fix: Swapped Pcap.Arm to a RW for ophyd-async

Author: evvaaaa

src/fastcs_pandablocks/panda/blocks/blocks.py

@@ -26,7 +26,7 @@
 
 from fastcs_pandablocks.panda.client_wrapper import RawPanda
 from fastcs_pandablocks.panda.handlers import (
-    ArmSender,
+    ArmHandler,
     BitGroupOnUpdate,
     CaptureHandler,
     DefaultFieldHandler,
@@ -132,10 +132,10 @@ async def _add_pcap_arm(self):
 
         pcap_block.add_attribute(
             pcap_name + PandaName(field="Arm"),
-            AttrW(
-                Enum(ArmSender.ArmCommand),
+            AttrRW(
+                Enum(ArmHandler.ArmCommand),
                 description="Arm/Disarm the PandA.",
-                handler=ArmSender(self._raw_panda.arm, self._raw_panda.disarm),
+                handler=ArmHandler(self._raw_panda.arm, self._raw_panda.disarm),
                 group=WidgetGroup.CAPTURE.value,
             ),
         )

src/fastcs_pandablocks/panda/handlers.py

@@ -143,7 +143,7 @@ async def __call__(self, value: Any):
         )
 
 
-class ArmSender(Sender):
+class ArmHandler(Handler):
     """A sender for arming and disarming the Pcap."""
 
     class ArmCommand(enum.Enum):
@@ -167,3 +167,6 @@ async def put(
         else:
             logging.info("Disarming PandA.")
             await self.disarm()
+
+    async def update(self, controller: Any, attr: AttrR[ArmCommand]) -> None:
+        pass