Stephen Ralph / Mbed 2 deprecated CryptoPenEncrypt

Pt. 2 | Encryption encrypt program

Dependencies:   mbed 4DGL-uLCD-SE SDFileSystem PinDetect

Diff: Letter.cpp

Revision:
0:35bd4a705079
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Letter.cpp	Thu Jan 03 22:36:11 2019 +0000
@@ -0,0 +1,29 @@
+#include "Letter.h"
+using namespace std;
+
+Letter::Letter()
+{
+  current= 'A';
+}
+
+void Letter::inc()
+{
+  if (current=='Z'){
+      current = 'A';
+    }
+    else{
+        current++;
+    }
+}
+void Letter::dec()
+{
+    if (current=='A'){
+        current = 'Z';
+    }
+    else {
+        current--;
+    }
+  }
+char Letter::getChar(){
+    return current;
+    }