Merge pull request #145 from punkkeks/master

Add 'filename' attribute to traceSignals

doc/source/manual/reference.rst

@@ -90,6 +90,11 @@ Waveform tracing
       This attribute is used to set the directory to which VCD files are written. By
       default, the current working directory is used.
 
+   .. attribute:: filename
+
+      This attribute is used to set the filename to which VCD files are written. By
+      default, the name attribbute is used.
+
    .. attribute:: timescale
 
       This attribute is used to set the timescale corresponding to unit steps,

myhdl/_traceSignals.py

@@ -50,13 +50,15 @@ class _TraceSignalsClass(object):
 
     __slot__ = ("name",
                 "directory",
+                "filename",
                 "timescale",
                 "tracelists"
                 )
 
     def __init__(self):
         self.name = None
         self.directory = None
+        self.filename = None
         self.timescale = "1ns"
         self.tracelists = True
 
@@ -89,8 +91,13 @@ def __call__(self, dut, *args, **kwargs):
             else:
                 directory = self.directory
 
+            if self.filename is None:
+                filename = name
+            else:
+                filename = str(self.filename)
+
             h = _HierExtr(name, dut, *args, **kwargs)
-            vcdpath = os.path.join(directory, name + ".vcd")
+            vcdpath = os.path.join(directory, filename + ".vcd")
             if path.exists(vcdpath):
                 backup = vcdpath + '.' + str(path.getmtime(vcdpath))
                 shutil.copyfile(vcdpath, backup)