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Jumpnow Technologies provides software consulting specializing in embedded Linux and Qt5.

Security

21 Dec 2018 » IOT Regulations and Guidelines
08 Dec 2018 » Signing code with OpenSSL
21 Nov 2018 » Running Snort on OpenBSD

ARM Shellcode

21 Dec 2018 » Linux ARM Shellcode - Part 0 - Credits and References
19 Dec 2018 » Linux ARM Shellcode - Part 1 - Syscalls
19 Dec 2018 » Linux ARM Shellcode - Part 2 - Removing NULLs
19 Dec 2018 » Linux ARM Shellcode - Part 3 - Bind and Reverse Shells
19 Dec 2018 » Linux ARM Shellcode - Part 4 - The Stack
19 Dec 2018 » Linux ARM Shellcode - Part 5 - Functions and the Stack
19 Dec 2018 » Linux ARM Shellcode - Part 6 - Randomized Address Space
19 Dec 2018 » Linux ARM Shellcode - Part 7 - Corrupting the Stack

Embedded Linux

08 Dec 2018 » Speeding up initialization of the Linux RNG
23 Jul 2018 » An upgrade strategy for embedded Linux systems
12 Nov 2017 » Choosing an embedded Linux build system

Raspberry Pi

24 Nov 2018 » Building Raspberry Pi Systems with Yocto
17 Aug 2018 » Analyzing SPI driver performance on the Raspberry Pi
15 Mar 2018 » Building Raspberry Pi Systems with Buildroot
24 Apr 2017 » Using DS18B20 1-wire Temp Sensors with the Raspberry Pi
16 Apr 2017 » Raspberry Pi TFT Displays and Qt5
10 Apr 2017 » Using Qt Creator to cross-compile and debug Raspberry Pi Qt5 apps
10 Apr 2017 » Working with the Gumstix Pi Compute Dev Board
10 Apr 2017 » Working with the Raspberry Pi Compute Board
09 Apr 2017 » Using the Raspberry Pi hardware PWM timers
01 Mar 2017 » Using ADS1115 ADCs with Raspberry Pis
16 Feb 2017 » Running Qt5 Apps Over VNC Works Again
31 Jan 2017 » Using MCP3008 ADCs with Raspberry Pis
23 Jan 2017 » Compiling Raspberry Pi Overlays with Buildroot
09 Jan 2017 » Enabling Qt5 WebEngine in Yocto Builds
02 Jan 2017 » Qt5 and QML Development with the Raspberry Pi
26 Dec 2016 » Raspberry Pi 3 AdHoc Wifi Network
20 Sep 2016 » Working with pi-blaster for PWM on the RPi
20 Mar 2016 » Raspberry Pi Serial Console
22 Jan 2016 » A Raspberry Pi Pandora music player

BeagleBone

27 Dec 2018 » Building BeagleBone Systems with Yocto
08 Jan 2018 » Adding Mender to a BeagleBone System
22 Dec 2017 » Building Beaglebone Systems with Buildroot
10 Mar 2017 » Working with the Beaglebone Black PRU using UIO
18 Jun 2016 » Working on the BeagleBone Kernel
22 Jan 2016 » BeagleBone Black pinmuxing and other device tree notes
23 Oct 2015 » BeagleBone Black U-Boot

Odroid

27 Dec 2018 » Building Odroid-C2 Systems with Yocto
04 Feb 2018 » Adding Mender to an Odroid-C2 System

Wandboard

27 Dec 2018 » Building Wandboard Systems with Yocto
07 Jan 2018 » Adding Mender to a Wandboard System
27 Dec 2017 » Building Wandboard Systems with Buildroot

Gumstix - Linux

27 Dec 2018 » Building Duovero Systems with Yocto
07 Jan 2018 » Adding Mender to a Duovero System
13 Mar 2017 » Duovero Real-time Clock
23 May 2016 » Building Overo Systems with Yocto
25 Jun 2015 » Duovero Access Point
05 Sep 2014 » Overo Kernel Development - Simple patching
02 Sep 2014 » Setting the Overo Ethernet MAC
25 Feb 2014 » Erasing the Overo U-Boot Environment
14 Jan 2014 » Optimizing GStreamer ffmpegcolorspace for Gumstix webcams

Yocto

02 Sep 2016 » Qt5 Errors on Exit using QPA
17 Feb 2016 » Miscellaneous Yocto Notes
20 Oct 2014 » Adding Go language support to a Yocto build
25 Jul 2014 » Managing a custom opkg repository
24 Jul 2014 » Using a Yocto build workstation as a remote opkg repository
02 Apr 2014 » Adding Fortran support to a Yocto build
24 Feb 2014 » Using private Github repos with Yocto

Miscellaneous

29 May 2018 » Working with a Mender CLI
12 Jul 2017 » Using private git repositories with Google Repo

Gumstix - FreeBSD

11 Jan 2015 » FreeBSD Duovero Common DTS for OMAP4
02 Dec 2014 » FreeBSD Duovero Kernel Development
24 Nov 2014 » FreeBSD Duovero build workstation setup
23 Nov 2014 » FreeBSD Duovero GPIO
18 Nov 2014 » FreeBSD Duovero I2C - Changing bus speeds
13 Nov 2014 » FreeBSD Duovero I2C
11 Nov 2014 » FreeBSD Duovero USB Wireless
09 Nov 2014 » FreeBSD Duovero Serial Ports
05 Nov 2014 » More FreeBSD on the Gumstix Duovero
05 Nov 2014 » FreeBSD on the Gumstix Duovero

General FreeBSD

30 Sep 2014 » FreeBSD on ARM