support device wavelengths

Author: rickwierenga

pylabrobot/plate_reading/byonoy.py

@@ -274,15 +274,16 @@ async def read_absorbance(self, plate: Plate, wavelength: int) -> List[List[floa
         f"Wavelength {wavelength} nm is not supported by this plate reader. "
         f"Available wavelengths: {available_wavelengths}"
       )
+    wavelength_b = struct.pack("<H", wavelength)
 
     await self.send_command(bytes.fromhex("0000030000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000040"))
-    await self.send_command(bytes.fromhex("0020035802000001000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000040"))
+    await self.send_command(bytes.fromhex("002003") + wavelength_b  + bytes.fromhex("000001000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000040"))
     # first b"Received REP_ABS_TRIGGER_MEASUREMENT_OUT" response
     await self.send_command(bytes.fromhex("0040000100000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000008040"))
     await self.send_command(bytes.fromhex("0000030000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000040"))
     await self.send_command(bytes.fromhex("0000030000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000040"))
     await self.send_command(bytes.fromhex("0000020700000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000008040"))
-    await self.send_command(bytes.fromhex("0020035802000000010000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000040"))
+    await self.send_command(bytes.fromhex("002003") + wavelength_b + bytes.fromhex("000000010000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000040"))
     await self.send_command(bytes.fromhex("0040000100000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000008040"), wait_for_response=False)
     self._stop_background_pings()