void menu()
 {
 exitMenu = 1;
 buttonValue = analogRead(buttonPin); //lecture de la valeur des boutons
 Serial.println(buttonValue); //debug
 
 if(buttonValue <1000){
   
   display.clearDisplay();
   display.setTextSize(1);
   display.setCursor(0,0);
   display.setTextColor(WHITE,BLACK);
   display.print(F(">Seuil bas: "));
   display.println(rpmlow);
   display.print(F(" Seuil haut: "));
   display.println(rpmhigh);
   display.print(F(" facteur: "));
   display.println(rpmfactor);
   display.display();
   btPresse=1;
   menuValue = MENU1_1;
   Serial.println(F("Init menu OK")); //debug
   
   while(exitMenu == 1){   
     Serial.println(F("while loop entry")); //debug
     //exitMenu = 0; //debug
     noInterrupts();
     buttonValue = analogRead(buttonPin); //lecture de la valeur des boutons
   int tmpButtonState = 0;             // the current reading from the input pin
   
   if(buttonValue>=BUTTON1LOW && buttonValue<BUTTON1HIGH){
     //Read switch 1
     tmpButtonState = BUTTON1;
   }else if(buttonValue>BUTTON2LOW && buttonValue<BUTTON2HIGH){
     //Read switch 2
     tmpButtonState = BUTTON2;
   }else if(buttonValue>BUTTON3LOW && buttonValue<BUTTON3HIGH){
     //Read switch 3
     tmpButtonState = BUTTON3;
   }else if(buttonValue>BUTTON4LOW && buttonValue<BUTTON4HIGH){
     //Read switch 4
     tmpButtonState = BUTTON4;
   }else if(buttonValue>BUTTON5LOW && buttonValue<BUTTON5HIGH){
     //Read switch 5
     tmpButtonState = BUTTON5;
   }else if(buttonValue>1000){
     btPresse = 0;
     buttonState=7;
   }
   // check to see if you just pressed the button 
   // (i.e. the input went from LOW to a buttonState),  and you've waited 
   // long enough since the last press to ignore any noise:  

   // If the switch changed, due to noise or pressing:
   if (tmpButtonState != lastButtonState) {
     // reset the debouncing timer
     lastDebounceTime = millis();
   } 

   if ((millis() - lastDebounceTime) > debounceDelay) {
     // whatever the reading is at, it's been there for longer
     // than the debounce delay, so take it as the actual current state:
     buttonState = tmpButtonState;
   }

   // save the reading.  Next time through the loop,
   // it'll be the lastButtonState:
   lastButtonState = tmpButtonState;
    
    Serial.print(F("buttonsState: "));
    Serial.println(buttonState);
   
   switch(buttonState){
     case BUTTON1: //gauche
     switch(menuValue){
    case MENU1_1:
    if (btPresse == 0){
      exitMenu = 0;
      btPresse = 1;
    }    
    break; 
    case MENU1_2:
    if (btPresse == 0){
      display.clearDisplay();
      display.setTextSize(1);
      display.setCursor(0,0);
      display.setTextColor(WHITE,BLACK);
      display.print(F(">Seuil bas: "));
      display.println(rpmlow);
      display.print(F(" Seuil haut: "));
      display.println(rpmhigh);
      display.print(F(" facteur: "));
      display.println(rpmfactor);
      display.display();
      menuValue=MENU1_1;
      btPresse = 1;
    }    
    break;
    case MENU2_1:
    if  (btPresse ==0){
      exitMenu = 0;
      btPresse = 1;
    }    
    break;
    case MENU2_2:
    if (btPresse == 0){
      display.clearDisplay();
      display.setTextSize(1);
      display.setCursor(0,0);
      display.setTextColor(WHITE,BLACK);
      display.print(F(" Seuil bas: "));
      display.println(rpmlow);
      display.print(F(">Seuil haut: "));
      display.println(rpmhigh);
      display.print(F(" facteur: "));
      display.println(rpmfactor);
      display.display();
      menuValue=MENU2_1;
      btPresse = 1;
    }    
    break;
    case MENU3_1:
    if (btPresse ==0){
      exitMenu = 0;
      btPresse = 1;
    }    
    break;
    case MENU3_2:
    if (btPresse ==0){
      display.clearDisplay();
      display.setTextSize(1);
      display.setCursor(0,0);
      display.setTextColor(WHITE,BLACK);
      display.print(F(" Seuil bas: "));
      display.println(rpmlow);
      display.print(F(" Seuil haut: "));
      display.println(rpmhigh);
      display.print(F(">facteur: "));
      display.println(rpmfactor);
      display.display();
      menuValue =MENU3_1;
      btPresse = 1;
    }    
    break;
     }
     break;
     case BUTTON2: //haut
       switch(menuValue){
    case MENU1_1:
    if (btPresse ==0){
      display.clearDisplay();
      display.setTextSize(1);
      display.setCursor(0,0);
      display.setTextColor(WHITE,BLACK);
      display.print(">Seuil bas: ");
      display.println(rpmlow);
      display.print(" Seuil haut: ");
      display.println(rpmhigh);
      display.print(" facteur: ");
      display.println(rpmfactor);
      display.display();
      btPresse = 1;
    }    
    break; 
    case MENU1_2:
    if (btPresse ==0){
      rpmlow=rpmlow-100;
      display.clearDisplay();
      display.setTextSize(1);
      display.setCursor(0,0);
      display.setTextColor(BLACK,WHITE);
      display.print(">");
      display.setTextColor(WHITE,BLACK);
      display.print("Seuil bas: ");
      display.println(rpmlow);
      display.print(" Seuil haut: ");
      display.println(rpmhigh);
      display.print(" facteur: ");
      display.println(rpmfactor);
      display.display();
      btPresse=1;
    }    
    break;
    case MENU2_1:
    if (btPresse ==0){
      display.clearDisplay();
      display.setTextSize(1);
      display.setCursor(0,0);
      display.setTextColor(WHITE,BLACK);
      display.print(">Seuil bas: ");
      display.println(rpmlow);
      display.print(" Seuil haut: ");
      display.println(rpmhigh);
      display.print(" facteur: ");
      display.println(rpmfactor);
      display.display();
      menuValue=MENU1_1;
      btPresse = 1;
    }    
    break;
    case MENU2_2:
    if (btPresse==0){
    rpmhigh=rpmhigh-100;
      display.clearDisplay();
      display.setTextSize(1);
      display.setCursor(0,0);
      display.setTextColor(WHITE,BLACK);
      display.print(">Seuil bas: ");
      display.println(rpmlow);
      display.setTextColor(BLACK,WHITE);
      display.print(">");
      display.setTextColor(WHITE,BLACK);    
      display.print("Seuil haut: ");
      display.println(rpmhigh);
      display.print(" facteur: ");
      display.println(rpmfactor);
      display.display();
      btPresse=1;
       }
    break;
    case MENU3_1:
    if (btPresse ==0){
      display.clearDisplay();
      display.setTextSize(1);
      display.setCursor(0,0);
      display.setTextColor(WHITE,BLACK);
      display.print(" Seuil bas: ");
      display.println(rpmlow);
      display.print(">Seuil haut: ");
      display.println(rpmhigh);
      display.print(" facteur: ");
      display.println(rpmfactor);
      display.display();
      menuValue=MENU2_1;
      btPresse = 1;
    }
    break;
    case MENU3_2:
    if (btPresse == 0){
      display.clearDisplay();
      display.setTextSize(1);
      display.setCursor(0,0);
      display.setTextColor(WHITE,BLACK);
      display.print(" Seuil bas: ");
      display.println(rpmlow);
      display.print(" Seuil haut: ");
      display.println(rpmhigh);
      display.setTextColor(BLACK,WHITE);
      display.print(">");
      display.setTextColor(WHITE,BLACK);
      display.print("facteur: ");
      display.println(rpmfactor);
      display.display();
      btPresse = 1;
    }    
    break;
       }
     break;
     case BUTTON3: //droite
       switch(menuValue){
    case MENU1_1:
    if (btPresse == 0){
     display.clearDisplay();
      display.setTextSize(1);
      display.setCursor(0,0);
      display.setTextColor(BLACK,WHITE);
      display.print(">");
      display.setTextColor(WHITE,BLACK);
      display.print("Seuil bas: ");
      display.println(rpmlow);
      display.print(" Seuil haut: ");
      display.println(rpmhigh);
      display.print(" facteur: ");
      display.println(rpmfactor);
      display.display();
      menuValue=MENU1_2; 
      btPresse = 1;
    }    
    break; 
    case MENU1_2:
    if (btPresse ==0){
      display.clearDisplay();
      display.setTextSize(1);
      display.setCursor(0,0);
      display.setTextColor(BLACK,WHITE);
      display.print(">");
      display.setTextColor(WHITE,BLACK);
      display.print("Seuil bas: ");
      display.println(rpmlow);
      display.print(" Seuil haut: ");
      display.println(rpmhigh);
      display.print(" facteur: ");
      display.println(rpmfactor);
      display.display();
      btPresse=1;
    }    
    break;
    case MENU2_1:
    if (btPresse==0){
     display.clearDisplay();
      display.setTextSize(1);
      display.setCursor(0,0);
      display.setTextColor(WHITE,BLACK);
      display.print(" Seuil bas: ");
      display.println(rpmlow);
      display.setTextColor(BLACK,WHITE);
      display.print(">");
      display.setTextColor(WHITE,BLACK);    
      display.print("Seuil haut: ");
      display.println(rpmhigh);
      display.print(" facteur: ");
      display.println(rpmfactor);
      display.display();
      menuValue=MENU2_2;
      btPresse=1; 
    }
    break;
    case MENU2_2:
    if (btPresse ==0){
      display.clearDisplay();
      display.setTextSize(1);
      display.setCursor(0,0);
      display.setTextColor(WHITE,BLACK);
      display.print(" Seuil bas: ");
      display.println(rpmlow);
      display.setTextColor(BLACK,WHITE);
      display.print(">");
      display.setTextColor(WHITE,BLACK);    
      display.print("Seuil haut: ");
      display.println(rpmhigh);
      display.print(" facteur: ");
      display.println(rpmfactor);
      display.display();
      btPresse=1;
    }     
    break;
    case MENU3_1:
    if (btPresse ==0){
      display.clearDisplay();
      display.setTextSize(1);
      display.setCursor(0,0);
      display.setTextColor(WHITE,BLACK);
      display.print(" Seuil bas: ");
      display.println(rpmlow);
      display.print(" Seuil haut: ");
      display.println(rpmhigh);
      display.setTextColor(BLACK,WHITE);
      display.print(">");
      display.setTextColor(WHITE,BLACK);
      display.print("facteur: ");
      display.println(rpmfactor);
      display.display();
      menuValue =MENU3_2;
      btPresse = 1;
    }
    break;
    case MENU3_2:
    if (btPresse ==0){
      display.clearDisplay();
      display.setTextSize(1);
      display.setCursor(0,0);
      display.setTextColor(WHITE,BLACK);
      display.print(" Seuil bas: ");
      display.println(rpmlow);
      display.print(" Seuil haut: ");
      display.println(rpmhigh);
      display.setTextColor(BLACK,WHITE);
      display.print(">");
      display.setTextColor(WHITE,BLACK);
      display.print("facteur: ");
      display.println(rpmfactor);
      display.display();
      btPresse=1;
    }    
    break;
       }
     break;
     case BUTTON4: //OK
     switch(menuValue){
    case MENU1_1:
    if (btPresse == 0){
     display.clearDisplay();
      display.setTextSize(1);
      display.setCursor(0,0);
      display.setTextColor(BLACK,WHITE);
      display.print(">");
      display.setTextColor(WHITE,BLACK);
      display.print("Seuil bas: ");
      display.println(rpmlow);
      display.print(" Seuil haut: ");
      display.println(rpmhigh);
      display.print(" facteur: ");
      display.println(rpmfactor);
      display.display();
      menuValue=MENU1_2; 
      btPresse = 1;
    }    
    break; 
    case MENU1_2:
    if (btPresse ==0){
      display.clearDisplay();
      display.setTextSize(1);
      display.setCursor(0,0);
      display.setTextColor(BLACK,WHITE);
      display.print(">");
      display.setTextColor(WHITE,BLACK);
      display.print("Seuil bas: ");
      display.println(rpmlow);
      display.print(" Seuil haut: ");
      display.println(rpmhigh);
      display.print(" facteur: ");
      display.println(rpmfactor);
      display.display();
      btPresse=1;
    }    
    break;
    case MENU2_1:
    if (btPresse==0){
     display.clearDisplay();
      display.setTextSize(1);
      display.setCursor(0,0);
      display.setTextColor(WHITE,BLACK);
      display.print(" Seuil bas: ");
      display.println(rpmlow);
      display.setTextColor(BLACK,WHITE);
      display.print(">");
      display.setTextColor(WHITE,BLACK);    
      display.print("Seuil haut: ");
      display.println(rpmhigh);
      display.print(" facteur: ");
      display.println(rpmfactor);
      display.display();
      menuValue=MENU2_2;
      btPresse=1; 
    }
    break;
    case MENU2_2:
    if (btPresse ==0){
      display.clearDisplay();
      display.setTextSize(1);
      display.setCursor(0,0);
      display.setTextColor(WHITE,BLACK);
      display.print(" Seuil bas: ");
      display.println(rpmlow);
      display.setTextColor(BLACK,WHITE);
      display.print(">");
      display.setTextColor(WHITE,BLACK);    
      display.print("Seuil haut: ");
      display.println(rpmhigh);
      display.print(" facteur: ");
      display.println(rpmfactor);
      display.display();
      btPresse=1;
    }     
    break;
    case MENU3_1:
    if (btPresse ==0){
      display.clearDisplay();
      display.setTextSize(1);
      display.setCursor(0,0);
      display.setTextColor(WHITE,BLACK);
      display.print(" Seuil bas: ");
      display.println(rpmlow);
      display.print(" Seuil haut: ");
      display.println(rpmhigh);
      display.setTextColor(BLACK,WHITE);
      display.print(">");
      display.setTextColor(WHITE,BLACK);
      display.print("facteur: ");
      display.println(rpmfactor);
      display.display();
      menuValue =MENU3_2;
      btPresse = 1;
    }
    break;
    case MENU3_2:
    if (btPresse ==0){
      display.clearDisplay();
      display.setTextSize(1);
      display.setCursor(0,0);
      display.setTextColor(WHITE,BLACK);
      display.print(" Seuil bas: ");
      display.println(rpmlow);
      display.print(" Seuil haut: ");
      display.println(rpmhigh);
      display.setTextColor(BLACK,WHITE);
      display.print(">");
      display.setTextColor(WHITE,BLACK);
      display.print("facteur: ");
      display.println(rpmfactor);
      display.display();
      btPresse=1;
    }    
    break;
     }
     break;
     case BUTTON5: //bas
     switch(menuValue){
    case MENU1_1:
    if (btPresse ==0){
      display.clearDisplay();
      display.setTextSize(1);
      display.setCursor(0,0);
      display.setTextColor(WHITE,BLACK);
      display.print(" Seuil bas: ");
      display.println(rpmlow);
      display.print(">Seuil haut: ");
      display.println(rpmhigh);
      display.print(" facteur: ");
      display.println(rpmfactor);
      display.display();
      menuValue=MENU2_1;
      btPresse = 1;
    }    
    break; 
    case MENU1_2:
    if (btPresse ==0){
      rpmlow=rpmlow+100;
      display.clearDisplay();
      display.setTextSize(1);
      display.setCursor(0,0);
      display.setTextColor(BLACK,WHITE);
      display.print(">");
      display.setTextColor(WHITE,BLACK);
      display.print("Seuil bas: ");
      display.println(rpmlow);
      display.print(" Seuil haut: ");
      display.println(rpmhigh);
      display.print(" facteur: ");
      display.println(rpmfactor);
      display.display();
      btPresse=1;
    }    
    break;
    case MENU2_1:
    if (btPresse ==0){
      display.clearDisplay();
      display.setTextSize(1);
      display.setCursor(0,0);
      display.setTextColor(WHITE,BLACK);
      display.print(" Seuil bas: ");
      display.println(rpmlow);
      display.print(" Seuil haut: ");
      display.println(rpmhigh);
      display.print(">facteur: ");
      display.println(rpmfactor);
      display.display();
      menuValue=MENU3_1;
      btPresse = 1;
    }    
    break;
    case MENU2_2:
    if (btPresse==0){
    rpmhigh=rpmhigh+100;
      display.clearDisplay();
      display.setTextSize(1);
      display.setCursor(0,0);
      display.setTextColor(WHITE,BLACK);
      display.print(">Seuil bas: ");
      display.println(rpmlow);
      display.setTextColor(BLACK,WHITE);
      display.print(">");
      display.setTextColor(WHITE,BLACK);    
      display.print("Seuil haut: ");
      display.println(rpmhigh);
      display.print(" facteur: ");
      display.println(rpmfactor);
      display.display();
      btPresse=1;
       }
    break;
    case MENU3_1:
    if (btPresse ==0){
      display.clearDisplay();
      display.setTextSize(1);
      display.setCursor(0,0);
      display.setTextColor(WHITE,BLACK);
      display.print(" Seuil bas: ");
      display.println(rpmlow);
      display.print(" Seuil haut: ");
      display.println(rpmhigh);
      display.print(">facteur: ");
      display.println(rpmfactor);
      display.display();
      btPresse = 1;
    }
    break;
    case MENU3_2:
    if (btPresse == 0){
      display.clearDisplay();
      display.setTextSize(1);
      display.setCursor(0,0);
      display.setTextColor(WHITE,BLACK);
      display.print(" Seuil bas: ");
      display.println(rpmlow);
      display.print(" Seuil haut: ");
      display.println(rpmhigh);
      display.setTextColor(BLACK,WHITE);
      display.print(">");
      display.setTextColor(WHITE,BLACK);
      display.print("facteur: ");
      display.println(rpmfactor);
      display.display();
      btPresse = 1;
    }    
    break;
       }
     break;
   }
   
   
   EEPROM_writeAnything(0, rpmlow);
   EEPROM_writeAnything(2, rpmhigh);
   EEPROM_writeAnything(4, rpmfactor);
   interrupts();
   } //fin while
 } //fin if
   
 }