#include <Keyboard.h>
  
  #include <Wire.h>
  #include "Adafruit_MPR121.h"
  
  #include <string.h>
  #define ti 20
  

  #include<SD.h>
  

  #ifndef _BV
  #define _BV(bit) (1 << (bit)) 
  #endif
  
  // You can have up to 4 on one i2c bus but one is enough for testing!
  Adafruit_MPR121 cap = Adafruit_MPR121();
  
  // Keeps track of the last pins touched
  // so we know when buttons are 'released'
  uint16_t lasttouched = 0;
  uint16_t currtouched = 0;
  int tab[]={3,7,15,2,6,14,1,5,9,0,4,8};

  File fichier,fichier2;

  String filename="texte.txt";

  String filename2="texto.txt";
  char c; boolean written;
  
  
  
  
  
  
  
  

  
  void keyboardprint ( String texte ){
    int i = 0;
    while (texte[i]!='\0'){
      if(texte[i]=='@'){
        Keyboard.write('"');
      }
      else if(texte[i]=='"'){
        Keyboard.write('@');
      }
      else if(texte[i]=='\\'){
        Keyboard.press(KEY_RIGHT_ALT);
        Keyboard.press(92);
      }
      else {
        Keyboard.write(texte[i]);
        }
      delay(ti);
      Keyboard.releaseAll();
      i++;
      }
    }
  

  void setup() {
    //keyboard out
     pinMode(2, INPUT_PULLUP); 
    Keyboard.begin();
  
    //Serial
    Serial.begin(9600);

    while (!Serial) { // needed to keep leonardo/micro from starting too fast!
      delay(10);
    }

  
    //SD
    while(! SD.begin(4)){
      delay(1000);
    }
    Serial.println("SD OK");
  

    //File1

    while( !(fichier=SD.open(filename,FILE_WRITE)) ){
      delay(1000);
    }
    Serial.println("file OK");

  
    //File2
    while( !(fichier2=SD.open(filename,FILE_WRITE)) ){
      delay(1000);
    }
    Serial.println("file2 OK");

    
    //keyboard in
    Serial.println("Adafruit MPR121 Capacitive Touch sensor test"); 
    
    // Default address is 0x5A, if tied to 3.3V its 0x5B
    // If tied to SDA its 0x5C and if SCL then 0x5D
    if (!cap.begin(0x5A)) {
      Serial.println("MPR121 not found, check wiring?");
      while (1);
    }
    Serial.println("MPR121 found!");
  }
  
  
  
  
  

  void loop() {
    // Get the currently touched pads
    currtouched = cap.touched();

    written=false;
  
  
  
    
    

    //effacement de la mémoire

    if ((currtouched & _BV(2)) && !(lasttouched & _BV(2)) ) {
      Serial.println("D");

      fichier.close();
      SD.remove(filename);
      fichier=SD.open(filename,FILE_WRITE);
      
      fichier2.close();
      SD.remove(filename2);
      fichier=SD.open(filename2,FILE_WRITE);
      

      //effacer ce qui est présent dans la carte SD

      }

    //récupération des entrées

    if ((currtouched & _BV(5)) && !(lasttouched & _BV(5))) {
      Serial.println("R");
      fichier.seek(0);
      while((c=fichier.read())!=-1){
        Keyboard.write(c);

      }

      Keyboard.write(KEY_RETURN);
      Keyboard.write(KEY_RETURN);
      
      fichier2.seek(0);
      while((c=fichier2.read())!=-1){
        Keyboard.write(c);
      }

    }

    
    for (uint8_t i=0; i<12; i++) {

      
      if(i==2 || i==5)i++;//ne pas traiter R et D
      

      // it if *is* touched and *wasnt* touched before, alert!
      if ((currtouched & _BV(i)) && !(lasttouched & _BV(i)) ) {

        written=true;

        Serial.print(tab[i]); Serial.println(" touched");

        c=('0'+tab[i]);

        fichier2.write('<');
        fichier2.write(c);
        fichier2.write('>');

        Keyboard.press(c);

      }

      // if it *was* touched and now *isnt*, alert!
      if (!(currtouched & _BV(i)) && (lasttouched & _BV(i)) ) {

        written=true;

        Serial.print(tab[i]); Serial.println(" released");

        c=('0'+tab[i]);

        fichier2.write('>');
        fichier2.write(c);
        fichier2.write('<');
        
        fichier.write(c);

        Keyboard.release(c);

      }

    }

    if(written){
      fichier.write('\n');
      fichier.flush();//force l'enregistrement physique des données
      fichier2.write('\n');
      fichier2.flush();
    }
  
  
  
  
  
  
  
  
  

  
    // reset our state
    lasttouched = currtouched;
  
    // comment out this line for detailed data from the sensor!
    return;

    
    // debugging info, what
    Serial.print("\t\t\t\t\t\t\t\t\t\t\t\t\t 0x"); Serial.println(cap.touched(), HEX);
    Serial.print("Filt: ");
    for (uint8_t i=0; i<12; i++) {
      Serial.print(cap.filteredData(i)); Serial.print("\t");
    }
    Serial.println();
    Serial.print("Base: ");
    for (uint8_t i=0; i<12; i++) {
      Serial.print(cap.baselineData(i)); Serial.print("\t");
    }
    Serial.println();
    
    // put a delay so it isn't overwhelming
    delay(100);

  }
  
  

  // v released   >v<
  // v pressed    <v>