From 1a31573eb8b6a6c02536279d77f6232981155958 Mon Sep 17 00:00:00 2001
From: Matthias Schiffer <matthias@gamezock.de>
Date: Sat, 10 Apr 2010 15:17:23 +0200
Subject: Added support for calibration

---
 src/HWiid.hsc | 62 +++++++++++++++++++++++++++++++++++++++++++++++++----------
 1 file changed, 52 insertions(+), 10 deletions(-)

diff --git a/src/HWiid.hsc b/src/HWiid.hsc
index 91b4ec8..46340b3 100644
--- a/src/HWiid.hsc
+++ b/src/HWiid.hsc
@@ -4,8 +4,11 @@ module HWiid ( BDAddr(..)
              , Wiimote
              , WiimoteIRSource(..)
              , WiimoteState(..)
+             , WiimoteExtType
              , WiimoteExtState(..)
+             , WiimoteMesgType
              , WiimoteMesg(..)
+             , WiimoteAccCal(..)
              , nullWiimote
              , bdAddrAny
              , hwiidFlagMesgInterface
@@ -46,6 +49,7 @@ module HWiid ( BDAddr(..)
              , hwiidSetReportMode
              , hwiidSetLed
              , hwiidGetMesg
+             , hwiidGetAccCal
              ) where
 
 
@@ -150,17 +154,21 @@ hwiidIRMaxY :: CInt
 hwiidIRMaxY = (#const CWIID_IR_Y_MAX)
 
 
-hwiidMesgTypeStatus :: (#type enum cwiid_mesg_type)
+type WiimoteMesgType = (#type enum cwiid_mesg_type)
+
+hwiidMesgTypeStatus :: WiimoteMesgType
 hwiidMesgTypeStatus = (#const CWIID_MESG_STATUS)
 
-hwiidMesgTypeButton :: (#type enum cwiid_mesg_type)
+hwiidMesgTypeButton :: WiimoteMesgType
 hwiidMesgTypeButton = (#const CWIID_MESG_BTN)
 
 
-hwiidExtNone :: (#type enum cwiid_ext_type)
+type WiimoteExtType = (#type enum cwiid_ext_type)
+
+hwiidExtNone :: WiimoteExtType
 hwiidExtNone = (#const CWIID_EXT_NONE)
 
-hwiidExtNunchuk :: (#type enum cwiid_ext_type)
+hwiidExtNunchuk :: WiimoteExtType
 hwiidExtNunchuk = (#const CWIID_EXT_NUNCHUK)
 
 
@@ -244,15 +252,15 @@ instance Storable WiimoteState where
     poke _ _ = fail "Can't write WiimoteState"
 
 data WiimoteMesg = WiimoteStatusMesg
-    { mesgType          :: (#type enum cwiid_mesg_type)
+    { mesgType          :: WiimoteMesgType
     , mesgBattery       :: Word8
     }
                  | WiimoteButtonMesg
-    { mesgType          :: (#type enum cwiid_mesg_type)
+    { mesgType          :: WiimoteMesgType
     , mesgButtons       :: Word16
     }
                  | WiimoteMesgOther
-    { mesgType          :: (#type enum cwiid_mesg_type)
+    { mesgType          :: WiimoteMesgType
     }
                    deriving (Eq, Show)
 
@@ -277,17 +285,17 @@ instance Storable WiimoteMesg where
 
 
 data WiimoteExtState = WiimoteNunchukState
-    { extType           :: (#type enum cwiid_ext_type)
+    { extType           :: WiimoteExtType
     , extNunchukStickX  :: Word8
     , extNunchukStickY  :: Word8
     , extNunchukButtons :: Word8
     }
                      | WiimoteOtherState
-    { extType           :: (#type enum cwiid_ext_type)
+    { extType           :: WiimoteExtType
     }
                        deriving (Eq, Show)
 
-peekExtState :: (#type enum cwiid_ext_type) -> Ptr WiimoteExtState -> IO WiimoteExtState
+peekExtState :: WiimoteExtType -> Ptr WiimoteExtState -> IO WiimoteExtState
 peekExtState exttype state
     | exttype == hwiidExtNunchuk = do
   posx <- (#peek struct nunchuk_state, stick[0]) state
@@ -295,6 +303,33 @@ peekExtState exttype state
   buttons <- (#peek struct nunchuk_state, buttons) state
   return $ WiimoteNunchukState exttype posx posy buttons
     | otherwise = return $ WiimoteOtherState exttype
+
+
+data WiimoteAccCal = WiimoteAccCal
+    { accCalZeroX :: Word8
+    , accCalZeroY :: Word8
+    , accCalZeroZ :: Word8
+    , accCalOneX  :: Word8
+    , accCalOneY  :: Word8
+    , accCalOneZ  :: Word8
+    }
+                     deriving (Eq, Show)
+
+instance Storable WiimoteAccCal where
+    sizeOf _ = (#size struct acc_cal)
+    alignment _ = alignment (undefined :: CInt)
+    
+    peek cal = do
+      zerox <- (#peek struct acc_cal, zero[0]) cal
+      zeroy <- (#peek struct acc_cal, zero[1]) cal
+      zeroz <- (#peek struct acc_cal, zero[2]) cal
+      onex <- (#peek struct acc_cal, one[0]) cal
+      oney <- (#peek struct acc_cal, one[1]) cal
+      onez <- (#peek struct acc_cal, one[2]) cal
+      
+      return $ WiimoteAccCal zerox zeroy zeroz onex oney onez
+    
+    poke _ _ = fail "Can't write WiimoteAccCal"
     
 
 newtype Wiimote = Wiimote (Ptr Wiimote) deriving (Eq, Ord, Show, Storable)
@@ -346,3 +381,10 @@ hwiidGetMesg wiimote = alloca $ \countptr -> alloca $ \arrayptr -> alloca $ \tim
                            free array
                            return list
                                        else return []
+foreign import ccall unsafe "cwiid.h cwiid_get_acc_cal"
+        cwiid_get_acc_cal :: Wiimote -> WiimoteExtType -> Ptr WiimoteAccCal -> IO CInt
+
+hwiidGetAccCal wiimote exttype = alloca $ \calptr -> do
+                                   cwiid_get_acc_cal wiimote exttype calptr
+                                   cal <- peek calptr
+                                   return cal
-- 
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