const int nPoints = 8;
int memArray[nPoints];
char phrase[30];

int letterPosition=0;
int val3;
int selector=0;

//char cnt=0;

void setup() {

  Serial.begin(115200);
  pinMode(2, OUTPUT); // sets the digital pin as output

  //function from Oscar's library, using pin8 to control reset of the OLED
  OLED_Init();

  //clear screen
  OLED_Clear();



}

void loop() {



  int val1 = analogRead(1); //proximetre
  //val1 = map(val1,0,1023,0,7); // map serve a comprimer le valeur du capteur dans valeur du coleur 




  int val2 = analogRead(2); //accelerometer X
  val2 = map(val2,0,1023,0,16); // accelerometer 1 value map serve a comprimer le valeur du capteur dans valeur du coleur 


  val3 = analogRead(3);  // accelerometer Y   // map it into the number of characters
  val3 = map(val3,0,1023,'A','A'+char(30));

  //OLED_Clear();  //clear the screen
  //pushArray();
  //memArray[nPoints-1] = val2;


detectSwitch();
showLetter(val3);


  setColor(255,0,0);
 // OLED_DrawSingleChar(letterPosition, 7, 15, char(val3));
 
   OLED_DrawText(letterPosition, 5, 2, phrase);
    delay (200);
   //detectLetter();
  
  
}


void detectLetter() {
  
  static boolean stateLetter = false;
  
  if (val3>0) {
   stateLetter = true; 
    
  } else {
   if (stateLetter == true) {
   OLED_Clear();
   stateLetter =false;
   } 
    
  }
}


/*void pushArray() {
  for (int i=0; i<nPoints-1; i++) {

    memArray[i] = memArray[i+1]; 
    //memArray[i+1] = memArray[i+2];
  } 

}*/

void showLetter(char l) {
  phrase[selector] = l;
  OLED_Clear();
 
  
  
}

void saveLetter(char l) {
  
  if (selector< sizeof(phrase)) {
    selector++;
  } 
  else {
    selector = 0;
  }

  phrase[selector] = l;
}


/*
void saveLetter(char l) {
  
  phrase[val3] = l;
  letterPosition++;
}
*/


void detectSwitch() {
  
  
  int val = analogRead(1);
  
  static boolean state = false;
  static unsigned long int time = 0;
  
  if (val>50) {
   state = true; 
    
  } else {
   if (state == true) {
   
   if (millis()>(time+200)) {
    saveLetter(val3);
   }
    state =false;
   } 
    
  }
  
}