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{-# LANGUAGE DataKinds #-}
{-# LANGUAGE OverloadedRecordDot #-}
{-# LANGUAGE OverloadedStrings #-}
module Hsm.Status
( StatusEnv(..)
, statusEnvDefault
, status
) where
import Foreign.Ptr (Ptr)
import GHC.Records (HasField)
import Hsm.GPIO (GPIO(..), LineRequest, active, inactive, setPins)
import Hsm.Log qualified as L
import Hsm.PWM (PWMChannel(PWM2), PWMHandle, setDutyCycle, setPeriod)
data StatusEnv = StatusEnv
{ gpioError :: GPIO
, gpioOK :: GPIO
}
statusEnvDefault :: StatusEnv
statusEnvDefault = StatusEnv {gpioError = GPIO17, gpioOK = GPIO27}
status ::
HasField "statusEnv" env StatusEnv
=> Ptr LineRequest
-> PWMHandle
-> env
-> [Bool]
-> IO ()
status lineRequest pwmHandle env signals = do
setDutyCycle pwmHandle PWM2 pwmDutyCycle
setPeriod pwmHandle PWM2 pwmPeriod
if and signals
then do
logMsg "All signals OK"
setPins lineRequest [env.statusEnv.gpioError] inactive
setPins lineRequest [env.statusEnv.gpioOK] active
else do
logMsg "Error signal received"
setPins lineRequest [env.statusEnv.gpioError] active
setPins lineRequest [env.statusEnv.gpioOK] inactive
where
logMsg = L.logMsg ["status"]
pwmDutyCycle = 1000000000
pwmPeriod = 2000000000
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