Popularity

8.0

Growing

Activity

4.2

Stars 38

Watchers 6

Forks 7

Last Commit 7 days ago

Monthly Downloads: 38

Programming language: Haskell

License: BSD 3-clause "New" or "Revised" License

Tags: System

Latest version: v1.0

HPi alternatives and similar packages

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9.9 8.7 HPi VS xmobar

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9.7 0.0 HPi VS angel

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9.6 4.1 HPi VS date-cache

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9.6 7.3 HPi VS unix

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9.5 0.0 HPi VS ghc-hotswap

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9.5 4.9 HPi VS hapistrano

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9.5 0.0 HPi VS nix-deploy

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9.5 5.0 HPi VS optparse-generic

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9.4 3.3 HPi VS envy

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9.3 7.0 HPi VS directory

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9.3 5.8 HPi VS typed-process

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9.2 7.5 HPi VS filepath

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9.2 2.6 HPi VS pid1

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9.1 9.7 HPi VS hnix-store-core

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9.0 2.2 HPi VS log

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8.9 0.0 HPi VS openssh-github-keys

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8.9 0.0 HPi VS clifm

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8.9 0.0 HPi VS ekg-core

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8.9 0.0 HPi VS hail

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8.9 4.6 HPi VS clock

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8.7 0.0 HPi VS monky

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8.7 0.0 HPi VS ekg-cloudwatch

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8.7 0.0 HPi VS hobbes

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8.7 0.0 HPi VS logsink

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8.6 7.0 HPi VS atomic-write

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8.6 0.0 HPi VS apotiki

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8.6 0.0 HPi VS cef

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8.5 0.0 HPi VS unix-compat

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8.5 0.0 HPi VS system-fileio

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8.4 0.0 HPi VS ascii-progress

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8.4 5.7 HPi VS language-puppet

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8.4 3.2 HPi VS optparse-declarative

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8.3 0.0 HPi VS hinotify

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8.3 3.3 HPi VS which

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8.3 0.0 HPi VS ekg-statsd

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8.3 3.1 HPi VS HFuse

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8.2 0.0 HPi VS halfs

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8.2 0.0 HPi VS executable-hash

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8.2 0.0 HPi VS directory-contents

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8.1 4.3 HPi VS nix-derivation

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8.1 0.0 HPi VS hen

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Popular Comparisons

README

HPi

Library to access the GPIO pins on a Raspberry Pi from Haskell. Works with all Raspberry Pi versions up to and including v4.

===

HPi is a small library to access the GPIO pins on a Raspberry Pi from Haskell. It also includes some functions to use the I2C and SPI functionality of the Raspberry Pi, see the haddock documentation for details. It is constructed as a FFI wrapper around the bcm2835 library, which is written in C. Because this library accesses the GPIO pins directly via a memory map, it should be faster than libraries which access the GPIO pins via the /sys/class/gpio interface.

===

In order to compile programs including this library, you will need to have the bcm2835 library installed. It can be found at http://airspayce.com/mikem/bcm2835/index.html. When performing the cabal install for HPi you may need to pass the --extra-lib-dirs and --extra-include-dirs flags if you have installed bcm2835 at a non-standard path. This library has been tested to work with bcm2835 version 1.63. Note that you cannot access the memory map without root privileges, programs should be run with sudo.

===

Questions, bug reports and feature requests are more than welcome!