Packages

grisp

1.1.6
2.10.0 2.9.0 2.8.0 2.7.0 2.6.0 2.5.0 2.4.0 2.3.0 2.2.0 2.1.0 2.0.0 2.0.0-rc1 1.2.1 1.2.0 1.1.6 1.1.4 1.1.3 1.1.2 1.1.1 1.1.0 1.0.1 1.0.0 0.1.1 0.1.0

GRiSP Erlang Runtime Library

HexDocs

Current section

Files

Jump to
Readme
24 Versions
1 Dependency
3 Dependants
Files
Activity
grisp src grisp_gpio_drv.erl
Raw

src/grisp_gpio_drv.erl 

% @private

-module(grisp_gpio_drv).



% API

-export([open/0]).

-export([command/2]).



%--- Macros --------------------------------------------------------------------



-define(PORT_COMMAND_TIMEOUT, 1000).



%--- API -----------------------------------------------------------------------



open() -> open_port({spawn_driver, "grisp_gpio_drv"}, [binary]).



command(Port, Command) ->

    Port ! {self(), {command, Command}},

    receive

        {Port, {data, Resp}} ->

            Resp

    after ?PORT_COMMAND_TIMEOUT ->

            exit({gpio_driver_timeout, Command})

    end.