CLIL - Praktická cvičení

exercise with MCU

Microcontroller - A Beginners Guide

• 
  VYV50 Vývojová deska ATMEL (ATmega16) v2
• 
  WinAVR
• 
  AVR Studio
• 
  CodeVisionAVR

Understanding Button Debouncing

original link

#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

• Free NXT Lego MindStorms NXT-G code tutorials - Robots in abundance!

• Soccer Tactics 4 - Kick the Ball

maybe: