comment on

Thanks for buying the book! :)

Youbetcha.

Buy a Pi 3 and a NoIR Camera Board v2. Make sure you've got a 2.1A USB charger plug with a good quality cable. You'll also need a good micro SD card. Mine all range from 16-64GB. Spend a little more here; a quality card makes a difference. All in all, you should be right there in around $100.

I got a pi 3B+, NoIR Camera Board v2, 3000 mA power, 32 gig micro sd card. I can hardly believe that it already works. I did not fdisk the sd card as it was already loaded with a perfectly-good unix. Output is vivid and quick.

I learned XS over time and don't remember the reading I did. WiringPi, which is the backend to RPi::WiringPi which the Raspberry Pi book is based on is an XS module. Most of the code wraps an external C/C++ library, but there is some XS involved. A very trivial XS module I've written is Bit::Manip. There's not much XS there either, but it's a good example of how to present C functions to Perl code, how the files all hang together and such.

It was very helpful for me to work through the first 2 examples, EX-1. XS interface description is comprehensive, and difficult. Before this, I never understood what was happening in the command:

h2xs -A -n Mytest

It finally covers page 176 of Intermediate Perl to work through it.

Regarding the install, things are moving forward pretty well, but I have run into my first roadblock. I'm getting 404's beginning with this guy:

libgstreamer-plugins-base1.0-dev

and it tanks whatever is to follow.

E: Failed to fetch http://raspbian.raspberrypi.org/raspbian/pool/main/
+g/gst-plugins-base1.0/gir1.2-gst-plugins-base-1.0_1.14.4-2_armhf.deb 
+ 404  Not Found [IP: 93.93.128.193 80]
E: Failed to fetch http://raspbian.raspberrypi.org/raspbian/pool/main/
+g/gst-plugins-ugly1.0/gstreamer1.0-plugins-ugly_1.14.4-1_armhf.deb  4
+04  Not Found [IP: 93.93.128.193 80]
E: Failed to fetch http://raspbian.raspberrypi.org/raspbian/pool/main/
+g/gst-plugins-base1.0/libgstreamer-plugins-base1.0-dev_1.14.4-2_armhf
+.deb  404  Not Found [IP: 93.93.128.193 80]
E: Failed to fetch http://raspbian.raspberrypi.org/raspbian/pool/main/
+g/gst-plugins-bad1.0/gir1.2-gst-plugins-bad-1.0_1.14.4-1+b1_armhf.deb
+  404  Not Found [IP: 93.93.128.193 80]
E: Unable to fetch some archives, maybe run apt-get update or try with
+ --fix-missing?
pi@raspberrypi:~ $ sudo apt-get update
Hit:1 http://archive.raspberrypi.org/debian buster InRelease
Get:2 http://raspbian.raspberrypi.org/raspbian buster InRelease [15.0 
+kB]
Reading package lists... Done        
E: Repository 'http://raspbian.raspberrypi.org/raspbian buster InRelea
+se' changed its 'Suite' value from 'stable' to 'oldstable'
N: This must be accepted explicitly before updates for this repository
+ can be applied. See apt-secure(8) manpage for details.
[download]

Update:

I've isolated the commands that result in 404-errors:

sudo apt-get install gstreamer1.0-plugins-ugly
sudo apt-get install gir1.2-gst-plugins-bad-1.0
sudo apt-get install gir1.2-gst-plugins-base-1.0
sudo apt-get install libgstreamer-plugins-base1.0-dev
[download]

Since the problem seems to be in the plugins department, I thought I might be able to get away with autogen.sh, but no dice:

checking for GST... no
configure: error: 
      You need to install or upgrade the GStreamer development
      packages on your system. On debian-based systems these are
      libgstreamer1.0-dev and libgstreamer-plugins-base1.0-dev.
      on RPM-based systems gstreamer1.0-devel, libgstreamer1.0-devel
      or similar. The minimum version required is 1.0.0.
  
configure failed
[download]

I think this brands me as a debian user:

$ lsb_release -a
No LSB modules are available.
Distributor ID:    Raspbian
Description:    Raspbian GNU/Linux 10 (buster)
Release:    10
Codename:    buster
$ cat /etc/apt/sources.list 
deb http://raspbian.raspberrypi.org/raspbian/ buster main contrib non-
+free rpi
# Uncomment line below then 'apt-get update' to enable 'apt-get source
+'
#deb-src http://raspbian.raspberrypi.org/raspbian/ buster main contrib
+ non-free rpi
$
[download]

I took a look around to see what what I could checking both gst-plugins-base1.0 and gstreamer. I seem not to have a lot of elbow grease when it comes to distributions, if it veers off the main path....

Q1) Do I look for newer versions or change my settings?

Thx all for comments,

In reply to Re^2: XS, raspberry pi, and a hundred bucks by Aldebaran
in thread XS, raspberry pi, and a hundred bucks by Aldebaran

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