Safe Haskell	None

System.Hardware.BusPirate.I2C

Contents

Bus operations
Configuration
Device addresses
Register interface

Synopsis

Bus operations

data I2cM a Source

Instances

Monad I2cM
Functor I2cM
Applicative I2cM
MonadIO I2cM

i2cMode :: I2cM a -> BusPirateM aSource

Enter I2C mode and run given action

startBit :: I2cM ()Source

Send a start bit

stopBit :: I2cM ()Source

Send a stop bit

readByte :: I2cM Word8 Source

Read a byte

ackBit :: I2cM ()Source

Send an ACK

nackBit :: I2cM ()Source

Send a NACK

bulkWrite :: ByteString -> I2cM ()Source

Write some bytes

writeRead :: ByteString -> Int -> I2cM ByteString Source

Send Start bit, write some bytes, then read some bytes (ACKing each until the last), then send a stop bit

Configuration

data I2cConfig Source

Constructors

I2cConfig
Fields i2cPower :: Bool i2cPullups :: Bool i2cAux :: Bool i2cChipSelect :: Bool

Instances

Show I2cConfig

setConfig :: I2cConfig -> I2cM ()Source

Set Bus Pirate I2C configuration bits

data I2cSpeed Source

Constructors

I2c_5kHz
I2c_50kHz
I2c_100kHz
I2c_400kHz

Instances

Bounded I2cSpeed
Enum I2cSpeed
Eq I2cSpeed
Ord I2cSpeed
Show I2cSpeed

setSpeed :: I2cSpeed -> I2cM ()Source

Set I2C bus speed

Device addresses

data I2CAddress Source

An I2C address (shifted 7-bit)

from7Bit :: Word8 -> I2CAddress Source

An I2C address from a unshifted 7-bit address

from8Bit :: Word8 -> I2CAddress Source

An I2C address from a shifted 8-bit address (masking out the read/write bit)

readAddr :: I2CAddress -> Word8 Source

writeAddr :: I2CAddress -> Word8 Source

Register interface

writeReg :: I2CAddress -> Word8 -> Word8 -> I2cM ()Source

Perform a write to the given register

readReg :: I2CAddress -> Word8 -> I2cM Word8 Source

Read the given register

readReg' :: I2CAddress -> Word8 -> Int -> I2cM ByteString Source

Perform a read of the given length starting at the given register