Prusa MMU2 (#12967)

Marlin/src/gcode/parser.cpp

@@ -143,12 +143,27 @@ void GCodeParser::parse(char *p) {
       while (*p == ' ') p++;
 
       // Bail if there's no command code number
-      if (!NUMERIC(*p)) return;
+      // Prusa MMU2 has T?/Tx/Tc commands
+      #if DISABLED(PRUSA_MMU2)
+        if (!NUMERIC(*p)) return;
+      #endif
 
       // Save the command letter at this point
       // A '?' signifies an unknown command
       command_letter = letter;
 
+
+      #if ENABLED(PRUSA_MMU2)
+        if (letter == 'T') {
+          // check for special MMU2 T?/Tx/Tc commands
+          if (*p == '?' || *p == 'x' || *p == 'c') {
+            string_arg = p;
+            return;
+          }
+        }
+      #endif
+
+
       // Get the code number - integer digits only
       codenum = 0;
       do { codenum *= 10, codenum += *p++ - '0'; } while (NUMERIC(*p));