camera cram

const int x[] = { 1,2,3,4 };
const int y[] = { 5,6,7,8 };
int buttonPressed[2] = {-1,-1}; 

void setup() {
  Serial.begin(9600);              // set up Serial library at 9600 bps
  Serial.println("test!"); 
  
  for (int idx_x = 0; idx_x < 4; idx_x++) {
    pinMode(idx_x, INPUT);
  } 
  for (int idx_y = 0; idx_y < 4; idx_y++) {
    pinMode(idx_y, INPUT_PULLUP);
  }
}

void loop() {
  for (int idx_x = 0; idx_x < 4; idx_x++) {
    pinMode(idx_x, OUTPUT);
    for (int idx_y = 0; idx_y < 4; idx_y++) {
      if(digitalRead(idx_y) == LOW) {
        buttonPressed[0] = idx_x;
        buttonPressed[1] = idx_y;
      }
    }
    pinMode(idx_x, INPUT);
  }   
}