Trying to silence the ISO warnings. Also, add "=" to both programs.

Author: PaintYourDragon

Cheekmate/Arduino/Cheekmate/config.h

@@ -29,49 +29,50 @@
 #define MEDIUM_GAP    (DOT_LENGTH * 7) // Duraction of gap between words
 
 // Morse code symbol-to-mark conversion dictionary. This contains the
-// standard A-Z and 0-9, and one extra symbol "+" that's sometimes used
+// standard A-Z and 0-9, and extra symbols "+" and "=" sometimes used
 // in chess. If other symbols are needed for this or other games, they
 // can be added to the end of the list.
-struct {
+const struct {
   char symbol;
   char *mark;
 } morse[] = {
-    'A', ".-",
-    'B', "-...",
-    'C', "-.-.",
-    'D', "-..",
-    'E', ".",
-    'F', "..-.",
-    'G', "--.",
-    'H', "....",
-    'I', "..",
-    'J', ".---",
-    'K', "-.-",
-    'L', ".-..",
-    'M', "--",
-    'N', "-.",
-    'O', "---",
-    'P', ".--.",
-    'Q', "--.-",
-    'R', ".-.",
-    'S', "...",
-    'T', "-",
-    'U', "..-",
-    'V', "...-",
-    'W', ".--",
-    'X', "-..-",
-    'Y', "-.--",
-    'Z', "--..",
-    '0', "-----",
-    '1', ".----",
-    '2', "..---",
-    '3', "...--",
-    '4', "....-",
-    '5', ".....",
-    '6', "-....",
-    '7', "--...",
-    '8', "---..",
-    '9', "----.",
-    '+', ".-.-.",
+    'A', (char *)".-",
+    'B', (char *)"-...",
+    'C', (char *)"-.-.",
+    'D', (char *)"-..",
+    'E', (char *)".",
+    'F', (char *)"..-.",
+    'G', (char *)"--.",
+    'H', (char *)"....",
+    'I', (char *)"..",
+    'J', (char *)".---",
+    'K', (char *)"-.-",
+    'L', (char *)".-..",
+    'M', (char *)"--",
+    'N', (char *)"-.",
+    'O', (char *)"---",
+    'P', (char *)".--.",
+    'Q', (char *)"--.-",
+    'R', (char *)".-.",
+    'S', (char *)"...",
+    'T', (char *)"-",
+    'U', (char *)"..-",
+    'V', (char *)"...-",
+    'W', (char *)".--",
+    'X', (char *)"-..-",
+    'Y', (char *)"-.--",
+    'Z', (char *)"--..",
+    '0', (char *)"-----",
+    '1', (char *)".----",
+    '2', (char *)"..---",
+    '3', (char *)"...--",
+    '4', (char *)"....-",
+    '5', (char *)".....",
+    '6', (char *)"-....",
+    '7', (char *)"--...",
+    '8', (char *)"---..",
+    '9', (char *)"----.",
+    '+', (char *)".-.-.",
+    '=', (char *)"-...-",
 };
 #define NUM_SYMBOLS (sizeof morse / sizeof morse[0])

Cheekmate/CircuitPython/code.py

@@ -49,7 +49,7 @@
 MEDIUM_GAP = DOT_LENGTH * 7  #    Duraction of gap between words
 
 # Morse code symbol-to-mark conversion dictionary. This contains the
-# standard A-Z and 0-9, and one extra symbol "+" that's sometimes used
+# standard A-Z and 0-9, and extra symbols "+" and "=" sometimes used
 # in chess. If other symbols are needed for this or other games, they
 # can be added to the end of the list.
 MORSE = {
@@ -90,6 +90,7 @@
     "8": "---..",
     "9": "----.",
     "+": ".-.-.",
+    "=": "-...-",
 }
 
 # SOME FUNCTIONS -----------------------------------------------------------