docs

firmware/controllers/engine_controller.cpp

@@ -236,7 +236,10 @@ static void scheduleNextSlowInvocation(void) {
 
 static void periodicFastCallback(DECLARE_ENGINE_PARAMETER_SIGNATURE) {
 	engine->periodicFastCallback();
-
+	/**
+	 * not many reasons why we use ChibiOS timer and not say a dedicated thread here
+	 * the only down-side of a dedicated thread is the cost of thread stack
+	 */
 	chVTSetAny(&periodicFastTimer, MS2ST(20), (vtfunc_t) &periodicFastCallback, engine);
 }