for the ButtonY 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.
This library contains API for ButtonY Click driver.
buttony_cfg_setup
Config Object Initialization function.
void buttony_cfg_setup ( buttony_cfg_t *cfg );
buttony_init
Initialization function.
err_t buttony_init ( buttony_t *ctx, buttony_cfg_t *cfg );
buttony_pwm_stop
This function stops the PWM moudle output.
err_t buttony_pwm_stop ( buttony_t *ctx );
buttony_pwm_start
This function starts the PWM moudle output.
err_t buttony_pwm_start ( buttony_t *ctx );
buttony_get_button_state
This function reads the digital signal from the INT pin which tells us whether the button has been pressed or not.
uint8_t buttony_get_button_state ( buttony_t *ctx );
This library contains API for Button Y Click driver. One library is used for every single one of them. They are simple touch detectors that send a pressed/released signal and receive a PWM output which controls the backlight on the button.
The demo application is composed of two sections :
This function initializes and configures the logger and Click modules.
void application_init ( void )
{
log_cfg_t log_cfg; /**< Logger config object. */
buttony_cfg_t buttony_cfg; /**< Click config object. */
/**
* 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.
buttony_cfg_setup( &buttony_cfg );
BUTTONY_MAP_MIKROBUS( buttony_cfg, MIKROBUS_1 );
err_t init_flag = buttony_init( &buttony, &buttony_cfg );
if ( PWM_ERROR == init_flag )
{
log_error( &logger, " Application Init Error. " );
log_info( &logger, " Please, run program again... " );
for ( ; ; );
}
Delay_ms ( 500 );
buttony_set_duty_cycle ( &buttony, 0.0 );
buttony_pwm_start( &buttony );
log_info( &logger, " Application Task " );
}
This example first increases the backlight on the button and then decreases the intensity of backlight. When the button is pressed, reports the event in the console using UART communication.
void application_task ( void )
{
static float duty_cycle;
static uint8_t button_state;
static uint8_t button_state_old;
button_state = buttony_get_button_state( &buttony );
if ( button_state && ( button_state != button_state_old ) )
{
log_printf( &logger, " <-- Button pressed --> \r\n" );
for ( uint8_t n_cnt = 1; n_cnt <= 100; n_cnt++ )
{
duty_cycle = ( float ) n_cnt ;
duty_cycle /= 100;
buttony_set_duty_cycle( &buttony, duty_cycle );
Delay_ms ( 10 );
}
button_state_old = button_state;
}
else if ( !button_state && ( button_state != button_state_old ) )
{
for ( uint8_t n_cnt = 100; n_cnt > 0; n_cnt-- )
{
duty_cycle = ( float ) n_cnt ;
duty_cycle /= 100;
buttony_set_duty_cycle( &buttony, duty_cycle );
Delay_ms ( 10 );
}
button_state_old = button_state;
}
}
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:
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.