To put together a Linux-based IoT system, you need a quick and easy approach to getting a base system up and running. And while you are at it, you also need to keep an eye on the flash footprint – some IoT platforms only have 64MB flash memory. You will want to keep control of the software included in the system, and you’ll want to be able to add your own applications easily. Last but not least, you will need to pay attention to security and comply with both open source and proprietary licenses.
The Buildroot build system [1] will help you with these tasks. Buildroot, which emerged in the early 2000s from the µClinux and Busybox projects, focuses on creating systems with a minimal footprint. Buildroot is easier to use and conceptually simpler than Yocto (see the article on Yocto starting on p. 16 of this issue). If you don’t need Yocto’s expansive capabilities, with its modular layer system and other advanced features, and you just want to generate an OS for an embedded device, Buildroot is often the better choice.
Buildroot can generate:
• a cross-compilation toolchain
• a root file system
• a Linux kernel image
• a bootloader for the target device
A selection tool based on the menu system of the Linux kernel lets you specify the required packages and the associated configuration options. This menu-driven approach helps ensure you have the components you need and makes it easy to leave out any components you don’t need to minimize the flash footprint.
Denne historien er fra #263/Ocober 2022: Build an IoT Linux-utgaven av Linux Magazine.
Start din 7-dagers gratis prøveperiode på Magzter GOLD for å få tilgang til tusenvis av utvalgte premiumhistorier og 9000+ magasiner og aviser.
Allerede abonnent ? Logg på
Denne historien er fra #263/Ocober 2022: Build an IoT Linux-utgaven av Linux Magazine.
Start din 7-dagers gratis prøveperiode på Magzter GOLD for å få tilgang til tusenvis av utvalgte premiumhistorier og 9000+ magasiner og aviser.
Allerede abonnent? Logg på
Tracking your finances with plain text accounting Plain Numbers
If you're tired of tinkering with spreadsheets, using hledger and plain text accounting offers a simpler method for managing your finances without vendor lock-in
Dependency resolution with apt-get and apt Evolutionary Tale
Over the past 30 years, the apt family has played an important role in dependency resolution for Debian distros.
Cryptomining with Litecoin Traveling Lite
Although not as popular as headliners like Bitcoin and Ethereum, Litecoin is one of the oldest crytocurrencies, and it offers some useful features, such as dual-mining with Dogecoin.
Software Update SnoopGod
SnoopGod delivers an Ubuntu-based pentesting distribution with an emphasis on security education.
Kernel Trouble
This deep look at how intruders attack an out-of-date kernel should be enough to convince you of the need to stay vigilant.
Using Wake-on-LAN for a NAS backup Power Saver
Put your backup server to sleep when you don't need it and then wake it on demand using the Wake-on-LAN feature built into network adapters.
Time Travel
Mike Schilli uses a Go program to check whether a strategy for trading stocks is making gains or losses on the basis of historical price data.
URL filtering with Pi-hole Into the Funnel
Supporting browser plug-ins, network-based DNS blockers like Pi-hole help protect you against online tracking and unwanted content.
Artificial intelligence on the Raspberry Pi Learning Experience
You don't need a powerful computer system to use Al. We show what it takes to benefit from Al on the Raspberry Pi and what tasks the small computer can handle.
MakerSpace Manage your greenhouse with a Raspberry Pi Pico W Sheltered Growth
You can safely assign some greenhouse tasks to a Raspberry Pi Pico W, such as controlling ventilation, automating a heater, and opening and closing windows.