fixes for uniax device

secop/core.py

@@ -37,4 +37,5 @@ from secop.poller import AUTO, DYNAMIC, REGULAR, SLOW
 from secop.properties import Property
 from secop.proxy import Proxy, SecNode, proxy_class
 from secop.stringio import HasIodev, StringIO
+from secop.bytesio import BytesIO
 from secop.persistent import PersistentMixin, PersistentParam

secop/lib/asynconn.py

@@ -251,7 +251,9 @@ class AsynSerial(AsynConn):
             if not fullname.startswith(name):
                 raise ConfigError('illegal parity: %s' % parity)
             options['parity'] = name[0]
-        if 'timeout' not in options:
+        if 'timeout' in options:
+            options['timeout'] = float(self.timeout)
+        else:
             options['timeout'] = self.timeout
         try:
             self.connection = Serial(dev, **options)

secop/persistent.py

@@ -92,7 +92,7 @@ class PersistentMixin(HasAccessibles):
         try:
             with open(self.persistentFile, 'r') as f:
                 self.persistentData = json.load(f)
-        except FileNotFoundError:
+        except Exception:
             self.persistentData = {}
         writeDict = {}
         for pname in self.parameters: