From f1219e411c45b615ed231415d1c19341cc8db873 Mon Sep 17 00:00:00 2001
From: borti4938 <borti4938@gmx.de>
Date: Fri, 19 Aug 2016 14:47:43 +0200
Subject: [PATCH] Select previous item (dbl klick) on first element wraps
 around to last item

---
 Cart_Reader/Cart_Reader.ino | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/Cart_Reader/Cart_Reader.ino b/Cart_Reader/Cart_Reader.ino
index 683795a..93305ed 100644
--- a/Cart_Reader/Cart_Reader.ino
+++ b/Cart_Reader/Cart_Reader.ino
@@ -861,9 +861,9 @@ unsigned char questionBox_OLED(const char* question, char answers[7][20], int nu
           break;
         }
       }
-      else if (choice > 0) {
-        choice--;
-      }
+      else 
+        choice = (choice > 0) ? choice - 1 : num_answers - 1;
+
 
       // draw selection box
       display.drawPixel(0, 8 * choice + 12, WHITE);