From db419b17c7e644f0e9f87a5e915a515febaa0b6a Mon Sep 17 00:00:00 2001
From: Thomas Tsou <ttsou@vt.edu>
Date: Mon, 23 May 2011 12:08:09 -0700
Subject: [PATCH] uhd: set attenuation relative to max RF gain

Previously this was referenced off the the ad9862
PGA with a range from 0 to -20 dB. Instead base
the attenuation factor on the maximum total RF
gain returned by the device.

Signed-off-by: Thomas Tsou <ttsou@vt.edu>
---
 public-trunk/Transceiver52M/radioInterface.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/public-trunk/Transceiver52M/radioInterface.cpp b/public-trunk/Transceiver52M/radioInterface.cpp
index 95dee22..c4f8d23 100644
--- a/public-trunk/Transceiver52M/radioInterface.cpp
+++ b/public-trunk/Transceiver52M/radioInterface.cpp
@@ -109,7 +109,7 @@ double RadioInterface::fullScaleOutputValue(void) {
 
 void RadioInterface::setPowerAttenuation(double atten)
 {
-  double HWatten = mRadio->setTxGain(-atten);
+  double HWatten = mRadio->setTxGain(mRadio->maxTxGain() - atten);
   atten -= (-HWatten);
   if (atten < 1.0)
     powerScaling = 1.0;