added bounce detection for BOOTSEL

cubesatsim/cubesatsim.ino

@@ -3514,6 +3514,12 @@ void process_pushbutton() {
 
 void process_bootsel() {
 	
+  if ((new_mode != mode) || (prompt != false)) {
+    Serial.println("******* BOOTSEL bounce error!! *******\n\n");
+    return;
+  }
+		
+
 //  Serial.println("BOOTSEL pressed!");  
 	
   int release = FALSE;