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Issue with Nodejs onoff install - Is the help page outdated?

rpi
#1

I have trouble setting up my Raspi3 (arm7) with blynk. Here is the sequence of what I have done, starting with a fresh Debian Stretch install.
$ sudo apt-get purge node nodejs node.js -y
$ sudo apt-get autoremove
$ url -sL https://deb.nodesource.com/setup_11.x | sudo -E bash -
Note: I use setup_11.x as setup_6.x is supposed to be for arm6 I believe (it doesn’t install npm in my case)
$ sudo apt-get update && sudo apt-get upgrade
$ sudo apt-get install build-essential nodejs -y
At this point I see that both node and npm are installed (respectively versions v11.6.0 & 6.5.0-next.0)
$ sudo npm install blynk-library -g
$ sudo npm install onoff -g // ==> this is where the pb occurs

The list of command is exactly what the help page is specifying but onoff doesn’t install (error messages are copied below). I also tried the “manual version” of install as specified in the help page. Same results.
Can somebody help ? (I also have the log file is needed)
Thanks much in advance.

gyp WARN EACCES user “root” does not have permission to access the dev dir “/root/.node-gyp/11.6.0”
gyp WARN EACCES attempting to reinstall using temporary dev dir “/usr/lib/node_modules/onoff/node_modules/epoll/.node-gyp”
gyp WARN install got an error, rolling back install
gyp WARN install got an error, rolling back install
gyp ERR! configure error
gyp ERR! stack Error: EACCES: permission denied, mkdir ‘/usr/lib/node_modules/onoff/node_modules/epoll/.node-gyp’
gyp ERR! System Linux 4.14.79-v7+
gyp ERR! command “/usr/bin/node” “/usr/lib/node_modules/npm/node_modules/node-gyp/bin/node-gyp.js” “rebuild”
gyp ERR! cwd /usr/lib/node_modules/onoff/node_modules/epoll
gyp ERR! node -v v11.6.0
gyp ERR! node-gyp -v v3.8.0
gyp ERR! not ok
npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! epoll@2.0.7 install: node-gyp rebuild
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the epoll@2.0.7 install script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.
npm ERR! A complete log of this run can be found in:
npm ERR! /root/.npm/_logs/2019-01-05T17_37_51_736Z-debug.log

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#2

More information:
When adding - -unsafe-perm to the line sudo npm install onoff, all the errors disappear but are replaced by a few warnings (see below). But apparently onoff is not correctly installed because blynk client keeps telling " No direct pin operations available. Maybe you need to install mraa or onoff modules?".
Thanks again for any hint on what the issue could be and how to fix it. I am really stuck…

List of warnings:
npm WARN saveError ENOENT: no such file or directory, open ‘/home/pi/package.json’
npm notice created a lockfile as package-lock.json. You should commit this file.
npm WARN enoent ENOENT: no such file or directory, open ‘/home/pi/package.json’
npm WARN pi No description
npm WARN pi No repository field.
npm WARN pi No README data
npm WARN pi No license field.

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#3

my order on my pi2 was a little different… might be worth trying .
even though the essentials is installed… i installed npm.

apt-get install npm
npm install -g blynk-library
npm install -g onoff

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#4

Interesting…
I tried to install npm (on top of what I had already, using sudo apt-get install npm) and re-install blynk-library and onoff (in sudo mode otherwise it wouldn’t install) and now when I press a button in the blynk app, the blynk client exits on an error (see below).

throw new ERR_INVALID_CALLBACK();
^
TypeError [ERR_INVALID_CALLBACK]: Callback must be a function
at maybeCallback (fs.js:135:9)
at Object.write (fs.js:536:16)
at Gpio.write (/usr/lib/node_modules/onoff/onoff.js:192:8)
at exports.BoardOnOff.process (/usr/lib/node_modules/blynk-library/blynk-node.js:367:13)
at Blynk.onReceive (/usr/lib/node_modules/blynk-library/blynk.js:481:29)
at exports.SslClient. (/usr/lib/node_modules/blynk-library/blynk.js:562:50)
at exports.SslClient.emit (events.js:188:13)
at TLSSocket. (/usr/lib/node_modules/blynk-library/blynk-node.js:212:16)
at TLSSocket.emit (events.js:188:13)
at addChunk (_stream_readable.js:288:12)

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#5

Looks like you made some headway.

Just to clarify, you’re running the sudo blynk-client <auth> command, or sudo node myproject.js command ?

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#6

blynk-client (but not in sudo)

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#7

It must be your node version (11).

I followed this instruction and really had no issues.
https://docs.blynk.cc/#hardware-set-ups-raspberry-pi

Sorry, im not going to be of much help.

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#8

Hi,

I receive the exact same error.
I’ve tried installing with sudo. The I’ve tried as root.
I tried creating the metioned paths.
I tried chaging owner for the specified files, both with my current user and root.
Nothing works!

I also have no idea where to go to next :frowning:

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#9

Same error msg > so unable to install onoff package…
I tried with node 8, 10, 11 - which all install automatically npm
But onoff package always fails with similar listed msg
I‘m using the latest raspi3B - no way to get Blynk run

In paralllel I tried to install local Blynk server this works perfect

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#10

I spent a huge amount of time trying to fix this issue on my rpi 3, with no success.
Maybe we need to post an issue on github ?

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#11

Just ignore the missing onoff, as it is only used for direct pin manipulation in the App, and use virtual pins with any other GPIO library… I use pigpio with great success.

Here are some NodeJS examples

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#12

I used the latest noobs installation to get Debian on my RaspPi
=> it includes node-red , this might be an issue …?
May be It is worth to use an old noobs installation and try Blynk inst. again…
Do YOU also have node-red pre-installed?

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#13

I recently did load in the latest Stretch, and I recall seeing something about the Node-Red preinstall. But while also mucking about with the onoff issue, I think I purged all node versions in the various re-installations.

In the end I realised that since I do not tend to use direct from App GPIO control, rather I use virtual pins all around, I simply stopped worrying about onoff and carried on with my life :smiley:

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#14

Yes, it seems node-red is pre-installed on Strech. Can that be the issue ?

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#15

Dude, if you absolutely simple App based direct GPIO control, AKA no virtual pins, then an Arduino or ESP is much cheaper hardware. Otherwise just use virtual pins and add in another GPIO library (which you would need anyhow for things like PWM, servos, etc)… Then a “failed” onoff doesn’t matter in the slightest.

Other than that suggestion, I have no idea why it doesn’t work… but apparently, in my tests, Node-Red has nothing to do with it.

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