dvlopt.i2c

Easily use I2C from your clojure program.

On linux, I2C buses are available at '/dev/i2c-N' as char devices where 'N' is the bus number. This clojure library allows the user to talk to slave device using such a bus. Attention, for the time being, java 9 is not supported.

Usage

Read the API.

All functions are specified using clojure.spec.

In short, without error checking :

(require '[dvlopt.i2c :as i2c])


;; Open the needed bus.

(def bus
     (::i2c/bus (i2c/open "/dev/i2c-1")))


;; Select slave 0x76.

(i2c/select-slave bus
                  0x76)


;; Write byte 0xa2 to register 0x55.

(i2c/write-byte bus
                0x55
                0xa2)


;; Read 8 bytes into a byte array.

(def ba
     (byte-array 8))

(i2c/read-bytes bus
                ba)


;; Do not forget the close the bus when done.

(i2c/close bus)

License

Copyright © 2017-2018 Adam Helinski

Distributed under the Eclipse Public License either version 1.0 or (at your option) any later version.