How to

A collection of 77 posts

Continuous Integration , How to , SCC

Automatic Versioning

At the GLA Summit recently minted LabVIEW Champion Felipe Pinheiro Silva gave a 7×7 on versioning. It was interesting. Be sure to take a few minutes and watch it when the video is released. I do things slightly differently. I learned my method from another LabVIEW Champion, Stefan Lemmens.

Unit Testing , How to , Coding Philosophy

How I use Test-Driven Development (TDD)

A lot of people out there are very dogmatic about Test Driven Development. There’s a lot rules and a lot of very strong opinions. If you don’t believe me, go check out Twitter. While on Twitter, I saw GeePaw Hill’s Ten I statements about TDD. It inspired

Continuous Integration , How to

Trouble Shooting GitLabCI

I saw a post recently on LinkedIn by Jim Kring. He had some issues with a build hanging unexpectedly. They were running Jenkins under a system account and therefore it was really hard to see what was going on to be able to troubleshoot it. Jim then linked to a

Unit Testing , How to

A case for sets

Back in LabVIEW 2019, NI introduced both sets and maps. Maps became immediately popular. They should be. They are very useful constructs. However, sets seem to have gotten much less attention. In some ways, they aren’t as glamorous, but they do offer some advantages over arrays. To me, these

SCC , How to , Software tools

A Better Way To Set Up LVCompare and LVMerge

EDIT: Since I originally wrote this post, I have come up with a much easier way. I am leaving this post up for historcial reasons, but do yourself a favor and just go here I have previously written about setting up LVCompare and LVMerge. I ran into a situation where

How to , Continuous Integration , Legacy Code

Quick VI Analyzer

I haven’t talked a whole lot about VI Analyzer yet. It’s a static code analysis tool. If you come from text-based background, it is similar to a linter. It checks your code against a set of predefined rules and reports back any violations. You do need LabVIEW professional

Continuous Integration , How to

GitLab CI and Git Bash

A while back GitLab CI deprecated the batch executor for Windows runners. That meant that you could no longer directly call batch scripts from a Gitlab Runner. They had switched over to Powershell. There were workarounds. You could still write a batch script and call it from PowerShell using cmd.

Unit Testing , How to , Continuous Integration

Unit Tests for PPLs

So in my Unit Testing Workshop, I talk about taking tests written for libraries and retargetting them to the PPL once the library is built into PLLs. The last time I taught the workshop, someone asked me for an example. I didn’t have a good example to share, so

How to , Linux , Software tools , CRIO , Security

CRIO Tips: Setting up VNC

This a follow on article to a couple previous articles: here and here. Its part of a series of tips that Neil Crossan provided me with, dealing with cRIOs and Linux RT targets. He saw a post of mine and sent me a bunch of tips and tricks. I thought

How to , Linux , CRIO

CRIO Tips: Mounting Network Drives

This a follow on article to a previous article. Its part of a series of tips that Neil Crossan provided me with, dealing with cRIOs and Linux RT targets. He saw a post of mine and sent me a bunch of tips and tricks. I thought I would share some

How to , CRIO , Linux , Security

CRIO tips: Running Linux Commands As Root From LabVIEW

Neil Crossan was one of the people responsible for the forum posts around setting up a Virtual CRIO, which I previously posted about. He saw my post and sent me some more tips and tricks. I thought I would share some of them with you here. Many thanks to Neil

How to , Design Patterns , OOP , Software Engineering

What is a plugin architecture?

I wrote a previous post about ppl plugins and it occurred to me that maybe not everyone knows what a plugin architecture is. So I decided to clarify a little bit in case it wasn’t clear. I’m going to talk in terms of classes inside packed project libraries

How to , Python

Advanced Datatypes with Python Node in LabVIEW

A recent LinkedIn post on using Python and LabVIEW got me thinking about passing more advanced datatypes between LabVIEW and Python. I have written about the Python node before, but I hadn’t really played with advanced datatypes before, so I thought I would play around and come up with

How to , CRIO , Software tools

How to create a cRIO Virtual Machine

Just a week or two ago I stumbled upon a forum post that outlined how to create cRIO Virtual Machine. I’ve written a little bit about Virtual Machines before. Creating a virtual cRIO was pretty straightforward, but it required piecing together several responses in the thread, particularly since I

SCC , How to

View the Git Reflog Graphically

While creating some content for my “Using Git Effectively” course, I discovered something new and amazingly useful. You may know about Git’s reflog and that it provides a chronological history of where your HEAD has been so that you can recover orphaned commits. For some things though, it can

Webinars , How to , Software tools

February 2021 Webinar

LabVIEW Shortcuts – Don’t waste time wiring… February 24th, 10:00am MT We are fortunate to have Stefan Lemmens join us in February. He is going to give a presentation on all the various types of LabVIEW Shortcuts. We are always looking for ways to be more efficient. These tips

Unit Testing , How to

TDD in LabVIEW using Caraya

I’ve written a lot about Unit Testing in LabVIEW. There are a variety of frameworks. My go-to is JKI VI Tester, but JKI’s Caraya has been gaining popularity lately. I finally had time to sit down with it and practice some Test Driven Development (TDD). This is where

Design Patterns , How to

PPL Plugins

I wrote previously about Tom and I’s Gang of Four project where we are creating GOF Examples in LabVIEW. We’ve been getting distracted a little lately, but I have finally found some time to get back to it. I thought I would share with you what I have

How to , SCC

Showing Status in the Git Bash Prompt

Whenever you use Git there is always this conflict between using a GUI and the Git Bash. They both have their strengths and most people prefer one over the other. I feel like in order to master Git you really need to learn to use both and take advantage of

Continuous Integration , SCC , How to , OOP

Branch by Abstraction

In the past I have been a big fan of Git Flow. I still am, but I recently read the book Continuous Delivery and it has me rethinking some things. In particular they talk about Continuous Integration and not using feature branches, which is a very large component of Git

How to , Software tools

Getting Started with 3-D Printing

I did a job a few years ago for a mining company. We were building a tester to test soil samples. I was amazed that many of the parts for the tester were 3-d printed. I thought it was pretty cool technology. At the time I thought it could be

How to

PPL Paths

As some of you may know, we host a Virtual Coffee on Tuesday mornings. It started out as a part of our local LabVIEW User Group ALARM. A bunch of us ALARM members would get together every couple weeks in person for coffee. When COVID hit, we couldn’t do

Design Patterns , How to , OOP

Dynamic Unloading of Classes

In my previous post, I did a demo of the factory pattern. In it I showed how to dynamically load classes based on their path. One thing you may have noticed in that demo is that the classes stayed in memory even after the Test VI stopped running. If you

Python , TestStand , How to

Python Adaptor in TestStand

I wrote a recent post about calling Python from LabVIEW. As it turns out you can also call Python directly from Test Stand as well. In TestStand 2019 a new Python Adaptor was added. Rather than create my own example, I will just point you to the shipping example. It’

Python , How to

Python node basics

I have been learning a bit about Python lately. I find it a nice complement to LabVIEW. Like LabVIEW it is very good for writing quick little scripts and rapidly prototyping things. Unlike LabVIEW, it is not strictly typed, which makes it rather interesting to me. A few years ago