1 files changed, 20 insertions, 0 deletions
diff --git a/app/Sensor.hs b/app/Sensor.hs
index 612b2bc..b6cfba5 100644
--- a/app/Sensor.hs
+++ b/app/Sensor.hs
@@ -26,6 +26,7 @@ module Sensor
     Sensor.snd,
     disk,
     date,
+    thermal,
     time,
     wmName,
     weatherForecast,
@@ -116,6 +117,25 @@ diagram n sf = S.feedbackS [] $ proc ((), xs) -> do
   x <- sf -< ()
   returnA -< (P.diagram n (reverse (x : xs)), take (2 * (n - 1) + 1) (x : xs))
 
+data Thermal = Thermal deriving (Show)
+
+instance (S.MonadSensor m) => S.Aggregate m Thermal Int where
+  aggregate _ = forever do S.yield =<< parse <* sleep
+    where
+      parse = liftIO do
+        is <- listDirectory "/sys/class/thermal"
+        maximum <$> mapM (parse1 . ("/sys/class/thermal" </>)) is
+      parse1 fp = do
+        (choice 0 [readFile (fp </> "temp") (pure . read . strip)])
+
+thermal :: (S.MonadSensor m) => S.Sensor m () String
+thermal = do
+  temp <- S.sensor Thermal
+  pure (printf "%.1f" (value temp))
+  where
+    value :: Int -> Float
+    value temp = fromIntegral temp / 1000.0
+
 data IoStat = IoStat deriving (Show)
 
 instance (S.MonadSensor m) => S.Aggregate m IoStat Int where