[Arduino source code for KC868-A256]-02 INPUT_256

Code:
/*

 * KC868-256 INPUT CODE

  74HC165 Shift register input example

*/

const byte latchPin = 33;        

const byte clockPin = 32;       

const byte dataPin = 15;        



 

const int numBits = 8;   

 

void setup() {

  Serial.begin(115200);

  pinMode(dataPin, INPUT);

  pinMode(clockPin, OUTPUT);

  pinMode(latchPin, OUTPUT);

}

 

void loop() {



  digitalWrite(latchPin, LOW);

  digitalWrite(latchPin, HIGH);

  for(int j =0;j<=255;j+=8)

  {

    for (int i = numBits; i >0; i--) {

    int bit = digitalRead(dataPin);

    if (bit == LOW) {

      Serial.printf("Input %d is DOWN\n",i+j);

    } 

    digitalWrite(clockPin, HIGH); 

    digitalWrite(clockPin, LOW);

  }

  }

 }