diff options
author | Paul Oliver <contact@pauloliver.dev> | 2025-09-07 19:23:37 +0000 |
---|---|---|
committer | Paul Oliver <contact@pauloliver.dev> | 2025-09-07 19:49:03 +0000 |
commit | 89aab732dc3d484b99c0761728285bca6f6b1ba0 (patch) | |
tree | e2b4ca6656758dc9f398b9b1de2e6d92670b77df /hsm-gpio | |
parent | ef0713cbd90d6b84da7ea67e6dfc1fe5ab5bff86 (diff) |
Diffstat (limited to 'hsm-gpio')
-rw-r--r-- | hsm-gpio/Hsm/GPIO.hs | 17 | ||||
-rw-r--r-- | hsm-gpio/Hsm/GPIO/FFI.hs | 95 | ||||
-rw-r--r-- | hsm-gpio/Hsm/GPIO/FFI.hsc | 116 |
3 files changed, 125 insertions, 103 deletions
diff --git a/hsm-gpio/Hsm/GPIO.hs b/hsm-gpio/Hsm/GPIO.hs index fcb3a00..31b73d9 100644 --- a/hsm-gpio/Hsm/GPIO.hs +++ b/hsm-gpio/Hsm/GPIO.hs @@ -3,21 +3,22 @@ {-# LANGUAGE TypeFamilies #-} module Hsm.GPIO - ( GPIOPin(..) + ( GPIOPin (..) , GPIO , setPins , setAllPins , runGPIO - ) where + ) +where import Control.Monad (forM_, void) import Control.Monad.Trans.Cont (evalCont) import Data.Vector.Storable (fromList, replicate, unsafeWith) -import Effectful (Dispatch(Static), DispatchOf, Eff, IOE, (:>), liftIO) -import Effectful.Dispatch.Static (SideEffects(WithSideEffects), StaticRep, evalStaticRep, getStaticRep, unsafeEff_) +import Effectful (Dispatch (Static), DispatchOf, Eff, IOE, liftIO, (:>)) +import Effectful.Dispatch.Static (SideEffects (WithSideEffects), StaticRep, evalStaticRep, getStaticRep, unsafeEff_) import Effectful.Exception (bracket) import Foreign.C.String (withCString) -import Foreign.C.Types (CSize(CSize), CUInt) +import Foreign.C.Types (CSize (CSize), CUInt) import Foreign.Ptr (Ptr) import Hsm.Core.Bracket (bracketCont) import Hsm.Core.Serial (makeSerial) @@ -43,7 +44,7 @@ import Hsm.GPIO.FFI , requestConfigNew , requestConfigSetConsumer ) -import Hsm.Log (Log, Severity(Info, Trace), logMsg) +import Hsm.Log (Log, Severity (Info, Trace), logMsg) import Prelude hiding (replicate) $(makeSerial "GPIO" "Pin" "pinLine" ''CUInt $ [2 .. 17] <> [20 .. 27]) @@ -61,8 +62,8 @@ data GPIO (a :: * -> *) (b :: *) type instance DispatchOf GPIO = Static WithSideEffects -newtype instance StaticRep GPIO = - GPIO (Ptr LineRequest) +newtype instance StaticRep GPIO + = GPIO (Ptr LineRequest) setPins :: (GPIO :> es, Log "gpio" :> es) => [GPIOPin] -> LineValue -> Eff es () setPins pins lineValue = do diff --git a/hsm-gpio/Hsm/GPIO/FFI.hs b/hsm-gpio/Hsm/GPIO/FFI.hs deleted file mode 100644 index 2589e5e..0000000 --- a/hsm-gpio/Hsm/GPIO/FFI.hs +++ /dev/null @@ -1,95 +0,0 @@ -{-# LANGUAGE CApiFFI #-} - --- FFI bindings to `libgpiod` for direct GPIO hardware access. --- --- Exposes only the minimal required subset of `libgpiod` functionality used by --- this project. The bindings are suitable for low-level hardware control. --- --- Future work could expand this into a comprehensive `gpiod` binding package. -module Hsm.GPIO.FFI - ( chipOpen - , chipClose - , input - , output - , LineValue - , active - , inactive - , lineSettingsNew - , lineSettingsFree - , lineSettingsSetDirection - , lineSettingsSetOutputValue - , lineConfigNew - , lineConfigFree - , lineConfigAddLineSettings - , requestConfigNew - , requestConfigFree - , requestConfigSetConsumer - , LineRequest - , chipRequestLines - , lineRequestRelease - , lineRequestSetValue - , lineRequestSetValues - ) where - -import Foreign.C.String (CString) -import Foreign.C.Types (CInt(CInt), CSize(CSize), CUInt(CUInt)) -import Foreign.Ptr (Ptr) -import Foreign.Storable (Storable) - -data Chip - -foreign import capi safe "gpiod.h gpiod_chip_open" chipOpen :: CString -> IO (Ptr Chip) - -foreign import capi safe "gpiod.h gpiod_chip_close" chipClose :: Ptr Chip -> IO () - -data LineSettings - -newtype LineDirection = - LineDirection CInt - deriving (Show) - -foreign import capi safe "gpiod.h value GPIOD_LINE_DIRECTION_INPUT" input :: LineDirection - -foreign import capi safe "gpiod.h value GPIOD_LINE_DIRECTION_OUTPUT" output :: LineDirection - -newtype LineValue = - LineValue CInt - deriving (Show, Storable) - -foreign import capi safe "gpiod.h value GPIOD_LINE_VALUE_ACTIVE" active :: LineValue - -foreign import capi safe "gpiod.h value GPIOD_LINE_VALUE_INACTIVE" inactive :: LineValue - -foreign import capi safe "gpiod.h gpiod_line_settings_new" lineSettingsNew :: IO (Ptr LineSettings) - -foreign import capi safe "gpiod.h gpiod_line_settings_free" lineSettingsFree :: Ptr LineSettings -> IO () - -foreign import capi safe "gpiod.h gpiod_line_settings_set_direction" lineSettingsSetDirection :: Ptr LineSettings -> LineDirection -> IO CInt - -foreign import capi safe "gpiod.h gpiod_line_settings_set_output_value" lineSettingsSetOutputValue :: Ptr LineSettings -> LineValue -> IO CInt - -data LineConfig - -foreign import capi safe "gpiod.h gpiod_line_config_new" lineConfigNew :: IO (Ptr LineConfig) - -foreign import capi safe "gpiod.h gpiod_line_config_free" lineConfigFree :: Ptr LineConfig -> IO () - -foreign import capi safe "gpiod.h gpiod_line_config_add_line_settings" lineConfigAddLineSettings :: Ptr LineConfig -> Ptr CUInt -> CSize -> Ptr LineSettings -> IO CInt - -data RequestConfig - -foreign import capi safe "gpiod.h gpiod_request_config_new" requestConfigNew :: IO (Ptr RequestConfig) - -foreign import capi safe "gpiod.h gpiod_request_config_free" requestConfigFree :: Ptr RequestConfig -> IO () - -foreign import capi safe "gpiod.h gpiod_request_config_set_consumer" requestConfigSetConsumer :: Ptr RequestConfig -> CString -> IO () - -data LineRequest - -foreign import capi safe "gpiod.h gpiod_chip_request_lines" chipRequestLines :: Ptr Chip -> Ptr RequestConfig -> Ptr LineConfig -> IO (Ptr LineRequest) - -foreign import capi safe "gpiod.h gpiod_line_request_release" lineRequestRelease :: Ptr LineRequest -> IO () - -foreign import capi safe "gpiod.h gpiod_line_request_set_value" lineRequestSetValue :: Ptr LineRequest -> CUInt -> LineValue -> IO CInt - -foreign import capi safe "gpiod.h gpiod_line_request_set_values" lineRequestSetValues :: Ptr LineRequest -> Ptr LineValue -> IO CInt diff --git a/hsm-gpio/Hsm/GPIO/FFI.hsc b/hsm-gpio/Hsm/GPIO/FFI.hsc new file mode 100644 index 0000000..d8b0f47 --- /dev/null +++ b/hsm-gpio/Hsm/GPIO/FFI.hsc @@ -0,0 +1,116 @@ +{-# LANGUAGE CApiFFI #-} + +-- FFI bindings to `libgpiod` for direct GPIO hardware access. +-- +-- Exposes only the minimal required subset of `libgpiod` functionality used by +-- this project. The bindings are suitable for low-level hardware control. +-- +-- Future work could expand this into a comprehensive `gpiod` binding package. +module Hsm.GPIO.FFI + ( chipOpen + , chipClose + , input + , output + , LineValue + , active + , inactive + , lineSettingsNew + , lineSettingsFree + , lineSettingsSetDirection + , lineSettingsSetOutputValue + , lineConfigNew + , lineConfigFree + , lineConfigAddLineSettings + , requestConfigNew + , requestConfigFree + , requestConfigSetConsumer + , LineRequest + , chipRequestLines + , lineRequestRelease + , lineRequestSetValue + , lineRequestSetValues + ) +where + +import Foreign.C.String (CString) +import Foreign.C.Types (CInt (CInt), CSize (CSize), CUInt (CUInt)) +import Foreign.Ptr (Ptr) +import Foreign.Storable (Storable) + +data Chip + +foreign import capi safe "gpiod.h gpiod_chip_open" + chipOpen :: CString -> IO (Ptr Chip) + +foreign import capi safe "gpiod.h gpiod_chip_close" + chipClose :: Ptr Chip -> IO () + +data LineSettings + +newtype LineDirection + = LineDirection CInt + deriving Show + +foreign import capi safe "gpiod.h value GPIOD_LINE_DIRECTION_INPUT" + input :: LineDirection + +foreign import capi safe "gpiod.h value GPIOD_LINE_DIRECTION_OUTPUT" + output :: LineDirection + +newtype LineValue + = LineValue CInt + deriving (Show, Storable) + +foreign import capi safe "gpiod.h value GPIOD_LINE_VALUE_ACTIVE" + active :: LineValue + +foreign import capi safe "gpiod.h value GPIOD_LINE_VALUE_INACTIVE" + inactive :: LineValue + +foreign import capi safe "gpiod.h gpiod_line_settings_new" + lineSettingsNew :: IO (Ptr LineSettings) + +foreign import capi safe "gpiod.h gpiod_line_settings_free" + lineSettingsFree :: Ptr LineSettings -> IO () + +foreign import capi safe "gpiod.h gpiod_line_settings_set_direction" + lineSettingsSetDirection :: Ptr LineSettings -> LineDirection -> IO CInt + +foreign import capi safe "gpiod.h gpiod_line_settings_set_output_value" + lineSettingsSetOutputValue :: Ptr LineSettings -> LineValue -> IO CInt + +data LineConfig + +foreign import capi safe "gpiod.h gpiod_line_config_new" + lineConfigNew :: IO (Ptr LineConfig) + +foreign import capi safe "gpiod.h gpiod_line_config_free" + lineConfigFree :: Ptr LineConfig -> IO () + +foreign import capi safe "gpiod.h gpiod_line_config_add_line_settings" + lineConfigAddLineSettings :: Ptr LineConfig -> Ptr CUInt -> CSize -> Ptr LineSettings -> IO CInt + +data RequestConfig + +foreign import capi safe "gpiod.h gpiod_request_config_new" + requestConfigNew :: IO (Ptr RequestConfig) + +foreign import capi safe "gpiod.h gpiod_request_config_free" + requestConfigFree :: Ptr RequestConfig -> IO () + +foreign import capi safe "gpiod.h gpiod_request_config_set_consumer" + requestConfigSetConsumer :: Ptr RequestConfig -> CString -> IO () + +data LineRequest + +foreign import capi safe "gpiod.h gpiod_chip_request_lines" + chipRequestLines :: Ptr Chip -> Ptr RequestConfig -> Ptr LineConfig -> IO (Ptr LineRequest) + +foreign import capi safe "gpiod.h gpiod_line_request_release" + lineRequestRelease :: Ptr LineRequest -> IO () + +foreign import capi safe "gpiod.h gpiod_line_request_set_value" + lineRequestSetValue :: Ptr LineRequest -> CUInt -> LineValue -> IO CInt + +foreign import capi safe "gpiod.h gpiod_line_request_set_values" + lineRequestSetValues :: Ptr LineRequest -> Ptr LineValue -> IO CInt |