/// <summary>
/// Method that allow access to the class
/// </summary>
/// <returns>Instance of the class SDCard</returns>
public static SDCard GetInstance()
{
if (_instance == null)
{
_instance = new SDCard();
}
return(Instance);
}
/// <summary>
/// This method initializes the different classes and data
/// </summary>
private void InitializesClassesData()
{
ServoMotor.GetInstance().Lock();
RFIDReader.GetInstance();
DisplayLoad();
ListOfCards.GetInstance().CardsList = SDCard.GetInstance().LoadCards();
if (ListOfCards.GetInstance().CardsList == null)
{
ListOfCards.GetInstance().CardsList = new ArrayList();
}
RestoreInitialState();
}
/// <summary>
/// When the menu to delete a card is selected
/// </summary>
private void DeleteCard()
{
switch (_deleteCardState)
{
case DELETE_CARD_STATE.listIsEmpty:
LCD.GetInstance().Clear();
if (ListOfCards.GetInstance().IsEmpty())
{
LCD.GetInstance().DisplayText(GT.Color.Red, "/!\\ Aucun badge n'est enregistre /!\\", 10, LCD.GetInstance().LcdHeight / 2);
Thread.Sleep(2000);
RestoreInitialState();
}
else
{
_deleteCardState = DELETE_CARD_STATE.selectCard;
}
break;
case DELETE_CARD_STATE.selectCard:
int positionY = 10; // The Y position on the LCD
int i = 0;
foreach (Card card in ListOfCards.GetInstance().CardsList)
{
if (LCDTextFields.CursorPosition == i) // If the cursorposition is at this char
{
LCD.GetInstance().DisplayText(GT.Color.Blue, card.Name, 10, positionY);
}
else
{
LCD.GetInstance().DisplayText(GT.Color.Black, card.Name, 10, positionY);
}
positionY += 15; // Increment the Y position
i++;
}
LCD.GetInstance().DisplayText(GT.Color.Gray, "Pour selectionner le badge, appuyer sur le joystick", 10, LCD.GetInstance().LcdHeight - 30);
if (_joystickX.Read() > JOYSTICK_DOWN_LEFT) // If joystick is down
{
LCDTextFields.CursorPosition++; // Move the cursor to the next name
if (LCDTextFields.CursorPosition > ListOfCards.GetInstance().CardsList.Count - 1) // If the cursor get out of the range of the list of cards array
{
LCDTextFields.CursorPosition = 0; // Move to the first position of the list of cards array
}
Thread.Sleep(100); // Wait 0.1 second to prevent the cursor from moving too fast
}
else if (_joystickX.Read() < JOYSTICK_UP_RIGHT) // If joystick is up
{
LCDTextFields.CursorPosition--; // Move the cursor to the previous name
if (LCDTextFields.CursorPosition < 0) // If the cursor get out of the range of the list array
{
LCDTextFields.CursorPosition = ListOfCards.GetInstance().CardsList.Count - 1; // Move to the last position of the list of cards array
}
Thread.Sleep(100); // Wait 0.1 second to prevent the cursor from moving too fast
}
if (!_joystickButton.Read()) // If joystick button is press
{
_deleteCardState = DELETE_CARD_STATE.save;
}
break;
case DELETE_CARD_STATE.save:
try
{
ListOfCards.GetInstance().DeleteCardFromList(LCDTextFields.CursorPosition);
SDCard.GetInstance().SaveCards(ListOfCards.GetInstance().CardsList);
_deleteCardState = DELETE_CARD_STATE.success;
}
catch (Exception e)
{
_deleteCardState = DELETE_CARD_STATE.errorMSG;
}
break;
case DELETE_CARD_STATE.errorMSG:
DisplayError();
Thread.Sleep(2000);
RestoreInitialState();
break;
case DELETE_CARD_STATE.success:
DisplaySave();
LCD.GetInstance().DisplayText(GT.Color.Green, "Le badge a bien ete supprime", 10, LCD.GetInstance().LcdHeight / 2);
Thread.Sleep(2000);
RestoreInitialState();
break;
default:
_deleteCardState = DELETE_CARD_STATE.listIsEmpty;
break;
}
}
/// <summary>
/// When the menu to add a card is selected
/// </summary>
private void AddCard()
{
switch (_addCardState)
{
case ADD_CARD_STATE.waitRFID:
LCD.GetInstance().Clear();
LCD.GetInstance().DisplayText(GT.Color.Gray, "Veuillez approcher un badge du lecteur");
if (RFIDReader.GetInstance().IsBadgeScan)
{
_addCardState = ADD_CARD_STATE.RFIDDetected;
LCD.GetInstance().DisplayText(GT.Color.Green, "Votre badge a ete correctement scanne", 10, LCD.GetInstance().LcdHeight / 2);
Thread.Sleep(2000); // Wait 2 seconds to see the message
}
break;
case ADD_CARD_STATE.RFIDDetected:
LCD.GetInstance().Clear();
string uid = RFIDReader.GetInstance().CurrentUid;
if (ListOfCards.GetInstance().FindCardInlist(uid)) // If the badge scanned already exist
{
_addCardState = ADD_CARD_STATE.badgeExist;
}
else
{
_addCardState = ADD_CARD_STATE.bageDontExist;
}
break;
case ADD_CARD_STATE.badgeExist:
LCD.GetInstance().DisplayText(GT.Color.Red, "/!\\ Erreur : Ce badge est deja sauvegarde /!\\", 10, LCD.GetInstance().LcdHeight / 2);
Thread.Sleep(2000); // Wait 2 seconds to see the message
RestoreInitialState();
break;
case ADD_CARD_STATE.bageDontExist:
string name = LCDTextFields.Content; // The content value of the LCD field, it's the name of the badge
char[] charArray = name.ToCharArray(); // We split the name in a char array to make it easier to modify char by char
int x = 110; // The position index where we're gonna write the first char
if (LCDTextFields.ShouldBeRefresh) // If we need to refresh because we have modify a char or the position of the cursor
{
LCD.GetInstance().Clear();
LCD.GetInstance().DisplayText(GT.Color.Gray, "Votre badge :", 10, LCD.GetInstance().LcdHeight / 2);
LCD.GetInstance().DisplayText(GT.Color.Gray, "Pour valider le nom, appuyer sur le joystick", 10, LCD.GetInstance().LcdHeight - 20);
for (int i = 0; i < charArray.Length; i++)
{
if (i == LCDTextFields.CursorPosition) // If the cursorposition is at this char
{
LCD.GetInstance().DisplayText(GT.Color.Blue, charArray[i].ToString(), x, LCD.GetInstance().LcdHeight / 2);
}
else
{
LCD.GetInstance().DisplayText(GT.Color.Black, charArray[i].ToString(), x, LCD.GetInstance().LcdHeight / 2);
}
x += 10; // Increment the X position on the LCD
}
LCDTextFields.ShouldBeRefresh = false;
}
if (_joystickX.Read() < JOYSTICK_UP_RIGHT) // If the joystick is up
{
charArray[LCDTextFields.CursorPosition]++; // Increment the char ex : A -> B
LCDTextFields.ShouldBeRefresh = true;
Thread.Sleep(100); // Wait 0.1 second to prevent the letter from scrolling too fast
}
else if (_joystickX.Read() > JOYSTICK_DOWN_LEFT) // If the joystick is down
{
charArray[LCDTextFields.CursorPosition]--; // ecrement the char ex : B -> A
LCDTextFields.ShouldBeRefresh = true;
Thread.Sleep(100); // Wait 0.1 second to prevent the letter from scrolling too fast
}
if (_joystickY.Read() < JOYSTICK_UP_RIGHT) // If the joystick is right
{
LCDTextFields.CursorPosition++; // Move the cursor to the next char
if (LCDTextFields.CursorPosition > charArray.Length - 1) // If the cursor get out of the range of the char array
{
LCDTextFields.CursorPosition = 0; // Move to the first position of the char array
}
LCDTextFields.ShouldBeRefresh = true;
Thread.Sleep(200); // Wait 0.2 seconds to prevent the cursor from moving too fast
}
else if (_joystickY.Read() > JOYSTICK_DOWN_LEFT) // If the joystick is left
{
LCDTextFields.CursorPosition--; // Move the cursor to the previous char
if (LCDTextFields.CursorPosition < 0) // If the cursor get out of the range of the char array
{
LCDTextFields.CursorPosition = charArray.Length - 1; // Move to the last position of the char array
}
LCDTextFields.ShouldBeRefresh = true;
Thread.Sleep(200); // Wait 0.2 seconds to prevent the cursor from moving too fast
}
LCDTextFields.Content = new string(charArray); // Set the LCD text field with the value of the modify char array
if (!_joystickButton.Read()) // If joystick button is press
{
_addCardState = ADD_CARD_STATE.save;
}
break;
case ADD_CARD_STATE.save:
try
{
uid = RFIDReader.GetInstance().CurrentUid; // Get the uid of the badge that was scanned
name = LCDTextFields.Content;
ListOfCards.GetInstance().AddCardToList(name, uid);
SDCard.GetInstance().SaveCards(ListOfCards.GetInstance().CardsList);
_addCardState = ADD_CARD_STATE.successMSG;
}
catch (Exception e)
{
_addCardState = ADD_CARD_STATE.errorMSG;
}
break;
case ADD_CARD_STATE.errorMSG:
DisplayError();
Thread.Sleep(2000);
RestoreInitialState();
break;
case ADD_CARD_STATE.successMSG:
DisplaySave();
LCD.GetInstance().DisplayText(GT.Color.Green, "Le badge a bien ete ajoute", 10, LCD.GetInstance().LcdHeight / 2);
Thread.Sleep(2000);
RestoreInitialState();
break;
default:
_addCardState = ADD_CARD_STATE.waitRFID;
break;
}
}
private SDCardSerializer()
{
_sdCard = new SDCard();
}