On May 13, 2015, at 1:55 PM, Michael Deremer <[email protected]> wrote:
>
> I have nodejs installed on a debian distro on my raspberry pi. I have
> installed nodejs and npm successfully.
>
> I wanted to install the pi-gpio module so i could nodejs to access my gpio
> pins.
>
> I'm using the root user to cancel out permissions errors. I realize thats
> unsafe and i have a user setup using the quick2wire-gpio-admin utility.
>
> I navigate to my project folder: /usr/michael/
> the director listing looks like:
> controller.js - this is my program. It starts a webserver and attempts to
> do var gpio = require('pi-gpio') and then read a gpio pin.
>
> While in my /usr/michael director i did an npm install pi-gpio.
> The install was successful and it placed a node-module folder within my
> project folder.
>
Michael, do you mean “node_modules"?
—ravi
> documentation here: https://www.npmjs.com/package/pi-gpio specifies to
> include the module by using
> var gpio = require("pi-gpio");
>
> My absolute path for the pi-gpio module looks like:
> /usr/michael/node-module/pi-gpio/pi-gpio.js
>
> When i require the file as the example states i get an error saying it
> "cannot find module".
> Do i need to modify the require path? Are my permissions screwed up.
> I've tried:
> require('pi-gpio')
> require('./node-module/pi-gpio')
> require('./node-module/pi-gpio/pi-gpio.js')
>
> Can someone explain what that require function is looking for?
>
> var gpio = require("pi-gpio");
> gpio.read(16, function(err, value) {
> if(err) throw err;
> console.log(value); // The current state of the pin
> });
>
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