System.Hardware.LinuxDevI2C

This module provides an I2C interface based Linux /devi2c-xxx

Documentation

type Addr = Word8

type Command = Word8

type Device = Fd

withDevice :: FilePath -> (Device -> IO a) -> IO a

Open an I2C device run, an IO action and close the device again. A device file on Linux could be for example /dev/i2c-7.

openDevice :: FilePath -> IO Device

Open an I2C Device.

closeDevice :: Device -> IO ()

Close an I2C Device.

setSlaveAddr :: HasCallStack => Device -> Addr -> IO ()

Set the address of the I2C Slave

setSlaveAddrForce :: HasCallStack => Device -> Addr -> IO ()

writeByte :: HasCallStack => Device -> Command -> IO ()

writeByteData :: HasCallStack => Device -> Command -> Word8 -> IO ()

readByte :: HasCallStack => Device -> IO ()

readByteData :: HasCallStack => Device -> Command -> IO Word8

readI2CBlockData :: HasCallStack => Device -> Command -> Int -> IO ByteString

writeI2CBlockData :: HasCallStack => Device -> Command -> ByteString -> IO ()