From 6e96cdf9ea2f87b54bcf77bef2c2d10b7453361d Mon Sep 17 00:00:00 2001
From: Matthias Schiffer <matthias@gamezock.de>
Date: Thu, 8 Apr 2010 15:59:19 +0200
Subject: Added nunchuk support

---
 src/HWiid.hsc | 59 +++++++++++++++++++++++++++++++++++++++++++++++++----------
 1 file changed, 49 insertions(+), 10 deletions(-)

(limited to 'src')

diff --git a/src/HWiid.hsc b/src/HWiid.hsc
index 9a4bb2f..07a3a48 100644
--- a/src/HWiid.hsc
+++ b/src/HWiid.hsc
@@ -4,6 +4,7 @@ module HWiid ( BDAddr(..)
              , Wiimote
              , WiimoteIRSource(..)
              , WiimoteState(..)
+             , WiimoteExtState(..)
              , WiimoteMesg(..)
              , nullWiimote
              , bdAddrAny
@@ -12,6 +13,8 @@ module HWiid ( BDAddr(..)
              , hwiidReportStatus
              , hwiidReportButtons
              , hwiidReportIR
+             , hwiidReportNunchuk
+             , hwiidReportExt
              , hwiidLed1
              , hwiidLed2
              , hwiidLed3
@@ -31,6 +34,8 @@ module HWiid ( BDAddr(..)
              , hwiidNunchukButtonC
              , hwiidMesgTypeStatus
              , hwiidMesgTypeButton
+             , hwiidExtNone
+             , hwiidExtNunchuk
              , hwiidOpen
              , hwiidOpenTimeout
              , hwiidClose
@@ -71,6 +76,12 @@ hwiidReportButtons = (#const CWIID_RPT_BTN)
 hwiidReportIR :: Word8
 hwiidReportIR = (#const CWIID_RPT_IR)
 
+hwiidReportNunchuk :: Word8
+hwiidReportNunchuk = (#const CWIID_RPT_NUNCHUK)
+
+hwiidReportExt :: Word8
+hwiidReportExt = hwiidReportNunchuk
+
 
 hwiidLed1 :: Word8
 hwiidLed1 = (#const CWIID_LED1_ON)
@@ -133,6 +144,12 @@ hwiidMesgTypeButton :: (#type enum cwiid_mesg_type)
 hwiidMesgTypeButton = (#const CWIID_MESG_BTN)
 
 
+hwiidExtNone :: (#type enum cwiid_ext_type)
+hwiidExtNone = (#const CWIID_EXT_NONE)
+
+hwiidExtNunchuk :: (#type enum cwiid_ext_type)
+hwiidExtNunchuk = (#const CWIID_EXT_NUNCHUK)
+
 
 data BDAddr = BDAddr (Word8, Word8, Word8, Word8, Word8, Word8)
               deriving (Eq, Ord, Show)
@@ -188,6 +205,7 @@ data WiimoteState = WiimoteState
     , stateBattery   :: Word8
     , stateButtons   :: Word16
     , stateIRSources :: [WiimoteIRSource]
+    , stateExt       :: WiimoteExtState
     } deriving (Eq, Show)
 
 instance Storable WiimoteState where
@@ -195,25 +213,26 @@ instance Storable WiimoteState where
     alignment _ = alignment (undefined :: CInt)
     
     peek state = do
-      led     <- (#peek struct cwiid_state, led) state
-      rumble  <- (#peek struct cwiid_state, rumble) state
-      battery <- (#peek struct cwiid_state, battery) state
-      buttons <- (#peek struct cwiid_state, buttons) state
+      led       <- (#peek struct cwiid_state, led) state
+      rumble    <- (#peek struct cwiid_state, rumble) state
+      battery   <- (#peek struct cwiid_state, battery) state
+      buttons   <- (#peek struct cwiid_state, buttons) state
       irSources <- peekArray (#const CWIID_IR_SRC_COUNT) $ (#ptr struct cwiid_state, ir_src) state
-      return $ WiimoteState led rumble battery buttons (filter (\src -> (irValid src) /= 0) irSources)
+      exttype   <- (#peek struct cwiid_state, ext_type) state
+      extstate  <- peekExtState exttype $ (#ptr struct cwiid_state, ext) state
+      return $ WiimoteState led rumble battery buttons (filter (\src -> (irValid src) /= 0) irSources) extstate
     
     poke _ _ = fail "Can't write WiimoteState"
 
 data WiimoteMesg = WiimoteStatusMesg
     { mesgType          :: (#type enum cwiid_mesg_type)
     , mesgBattery       :: Word8
-    , mesgExtensionType :: (#type enum cwiid_ext_type)
     }
                  | WiimoteButtonMesg
     { mesgType          :: (#type enum cwiid_mesg_type)
     , mesgButtons       :: Word16
     }
-                 | WiimoteMesgUnknown
+                 | WiimoteMesgOther
     { mesgType          :: (#type enum cwiid_mesg_type)
     }
                    deriving (Eq, Show)
@@ -228,17 +247,37 @@ instance Storable WiimoteMesg where
       case () of
          _ | mesgtype == hwiidMesgTypeStatus -> do
                                 battery <- (#peek struct cwiid_status_mesg, battery) mesg
-                                exttype <- (#peek struct cwiid_status_mesg, ext_type) mesg
-                                return $ WiimoteStatusMesg mesgtype battery exttype
+                                return $ WiimoteStatusMesg mesgtype battery
            | mesgtype == hwiidMesgTypeButton -> do
                                 buttons <- (#peek struct cwiid_btn_mesg, buttons) mesg
                                 return $ WiimoteButtonMesg mesgtype buttons
-           | otherwise -> return $ WiimoteMesgUnknown mesgtype
+           | otherwise -> return $ WiimoteMesgOther mesgtype
                                     
     
     poke _ _ = fail "Can't write WiimoteMesg"
 
 
+data WiimoteExtState = WiimoteNunchukState
+    { extType           :: (#type enum cwiid_ext_type)
+    , extNunchukStickX  :: Word8
+    , extNunchukStickY  :: Word8
+    , extNunchukButtons :: Word8
+    }
+                     | WiimoteOtherState
+    { extType           :: (#type enum cwiid_ext_type)
+    }
+                       deriving (Eq, Show)
+
+peekExtState :: (#type enum cwiid_ext_type) -> Ptr WiimoteExtState -> IO WiimoteExtState
+peekExtState exttype state
+    | exttype == hwiidExtNunchuk = do
+  posx <- (#peek struct nunchuk_state, stick[0]) state
+  posy <- (#peek struct nunchuk_state, stick[1]) state
+  buttons <- (#peek struct nunchuk_state, buttons) state
+  return $ WiimoteNunchukState exttype posx posy buttons
+    | otherwise = return $ WiimoteOtherState exttype
+    
+
 newtype Wiimote = Wiimote (Ptr Wiimote) deriving (Eq, Ord, Show, Storable)
 
 
-- 
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