Arduino 74HC595 Çıkışları tek tek ayarlayamıyorum

[Affansen]

74HC595 entegresini Arduino ile kullanıyorum. İnternetteki örneklere baktığım zaman örneklerde hep kayar led yapılmış. Kayar led uygulamaları başarıyla çalıştı ancak çıkışları tek tek kontrol edemedim.

Spoyler: Kullandığım Kayan Led kodu

int latchPin = 5;  // Latch pin of 74HC595 is connected to Digital pin 5
int clockPin = 6; // Clock pin of 74HC595 is connected to Digital pin 6
int dataPin = 4;  // Data pin of 74HC595 is connected to Digital pin 4

byte leds = 0;    // Variable to hold the pattern of which LEDs are currently turned on or off

/*
 * setup() - this function runs once when you turn your Arduino on
 * We initialize the serial connection with the computer
 */
void setup()
{
  // Set all the pins of 74HC595 as OUTPUT
  pinMode(latchPin, OUTPUT);
  pinMode(dataPin, OUTPUT); 
  pinMode(clockPin, OUTPUT);
}

/*
 * loop() - this function runs over and over again
 */
void loop()
{
  leds = 0; // Initially turns all the LEDs off, by giving the variable 'leds' the value 0
  updateShiftRegister();
  delay(500);
  for (int i = 0; i < 8; i++) // Turn all the LEDs ON one by one.
  {
    bitSet(leds, i);    // Set the bit that controls that LED in the variable 'leds'
    updateShiftRegister();
    delay(500);
  }
}

/*
 * updateShiftRegister() - This function sets the latchPin to low, then calls the Arduino function 'shiftOut' to shift out contents of variable 'leds' in the shift register before putting the 'latchPin' high again.
 */
void updateShiftRegister()
{
   digitalWrite(latchPin, LOW);
   shiftOut(dataPin, clockPin, LSBFIRST, leds);
   digitalWrite(latchPin, HIGH);
}

 

[mehmet.bey]

8-bit bilgi yolluyorsunuz. Her defasınında
bu bitleri birleştirip bir byte yollayacaksınız.

Basit bir örnek:

typedef struct {
   unsigned int d0:1;
   unsigned int d1:1;
   unsigned int d2:1;
   unsigned int d3:1;
   unsigned int d4:1;
   unsigned int d5:1;
   unsigned int d6:1;
   unsigned int d7:1;
} bit_a;

int main(void)
{
   bit_a bita_var;
   bita_var.d0 = 0b1;
   bita_var.d1 = 0b0;
   HC595_yaz(bita_var);
   return 0;
}