sketch.ino

diagram.json

#include <avr/io.h>
#include <util/delay.h>

int main()
{
  // declarations
  uint8_t mask = 0x08; // 0b00001000

  // set all pins of port L as inputs
  DDRL = 0x00;

  // deactivate all pullup resistors on port L
  PORTL = 0x00;

  // set pb7 as output (built-in led)
  DDRB = 0x80;

  while(1)
  {
    if ((PINL & mask) != 0x00)
    {
      // switch built-in led on (pb7)
      PORTB = 0x80;
    }
    else
    {
      PORTB = 0x00;
    }
  }
}