Rework handling of ctrl-c interrupt

Author: DavePutz

supervisor/shared/tick.c

@@ -102,15 +102,15 @@ void mp_hal_delay_ms(mp_uint_t delay) {
     while (remaining > 0) {
         RUN_BACKGROUND_TASKS;
         // Check to see if we've been CTRL-Ced by autoreload or the user.
-        if(MP_STATE_VM(mp_pending_exception) == MP_OBJ_FROM_PTR(&MP_STATE_VM(mp_kbd_exception)) ||
-           MP_STATE_VM(mp_pending_exception) == MP_OBJ_FROM_PTR(&MP_STATE_VM(mp_reload_exception)) ||
-           WATCHDOG_EXCEPTION_CHECK()) {
-           if(MP_STATE_VM(mp_pending_exception) == MP_OBJ_FROM_PTR(&MP_STATE_VM(mp_kbd_exception)))
+        if(MP_STATE_VM(mp_pending_exception) == MP_OBJ_FROM_PTR(&MP_STATE_VM(mp_kbd_exception)))
            {
             // clear exception and generate stacktrace
             MP_STATE_VM(mp_pending_exception) = MP_OBJ_NULL;
             nlr_raise(mp_obj_new_exception(&mp_type_KeyboardInterrupt));
-           }
+          }
+        if( MP_STATE_VM(mp_pending_exception) == MP_OBJ_FROM_PTR(&MP_STATE_VM(mp_reload_exception)) ||
+           WATCHDOG_EXCEPTION_CHECK()) {
+            // stop sleeping immediately
             break;
         }
         remaining = end_tick - port_get_raw_ticks(NULL);