From 8c5a50259149cb4963ca23bfd55b8c1d8912a9fe Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Robert=20J=C3=B6rdens?= <rj@quartiq.de>
Date: Thu, 24 Jan 2019 14:46:38 +0000
Subject: [PATCH] ad53xx: ignore F3 (reserved)
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Signed-off-by: Robert Jördens <rj@quartiq.de>
---
 artiq/coredevice/ad53xx.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/artiq/coredevice/ad53xx.py b/artiq/coredevice/ad53xx.py
index 7e8654d63..c19239583 100644
--- a/artiq/coredevice/ad53xx.py
+++ b/artiq/coredevice/ad53xx.py
@@ -176,7 +176,7 @@ class AD53xx:
             (AD53XX_CMD_SPECIAL | AD53XX_SPECIAL_CONTROL | 0b0010) << 8)
         if not blind:
             ctrl = self.read_reg(channel=0, op=AD53XX_READ_CONTROL)
-            if ctrl != 0b0010:
+            if (ctrl & 0b10111) != 0b00010:
                 raise ValueError("DAC CONTROL readback mismatch")
             delay(15*us)