uhd: enable automatic alignment updates

Overnight testing shows that this shouldn't be required
in the majority of cases, but shit happens. Enabling
this forces transmit timing realignment at one minute
intervals. As a fallback method, timing slips not
caught by normal checks will be reset at the update.

Signed-off-by: Thomas Tsou <ttsou@vt.edu>

public-trunk/Transceiver/UHDDevice.cpp

@@ -596,7 +596,7 @@ int uhd_device::writeSamples(short *buf, int len, bool *underrun,
 
 bool uhd_device::updateAlignment(TIMESTAMP timestamp)
 {
-	/* NOP */
+	aligned = false;
 	return true;
 }
 

public-trunk/Transceiver52M/UHDDevice.cpp

@@ -596,7 +596,7 @@ int uhd_device::writeSamples(short *buf, int len, bool *underrun,
 
 bool uhd_device::updateAlignment(TIMESTAMP timestamp)
 {
-	/* NOP */
+	aligned = false;
 	return true;
 }