From 7463bc1a5eceb8a98ea801d223307e9ecfed5bb5 Mon Sep 17 00:00:00 2001
From: Thomas Morris <tmorris@bnl.gov>
Date: Thu, 10 Aug 2023 11:23:43 -0400
Subject: [PATCH] enforce read-only for RODOF

---
 bloptools/devices.py | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/bloptools/devices.py b/bloptools/devices.py
index 1b669c2..a203eaf 100644
--- a/bloptools/devices.py
+++ b/bloptools/devices.py
@@ -6,6 +6,10 @@
 DEFAULT_BOUNDS = (-5.0, +5.0)
 
 
+class ReadOnlyError(Exception):
+    ...
+
+
 class DOF(Signal):
     """
     Degree of freedom
@@ -20,7 +24,11 @@ class RODOF(DOF):
     Read-only degree of freedom
     """
 
-    ...
+    def put(self, value, *, timestamp=None, force=False):
+        raise ReadOnlyError(f'Cannot put, DOF "{self.name}" is read-only!')
+
+    def set(self, value, *, timestamp=None, force=False):
+        raise ReadOnlyError(f'Cannot set, DOF "{self.name}" is read-only!')
 
 
 class BrownianMotion(RODOF):