CLIL - Praktická cvičení
exercise with MCU
Microcontroller - A Beginners Guide
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IDE:
WinAVR -
IDE: AVR Studio -
IDE: CodeVisionAVR
MCU WinAVR Install
Understanding Button Debouncing
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#include <avr/io.h>
int main(void)
{
DDRB |= 1 << PINB0; //Set Direction for output on PINB0
PORTB ^= 1 << PINB0; //Toggling only Pin 0 on port b
DDRB |= 1 << PINB2; //Set Direction for Output on PINB2
DDRB &= ~(1 << PINB1); //Data Direction Register input PINB1
PORTB |= 1 << PINB1; //Set PINB1 to a high reading
int Pressed = 0; //Initialize/Declare the Pressed variable
while (1)
{
if (bit_is_clear(PINB, 1)) //Check is the button is pressed
{
//Make sure that the button was released first
if (Pressed == 0)
{
PORTB ^= 1 << PINB0; //Toggle LED in pin 0
PORTB ^= 1 << PINB2; //Toggle LED on pin 2
Pressed = 1;
}
}
else
{
//This code executes when the button is not pressed.
Pressed = 0;
}
}
} |
exercise with NXT
maybe: