minor cleanups

artiq/language/core.py

@@ -330,8 +330,6 @@ def syscall(*args):
 
 _encoded_exceptions = dict()
 
-first_user_eid = 1024
-
 
 def EncodedException(eid):
     """Represents exceptions on the core device, which are identified
@@ -346,3 +344,6 @@ def EncodedException(eid):
                 Exception.__init__(self, eid)
         _encoded_exceptions[eid] = EncodedException
         return EncodedException
+
+
+first_user_eid = 1024

artiq/transforms/lower_units.py

@@ -1,7 +1,6 @@
 import ast
 
 from artiq.transforms.tools import value_to_ast
-from artiq.language import units
 
 
 # TODO:
@@ -41,7 +40,4 @@ class _UnitsLowerer(ast.NodeTransformer):
 
 
 def lower_units(func_def, ref_period):
-    if (not isinstance(ref_period, units.Quantity)
-            or ref_period.unit is not units.s_unit):
-        raise units.DimensionError("Reference period not expressed in seconds")
     _UnitsLowerer(ref_period.amount).visit(func_def)

test/full_stack.py

@@ -105,7 +105,7 @@ class _RTIOUnderflow(AutoContext):
 
     @kernel
     def run(self):
-        for i in range(10000):
+        while True:
             delay(25*ns)
             self.o.pulse(25*ns)