h2c: Bindings to Linux I2C with support for repeated-start transactions.

[ library, mit, system ] [ Propose Tags ]

H2C is a high-level binding to the Linux I2C subsystem with support for repeated-start transactions, not just individual reads and writes.

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Versions [RSS]	1.0.0
Dependencies	base (>=4.7 && <5), bytestring, mtl, resourcet [details]
License	MIT
Copyright	2017 Edward Amsden
Author	Edward Amsden
Maintainer	edwardamsden@gmail.com
Category	System
Home page	https://bitbucket.org/fmapE/h2c
Bug tracker	https://bitbucket.org/fmapE/h2c/issues
Source repo	head: git clone https://bitbucket.org/fmapE/h2c.git
Uploaded	by eamsden at 2017-07-08T15:36:51Z
Distributions
Reverse Dependencies	1 direct, 1 indirect [details]
Downloads	969 total (6 in the last 30 days)
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Status	Docs not available [build log] All reported builds failed as of 2017-07-08 [all 3 reports]

H2C is a binding to the Linux i2c-tools/i2c-dev API. It uses the I2C_RDWR ioctl for repeated-start communications between master and slave.

You'll probably have to run as root. Getting regular users direct access to i2c busses on Linux is tricky.
The Linux i2c-stub driver that you might think would be useful for testing doesn't support the I2C_RDWR ioctl. This is why, if you try to use it, you'll get the "invalid argument" error.

$ stack haddock --open, find module System.IO.I2C

BE CAREFUL WITH I2C. It can be used to poke at things like your graphics card, fans, &c.

See my library bno055-haskell for examples of h2c in use.