Add an empty read after each send_cmd if a simulator was detected.

pytabor/pytabor16.py

@@ -38,7 +38,7 @@ import numpy as np
 from pyvisa import ResourceManager
 import pyvisa.constants as vc
 
-__version__    = '1.0.1'
+__version__    = '1.0.2'
 __revision__   = '$Rev: 4238 $'
 __docformat__  = 'reStructuredText'
 

teawg/__init__.py

@@ -356,6 +356,8 @@ class TEWXAwg(object):
         if self._instr_addr is not None:
             self.open()
 
+        self._simulator_read_workaround = self.is_simulator
+
     def __enter__(self):
         return self
 
@@ -474,6 +476,11 @@ class TEWXAwg(object):
             paranoia_level = self._paranoia_level
 
         pytabor.send_cmd(self._visa_inst, cmd_str, paranoia_level)
+        if self._simulator_read_workaround and paranoia_level == 0:
+            empty_str = self._visa_inst.read()
+            assert empty_str == '', ("This workaround expects an empty response after each command that is not a query."
+                                     " The simulator does this in some versions. It is controlled by the attribute "
+                                     "_simulator_read_workaround. Actual response was: %r" % empty_str)
 
     def send_query(self, query_str):
         '''Send the given query to the instrument and read the response