Thoughts dereferenced from the scratchpad noise.

PC Engines APU2 netboot Debian installation

Published at March 26, 2016 · Piotr Król · 3 min read

In previous post I described how to setup PXE server and boot Debian installer using it. I mentioned that provided setup is limited and some extensive configuration is needed to make it useful for real world example. Since that time I learned that there is chain command in iPXE, which give ability to use arbitrary TFTP server as boot file source. Using RPi PXE server For example by changing my test network topology from previous post to something like that:...

Categories: os-dev

PXE server with Raspberry Pi 1

Published at March 12, 2016 · Piotr Król · 4 min read

Recent days we get the announcement about releasing Raspberry Pi 3. Those of you who play with embedded systems or just try to make things probably still got good old Raspberry Pi (1). Because during time old platforms loose value as potential candidate for new projects I decided to sacrifice my old RPi and make test server from it. One of my customer required testing his software against PXE server with various configurations....

Categories: app-dev

Linux, RPi and USB over IP updated

Published at October 27, 2015 · Piotr Król · 4 min read

Because of increasing interesting in USB over IP topic I decided to refresh my old post. I will focus on doing the same thing with more recent version of Raspabian. If you need more information please read my previous post. Setup SD card First get recent version of Raspbian, then unzip and dd it to SD card: 1 sudo dd bs=4M if=2015-09-24-raspbian-jessie.img of=/dev/sdc If you are impatient and want to know what happen in background you can use this method of tracking dd progress:...

Categories: os-dev

Raspberry Pi kernel repository aggregating patches for Linux mainline

Published at October 15, 2014 · Piotr Król · 3 min read

Since several months I’m trying to find my way to embedded Linux programming. My hardware set was very limited I had only one board that can be called “embedded” and it was Raspberry Pi. Because I am more interested in firmware/OS level then hardware I tried to figure out what is going on with RPi kernel. After taking brief review of raspberrypi/linux GitHub repository I realized that close to my heart is upstreaming effort....

Categories: os-dev

Linux, RPi and USB over IP

Published at August 18, 2014 · Piotr Król · 10 min read

Trying to google ‘USB over IP’ doesn’t give much except some business web pages that give you it as a service. This brings some information about potential on the market IMHO. Main idea is well presented on open source project page for usbip. I really recommend to read USB/IP - a Peripheral Bus Extension for Device Sharing over IP Network technical paper it describe briefly technical details and capability. In short USB over IP is a sharing system aim to expose USB devices from server to client encapsulating USB I/O messages in TCP/IP payload....

Categories: firmware

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