Wait 2s after enabling FPGA_processing_enable_RW

README.md

@@ -161,6 +161,8 @@ Next change the version in the following places:
 
 # Release Notes
 
+* 0.38.2 Fixed polling of some attributes required by Metadata device
+         Wait 2s after enabling FPGA_processing_enable_RW to allow it to propagate
 * 0.38.1 Custom compiled casacore for improved beam-tracking performance
 * 0.38.0 Add metadata device publishing zmq events
 * 0.37.2 Improved event-subscription interface, avoid overlap between polling loops.

tangostationcontrol/VERSION

-0.38.1
+0.38.2

tangostationcontrol/tangostationcontrol/devices/base_device_classes/lofar_device.py

@@ -785,6 +785,10 @@ class LOFARDevice(Device):
     @debugit()
     @log_exceptions()
     def set_defaults(self):
+        # Defer to undecorated version that might be overloaded
+        self._set_defaults()
+
+    def _set_defaults(self):
         """Set hardware points to their default value.
 
         A hardware point XXX is set to the value of the object member named XXX_default,

tangostationcontrol/tangostationcontrol/devices/sdp/sdp.py

@@ -4,6 +4,7 @@
 """ SDP Device Server for LOFAR2.0
 
 """
+import time
 from typing import Dict, List, Tuple
 
 import numpy
@@ -566,6 +567,13 @@ class SDP(OPCUADevice):
         except ZeroDivisionError:
             return 1.0
 
+    def _set_defaults(self):
+        super()._set_defaults()
+
+        # wait 2s for the BSN to propagate through the FPGAs after
+        # enabling FPGA_processing_enable_RW.
+        time.sleep(2.0)
+
     def configure_for_initialise(self):
         super().configure_for_initialise()