feat(api): add firmware update support to Plate Reader + fix connect/disconnect issues.

api/src/opentrons/drivers/absorbance_reader/abstract.py

@@ -1,8 +1,9 @@
 from abc import ABC, abstractmethod
-from typing import Dict, List
+from typing import Dict, List, Tuple
 from opentrons.drivers.types import (
     AbsorbanceReaderLidStatus,
     AbsorbanceReaderDeviceState,
+    AbsorbanceReaderPlatePresence,
 )
 
 
@@ -46,3 +47,18 @@ async def get_status(self) -> AbsorbanceReaderDeviceState:
     async def get_device_info(self) -> Dict[str, str]:
         """Get device info"""
         ...
+
+    @abstractmethod
+    async def get_uptime(self) -> int:
+        """Get device uptime"""
+        ...
+
+    @abstractmethod
+    async def get_plate_presence(self) -> AbsorbanceReaderPlatePresence:
+        """Check if there is a plate in the reader."""
+        ...
+
+    @abstractmethod
+    async def update_firmware(self, firmware_file_path: str) -> Tuple[bool, str]:
+        """Updates the firmware on the device."""
+        ...