start on chiller control stuff

python/lsst/ts/observatory/control/auxtel/atcalsys.py

@@ -25,11 +25,12 @@ class ATCalsys(BaseCalsys, HardcodeCalsysThroughput):
     CHANGE_GRATING_TIME: Quantity[un.physical.time] = 60 << un.s
 
     # these below numbers should be able to be loaded from a (fairly static) config!
-    GRATING_CHANGEOVER_WL: Quantity[un.physical.length] = (
-        532.0 << un.nm
-    )  # WARNING: PLACEHOLDER VALUE!!!
+    GRATING_CHANGEOVER_WL: Quantity[un.physical.length] =  532.0 << un.nm
     GRATING_CHANGEOVER_BW: Quantity[un.physical.length] = 55.0 << un.nm  # WARNING! PLACEHOLDER VALUE!!!
 
+    CHILLER_COOLDOWN_TIMEOUT: Quantity[un.physical.time] = (60 * 15 ) << un.s
+    CHILLER_SETPOINT_TEMP: Quantity[un.physical.temperature] = 20 << un.C
+
     def __init__(self, **kwargs):
         super().__init__(self._AT_SAL_COMPONENTS, **kwargs)
         self._specsposure_time: Optional[float] = None
@@ -74,16 +75,14 @@ async def setup_for_wavelength(
             [monoch_fut, elect_fut, elect_fut2], return_when=asyncio.ALL_COMPLETED
         )
         self.log.debug("all SAL setup commands returned")
-
         specsposure_time = self.spectrograph_exposure_time_for_nelectrons(nelec)
-
         return
 
     def calculate_slit_width(self, spectral_res: float, grating) -> ATSpectrographSlits:
         # NOTE: this will either need to be derived by doing calculations on the Grating equation, or by loading in calibration data (which I couldn't find yet!)
         pass
 
-    def calculate_grating_type(self, wavelen: float, spectral_res: float):
+    def calculate_grating_type(self, wavelen: float, spectral_res: float) -> ATMonochromator.Grating:
         # TODO: placeholder logic, in particular the exact numbers will be WRONG!
         # likely something like the below
         if spectral_res > self.GRATING_CHANGEOVER_BW:
@@ -126,18 +125,19 @@ async def turn_on_light(self, lamp_power: Quantity["power"]) -> None:
         #turn on lamp and let it warm up
         await self._sal_cmd_helper("ATWhiteLight", "turnLampOn", power=power_watts)
 
-
-
-
 
     async def wait_ready(self) -> None:
         #in the case of auxtel, need to wait for lamp to have warmed up
         #check that lamp state
         lamp_state = await self._sal_readvalue_helper("ATWhiteLight", "lampState")
-        if lamp_state == ATWhiteLiht.LampBasicState.On:
+        if lamp_state == ATWhiteLight.LampBasicState.On:
             return
 
         if lamp_state not in {ATWhiteLight.LampBasicState.Warmup, ATWhiteLight.LampBasicState.TurningOn}:
             raise RuntimeError("unexpected lamp state when waiting for readiness!")
 
-
+
+    async def _chiller_setup(self, turnon: bool=True):
+        await self._sal_cmd_helper("ATWhiteLight", "setChillerTemperature", temperature = 
+        if turnon:
+            await self._sal_cmd_helper("ATWhiteLight", "startChiller")