Library Description

The library contains button check functions and LED control.

Key functions:

• void buttonpower_set_led_state ( uint8_t led_state ) - Led control
• uint8_t buttonpower_get_button_state ( void ) - Get button state

Examples description

The application is composed of three sections :

• System Initialization - Initializes LOG, PWM pin as OUTPUT and INT pin as input
• Application Initialization - Initializes GPIO driver init
• Application Task - Checks if the button is pressed, if yes the led light flashes and the message is written on the usb uart

void applicationTask()
{
    uint8_t cnt;
    uint8_t button_state;
    
    button_state = buttonpower_get_button_state( );
    if ( button_state == BUTTONPOWER_BUTTON_IS_PRESSED )
    {
        mikrobus_logWrite( " >> Button is pressed ", _LOG_LINE );
        
        for ( cnt = 0; cnt < 5; cnt++ )
        {
            buttonpower_set_led_state( BUTTONPOWER_LED_OFF );
            Delay_ms( 100 );
            buttonpower_set_led_state( BUTTONPOWER_LED_ON );
            Delay_ms( 100 );
        }
    }
}

Other mikroE Libraries used in the example:

• UART

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.