Copyright	(c) 2009–2017 Bas van Dijk
License	BSD3 (see the file LICENSE)
Maintainer	Bas van Dijk <v.dijk.bas@gmail.com>
Safe Haskell	Trustworthy
Language	Haskell98

System.USB.Misc

Contents

Capabilties of libusb
Version of libusb

Description

This module provides miscellaneous functionality.

Synopsis

Capabilties of `libusb`

data Capability #

Capabilities supported by an instance of libusb on the current running platform.

Test if the loaded libusb library supports a given capability by calling hasCapability.

Constructors

HasCapability	The `hasCapability` API is available.
HasHotplug	Hotplug support is available on this platform.
HasHidAccess	The library can access HID devices without requiring user intervention. Note that before being able to actually access an HID device, you may still have to call additional `libusb` functions such as `detachKernelDriver`.
SupportsDetachKernelDriver	The library supports detaching of the default USB driver, using `detachKernelDriver`, if one is set by the OS kernel.

Instances

Enum Capability #
Methods succ :: Capability -> Capability # pred :: Capability -> Capability # toEnum :: Int -> Capability # fromEnum :: Capability -> Int # enumFrom :: Capability -> [Capability] # enumFromThen :: Capability -> Capability -> [Capability] # enumFromTo :: Capability -> Capability -> [Capability] # enumFromThenTo :: Capability -> Capability -> Capability -> [Capability] #
Eq Capability #
Methods (==) :: Capability -> Capability -> Bool # (/=) :: Capability -> Capability -> Bool #
Data Capability #
Methods gfoldl :: (forall d b. Data d => c (d -> b) -> d -> c b) -> (forall g. g -> c g) -> Capability -> c Capability # gunfold :: (forall b r. Data b => c (b -> r) -> c r) -> (forall r. r -> c r) -> Constr -> c Capability # toConstr :: Capability -> Constr # dataTypeOf :: Capability -> DataType # dataCast1 :: Typeable (* -> ) t => (forall d. Data d => c (t d)) -> Maybe (c Capability) # dataCast2 :: Typeable ( -> * -> *) t => (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c Capability) # gmapT :: (forall b. Data b => b -> b) -> Capability -> Capability # gmapQl :: (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> Capability -> r # gmapQr :: (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> Capability -> r # gmapQ :: (forall d. Data d => d -> u) -> Capability -> [u] # gmapQi :: Int -> (forall d. Data d => d -> u) -> Capability -> u # gmapM :: Monad m => (forall d. Data d => d -> m d) -> Capability -> m Capability # gmapMp :: MonadPlus m => (forall d. Data d => d -> m d) -> Capability -> m Capability # gmapMo :: MonadPlus m => (forall d. Data d => d -> m d) -> Capability -> m Capability #
Ord Capability #
Methods compare :: Capability -> Capability -> Ordering # (<) :: Capability -> Capability -> Bool # (<=) :: Capability -> Capability -> Bool # (>) :: Capability -> Capability -> Bool # (>=) :: Capability -> Capability -> Bool # max :: Capability -> Capability -> Capability # min :: Capability -> Capability -> Capability #
Read Capability #
Methods readsPrec :: Int -> ReadS Capability # readList :: ReadS [Capability] # readPrec :: ReadPrec Capability # readListPrec :: ReadPrec [Capability] #
Show Capability #
Methods showsPrec :: Int -> Capability -> ShowS # show :: Capability -> String # showList :: [Capability] -> ShowS #
Generic Capability #
Associated Types type Rep Capability :: * -> * # Methods from :: Capability -> Rep Capability x # to :: Rep Capability x -> Capability #
type Rep Capability #
type Rep Capability = D1 (MetaData "Capability" "System.USB.Base" "usb-1.3.0.5-H7hR0jrsbwx1lnm5IeYQBc" False) ((:+:) ((:+:) (C1 (MetaCons "HasCapability" PrefixI False) U1) (C1 (MetaCons "HasHotplug" PrefixI False) U1)) ((:+:) (C1 (MetaCons "HasHidAccess" PrefixI False) U1) (C1 (MetaCons "SupportsDetachKernelDriver" PrefixI False) U1)))

hasCapability :: Ctx -> Capability -> Bool #

Check at runtime if the loaded libusb library has a given capability.

This call should be performed after newCtx, to ensure the backend has updated its capability set. For this reason you need to apply it to a Ctx.

Version of `libusb`

data LibusbVersion #

Structure providing the version of the libusb runtime.

Constructors

LibusbVersion
Fields major :: Word16 Library major version. minor :: Word16 Library minor version. micro :: Word16 Library micro version. nano :: Word16 Library nano version. rc :: String Library release candidate suffix string, e.g. `"-rc4"`.

Instances

Eq LibusbVersion #
Methods (==) :: LibusbVersion -> LibusbVersion -> Bool # (/=) :: LibusbVersion -> LibusbVersion -> Bool #
Data LibusbVersion #
Methods gfoldl :: (forall d b. Data d => c (d -> b) -> d -> c b) -> (forall g. g -> c g) -> LibusbVersion -> c LibusbVersion # gunfold :: (forall b r. Data b => c (b -> r) -> c r) -> (forall r. r -> c r) -> Constr -> c LibusbVersion # toConstr :: LibusbVersion -> Constr # dataTypeOf :: LibusbVersion -> DataType # dataCast1 :: Typeable (* -> ) t => (forall d. Data d => c (t d)) -> Maybe (c LibusbVersion) # dataCast2 :: Typeable ( -> * -> *) t => (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c LibusbVersion) # gmapT :: (forall b. Data b => b -> b) -> LibusbVersion -> LibusbVersion # gmapQl :: (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> LibusbVersion -> r # gmapQr :: (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> LibusbVersion -> r # gmapQ :: (forall d. Data d => d -> u) -> LibusbVersion -> [u] # gmapQi :: Int -> (forall d. Data d => d -> u) -> LibusbVersion -> u # gmapM :: Monad m => (forall d. Data d => d -> m d) -> LibusbVersion -> m LibusbVersion # gmapMp :: MonadPlus m => (forall d. Data d => d -> m d) -> LibusbVersion -> m LibusbVersion # gmapMo :: MonadPlus m => (forall d. Data d => d -> m d) -> LibusbVersion -> m LibusbVersion #
Read LibusbVersion #
Methods readsPrec :: Int -> ReadS LibusbVersion # readList :: ReadS [LibusbVersion] # readPrec :: ReadPrec LibusbVersion # readListPrec :: ReadPrec [LibusbVersion] #
Show LibusbVersion #
Methods showsPrec :: Int -> LibusbVersion -> ShowS # show :: LibusbVersion -> String # showList :: [LibusbVersion] -> ShowS #
Generic LibusbVersion #
Associated Types type Rep LibusbVersion :: * -> * # Methods from :: LibusbVersion -> Rep LibusbVersion x # to :: Rep LibusbVersion x -> LibusbVersion #
type Rep LibusbVersion #
type Rep LibusbVersion = D1 (MetaData "LibusbVersion" "System.USB.Base" "usb-1.3.0.5-H7hR0jrsbwx1lnm5IeYQBc" False) (C1 (MetaCons "LibusbVersion" PrefixI True) ((::) ((::) (S1 (MetaSel (Just Symbol "major") NoSourceUnpackedness NoSourceStrictness DecidedLazy) (Rec0 Word16)) (S1 (MetaSel (Just Symbol "minor") NoSourceUnpackedness NoSourceStrictness DecidedLazy) (Rec0 Word16))) ((::) (S1 (MetaSel (Just Symbol "micro") NoSourceUnpackedness NoSourceStrictness DecidedLazy) (Rec0 Word16)) ((::) (S1 (MetaSel (Just Symbol "nano") NoSourceUnpackedness NoSourceStrictness DecidedLazy) (Rec0 Word16)) (S1 (MetaSel (Just Symbol "rc") NoSourceUnpackedness NoSourceStrictness DecidedLazy) (Rec0 String))))))

libusbVersion :: LibusbVersion #

Returns the version (major, minor, micro, nano and rc) of the loaded libusb library.

toVersion :: LibusbVersion -> Version #

Convert a LibusbVersion to a Version for easy comparison.

Capabilties of libusb

Version of libusb

Capabilties of `libusb`

Version of `libusb`