Hobbyist Toolkit
Labview CE 2020 connects to raspberry but CE 2021 does not
Solved!
Very interesting. Sorry I have not used CE 2021 so I cannot offer any assistance but good troubleshooting and I will be interested in what the issue is here.
Good evening all!
The installation failed on my Raspberry Pi for the following reasons:
- The Target Configuration.vi generated an invalid /etc/apt/sources.list file on the Raspberry Pi. The password for the Raspberry Pi was written into the file. This meant the MakerHub feed was not added to the list of packages. The /etc/apt/sources.list file is not changed if it already contains an entry for http://feeds.labviewmakerhub.com/
- The installation of lvrt21-schroot is dependent on the dh-systemd package. This package was included in the previous Pi OS based on Debian Buster. dh-systemd is a transitional package linking to the debhelper package. The October 30th 2021 release of the Pi OS is based on Debian Bullseye and does not contain the dh-systemd package.
Please can NI update the dependency list for lvrt21-schroot to use debhelper instead of dh-systemd?
It is possible to install the software from the command line 🙂
Here is the procedure I used to install lvrt21-schroot_21.0.0-1 on a fresh installation of the October 30th 2021 Raspberry Pi OS:
1. Change the default password for the Pi account on the Raspberry Pi.
2. Setup a WiFi or Ethernet connection from the Raspberry Pi to your router.
3. Setup the Raspberry Pi configuration as shown below
4. SSH into the Raspberry Pi or open a terminal window on the Raspberry Pi desktop.
5. Enter the commands shown in the code block below.
Note: The text may wrap due to the web browser window size. I recommend copying the text into a text editor to see the original formatting.
sudo sh -c 'echo "deb [trusted=yes] http://feeds.labviewmakerhub.com/debian/ binary/" >> /etc/apt/sources.list'
# Check the contents of the /etc/apt/sources.list file
cat /etc/apt/sources.list
The contents the file should be
deb http://raspbian.raspberrypi.org/raspbian/ bullseye main contrib non-free rpi
# Uncomment line below then 'apt-get update' to enable 'apt-get source'
#deb-src http://raspbian.raspberrypi.org/raspbian/ bullseye main contrib non-free rpi
deb [trusted=yes] http://feeds.labviewmakerhub.com/debian/ binary/
The file can be edited if required using the command sudo nano /etc/apt/sources.list
6. Enter the commands shown in the code block below.
sudo apt-get update
# Install the dependencies
sudo apt-get install -y python schroot debhelper
cd Downloads
# Download and install lvrt21-schroot without the dh-systemd dependency
apt-get download lvrt21-schroot:armhf
sudo dpkg -i --ignore-depends=dh-systemd lvrt21-schroot_21.0.0-1_armhf.deb
I was able to connect to the Raspberry Pi from the LabVIEW Project Explorer.
Hope this works on your system.
Cheers,
Andy.
Excellent.. worked for me with CE 2021 and pi 4.
Thank you for the detailed steps.
As pointed out, the sources.list was not updated correctly when the installer was launched from the LabVIEW.
Following your suggestion of fixing the sources.list file and installing the labview runtime manually solved the issue..
The Installed Version field which was empty before now shows correctly.
A very well deserved thanks and kudos.
- Ravi Kumar
@lovediwan wrote:next i'm trying to build some user interface for my application on pi, any suggestions will be of great help.
Use the NI G Web Development Software.
@lovediwan wrote:any straight forward example...
I following this to get me started with the NI G Web Development Software: https://www.mediamongrels.com/make-ing-with-labview-raspberry-pi-part-4-user-interfaces-with-labview...
