// Define Connections to 74HC165

int latchPin = 15; // PL pin 1
int dataPin = 17; // Q7 pin 7
int clockPin = 16; // CP pin 2
int a[8];
byte incoming ;
void turn_on() {
    // // Step 1: Sample
    // digitalWrite(latchPin, LOW);
    // digitalWrite(latchPin, HIGH);
    // // Step 2: Shift
    // // Serial.print("Bits: ");
    // for (byte i = 0; i < 8; i++) {
    //   // byte bit = digitalRead(dataPin);
    //   a[i] = digitalRead(dataPin);
    //   Serial.print(a[i]);
    //   digitalWrite(clockPin, HIGH); // Shift out the next bit
    //   digitalWrite(clockPin, LOW);
    // }
    // Serial.println("");
    digitalWrite(latchPin, LOW);
    digitalWrite(latchPin, HIGH);
    incoming = shiftIn(dataPin, clockPin, MSBFIRST);  //MSBFIRST  //LSBFIRST
      Serial.println(incoming);
  }

void setup()
{

  // Setup Serial Monitor
  Serial.begin(115200);

  // Setup 74HC165 connections
  pinMode(latchPin, OUTPUT);
  pinMode(clockPin, OUTPUT);
  pinMode(dataPin, INPUT);

  digitalWrite(latchPin, HIGH);
  
}

void loop()
{

  // Write pulse to load pin
  // digitalWrite(latchPin, LOW);
  // digitalWrite(latchPin, HIGH);

  // Get data from 74HC165

  // digitalWrite(clockIn, HIGH); //這一行不要不然會錯
  // byte incoming = shiftIn(dataPin, clockPin, MSBFIRST);  //MSBFIRST  //LSBFIRST
turn_on();
  // Print to serial monitor
  Serial.print("Pin States:\r\n");
  // Serial.println(incoming, BIN);
  Serial.println(incoming);
  delay(500);

  // // Step 1: Sample
  // digitalWrite(latchPin, LOW);
  // digitalWrite(latchPin, HIGH);

  // // Step 2: Shift
  // Serial.print("Bits: ");
  // for (int i = 0; i < 8; i++) {
  //   int bit = digitalRead(dataPin);
  //   a[i]=digitalRead(dataPin);
  //     //Serial.print(a[i]);
    
    
  //   digitalWrite(clockPin, HIGH); // Shift out the next bit
  //   digitalWrite(clockPin, LOW);
  // }

  //  Serial.print(a[0]);
  //  Serial.print(a[1]);
  //  Serial.print(a[2]);
  //  Serial.print(a[3]);
  //  Serial.print(a[4]);
  //  Serial.print(a[5]);
  //  Serial.print(a[6]);
  //  Serial.print(a[7]);
  //  Serial.println("");

  // delay(200);


}