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    simplespipublic

    node-simplespi

    This is a simple and easy to use SPI module for node.js.

    I wrote this to have an easy way to control a Adafruit PWM LED driver with my Raspberry Pi ( node-leddriver ), but it should also work with different clients and hosts.

    Installation

    npm install simplespi

    Usage

    var simplespi = require( "simplespi" );
     
    var response = simplespi.send( "AA00FF", "/dev/spidev0.1" );

    The send method accepts a hexcode string as parameter and sends it to the SPI device defined in the optional second parameter. If the second parameter is undefined it uses /dev/spidev0.0.

    The value returned is the response of the device in hexcode string form.

    Testing on the Pi

    First run the following on your Raspberry Pi (with root privileges):

    console.log(simplespi.send( "AA00FF" ));

    It should return:

    000000

    Then shortcut the MISO and MOSI pins of your pi and run the same command again. It should then return:

    AA00FF

    If you got this your SPI device is working.

    Enabling SPI on the Pi

    If it's still not working, check your /etc/modprobe.d/raspi-blacklist.conf and comment out the entry:

    blacklist spi-bcm2708

    by changing it to:

    #blacklist spi-bcm2708

    then reboot your pi and type ls /dev. If spidev0.0 is in the list you're fine and you can repeat the test.

    Keywords

    none

    install

    npm i simplespi

    Downloadsweekly downloads

    2

    version

    0.0.1

    license

    none

    repository

    github.com

    last publish

    collaborators

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