hcwiid- Library to interface with the wiimote

CopyrightKiwamu Okabe Ivan Perez and the cwiid team
Safe HaskellSafe




Bindings for the cwiid library, a working userspace driver along with various applications implementing event drivers, multiple Wiimote connectivity, gesture recognition, and other Wiimote-based functionality.

The current implementation is rather incomplete. In particular:

  • Some Haskell functions (those related to rpt mode, rumble, leds) had hard-coded values in them. Therefore, they implemented only a very partial interface to their C counterparts. The new versions should be tested and, if any other function is like this, then exported properly.
  • Not all functions/wiimote fields are accessible. In particular, acceleromoter and IR is in testing stage. Nunchuck, calibration, wiimote plus are not handled at all (but will be in the future).

All in all, the code works quite well and is currently being used to implement several real games.



cwiidOpen :: IO (Maybe CWiidWiimote) Source #

Try to establish a connection to any existing Wiimote using any existing bluetooth interface.

The function returns Nothing if there is no bluetooth interface or if no wiimote can be located. If the connection succeeds, a CWiidWiimote is returned (inside a Just), which can be used to poll the wiimote using other functions.

There is a default timeout of 5 seconds.

  • TODO: export cwiid_open_time and cwiid_close as well.

data CWiidWiimote Source #

A connection to an existing wiimote. Use cwiidOpen to connect to a wiimote and obtain one of these.


data CWiidState Source #

The state of the wiimote. Use cwiidSetRptMode to enable/disable sensors.

  • FIXME: incomplete state
  • FIXME: export get_state




Reception mode

cwiidSetRptMode :: CWiidWiimote -> CUChar -> IO CInt Source #

Enable/disable reception of certain sensors. Use 2 to enable buttons.


cwiidLed1 :: CWiidLedFlag Source #

Flag with exactly led 1 enabled. Use combineCwiidLedFlag to create flags with several leds enabled.

cwiidLed2 :: CWiidLedFlag Source #

Flag with exactly led 2 enabled. Use combineCwiidLedFlag to create flags with several leds enabled.

cwiidLed3 :: CWiidLedFlag Source #

Flag with exactly led 2 enabled. Use combineCwiidLedFlag to create flags with several leds enabled.

cwiidLed4 :: CWiidLedFlag Source #

Flag with exactly led 4 enabled. Use combineCwiidLedFlag to create flags with several leds enabled.

Led operations

cwiidSetLed :: CWiidWiimote -> CWiidLedFlag -> IO CInt Source #

Enable/disable certain leds.

Use cwiidLed1 .. cwiidLed4 together with combineCwiidLedFlag to create a flag with just the leds you want enabled and change all at once with one operation.

combineCwiidLedFlag :: [CWiidLedFlag] -> CWiidLedFlag Source #

Combine several led flags into one led flag with those leds enabled and all other leds disabled.



cwiidGetBtnState :: CWiidWiimote -> IO CWiidBtnFlag Source #

Returns a mask with the buttons that are currently pushed.

cwiidIsBtnPushed Source #


:: CWiidBtnFlag

The button flags as returned by cwiidGetBtnState.

-> CWiidBtnFlag

A mask that flags the button/s that we want to check.

-> Bool

True if they are all pushed, False otherwise.

Returns True if the button indicated by the flag is pushed, False otherwise.

This is a pure function, so the first argument must be the button flags as returned by cwiidGetBtnState.


cwiidGetAcc :: CWiidWiimote -> IO CWiidAcc Source #

Obtain accelerometer information. FIXME: read wmgui/main.c:cwiid_acc(1119) to understand how to use this information, what else might need to be exported, and how to calibrate the accelerometers.

newtype CWiidAcc Source #

Array of accelerometer information. It will always contain exactly three elements.

  • TODO: provide a more informative and restrictive interface with exactly three named Int (byte?) fields.





data CWiidIRSrc Source #

Internal representation of an infrared point. You should no use it unless you know what you are doing; use CWiidIR instead.