From d7610cf0b8148391d80b8991f9f070e635a035b8 Mon Sep 17 00:00:00 2001
From: Tom Tsou <tom.tsou@ettus.com>
Date: Thu, 7 May 2015 17:39:49 -0700
Subject: radioInterface: Reset sample buffer cursors on each start

Non-zero buffer indices may lead to uplink/downlink timing offset
during repeated start/stop cycles. Mainly affects USRP2 and other
resampled devices that rely on the buffer to absorb sample block
sizes that are not multiples of the burst size.

Signed-off-by: Tom Tsou <tom.tsou@ettus.com>
---
 Transceiver52M/radioInterface.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/Transceiver52M/radioInterface.cpp b/Transceiver52M/radioInterface.cpp
index 369f2ac..14a4fc2 100644
--- a/Transceiver52M/radioInterface.cpp
+++ b/Transceiver52M/radioInterface.cpp
@@ -185,6 +185,9 @@ bool RadioInterface::start()
   if (!mRadio->start())
     return false;
 
+  recvCursor = 0;
+  sendCursor = 0;
+
   writeTimestamp = mRadio->initialWriteTimestamp();
   readTimestamp = mRadio->initialReadTimestamp();
 
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