     SPI.begin();
     
     // Start with no card inserted.
-    removeCard();
+    removeCard(false);
     
     // Set up the serial port.
     Serial.begin(9600);

void loop();
int getCommand();
int insertCard(int card);
void removeCard();
int updateDisplay(int digit);
void printCardStatus();
byte getCardStatus(int card);

// the card reader adapter.  We also set the reader switch pin to HIGH
// so the reader thinks that the card was physically removed.
//
// Parameters:
//     print_response - Print response to the serial port if TRUE.  We
//                      call this function internally and only want to
//                      print a response if the user explicitly sent a
//                      command to remove the card.
//
void removeCard(boolean print_response)
{
    digitalWrite(reader_switch_pin, HIGH);
    digitalWrite(mux_en_pin, LOW);
    debug_print(String("Removed card " + String(inserted_card)));
    inserted_card = 0;

    // Blank the display
    updateDisplay(-1);

    // Print our serial response if requested.
    if (print_response) {
        Serial.println(RESP_OK);
    }
}

// updateDisplay()
