From 834d03527bc5161fdfe19792dedf71a4c72be51a Mon Sep 17 00:00:00 2001
From: Sebastien Bourdeauducq <sb@m-labs.hk>
Date: Thu, 13 Jun 2019 18:07:39 +0800
Subject: [PATCH] examples/dds_setter: fix RTIO underflow

---
 artiq/examples/kc705_nist_clock/repository/dds_setter.py | 1 +
 1 file changed, 1 insertion(+)

diff --git a/artiq/examples/kc705_nist_clock/repository/dds_setter.py b/artiq/examples/kc705_nist_clock/repository/dds_setter.py
index c5490d6b2..7f4b1447e 100644
--- a/artiq/examples/kc705_nist_clock/repository/dds_setter.py
+++ b/artiq/examples/kc705_nist_clock/repository/dds_setter.py
@@ -25,6 +25,7 @@ class DDSSetter(EnvExperiment):
 
     @kernel
     def set_dds(self, dds, frequency):
+        self.core.break_realtime()
         dds.set(frequency)
         delay(200*ms)