Difference between revisions of "Embedded"

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An embedded system is a computer system designed to perform one or a few dedicated functions often with real-time computing constraints. It is embedded  as part of a complete device often including hardware and mechanical parts. By contrast, a general-purpose computer, such as a personal computer (PC), is designed to be flexible and to meet a wide range of end-user needs. Embedded systems control many devices in common use today. See here for further description.
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This page is about embedded systems with operating system (Nintendo platforms, Linux Embedded, Windows embedded). For microcontroller programming, i.e. embedded systems without operating system, see [[TARGET Embedded]].
  
As the general purpose systems (PCs) are becoming smaller and smaller and the embedded systems become more and more
 
powerful (and universally usable devices), the border between embedded systems and general purpose systems will become
 
more and more unsharp in future. Also a point of discussion would be to which section smart phones are to be assigned.
 
  
The original EMBEDDED topic has been moved to [[TARGET Embedded]] (Embedded Systems w/o OS)
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An '''embedded system''' is a computer system designed to perform one or a few dedicated functions, often with real-time computing constraints. It is embedded as part of a complete device often including hardware and mechanical parts.
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In contrast, a '''general-purpose computer''' (such as a PC), is designed to be flexible and to meet a wide range of end-user needs. Embedded systems control many devices in common use today. See [[Wikipedia:Embedded System]] for further description.
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As general purpose systems (PCs) are becoming smaller and smaller and embedded systems become more and more powerful (and universally usable devices), the border between embedded systems and general purpose computers will blur in future. Also a point of discussion would be to which section smart phones will end up.
 +
 
 +
We can divide embedded systems into several sections:
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== Embedded systems without general purpose operating system (OS)==
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For these devices, a special target in FPC exists [[TARGET Embedded]]
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* [[Ultibo core]]
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== Nintendo platforms ==
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For thes devices, special targets exist in FPC.
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Also there exist specially built crosscompilers for the X86 Windows platform:
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* [http://en.wikipedia.org/wiki/Game_Boy_Advance Gameboy Advance] (OS_TARGET=gba CPU_TARGET=arm BINUTILSPREFIX=arm-eabi)
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* Main processor: [[ARM7tdmi]])
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* Sub processor: [[Z80]] [ftp://ftp.freepascal.org/pub/fpc/dist/2.4.2/arm-gba/arm-gba-fpc-2.4.2.i386-win32.zip arm-gba-fpc-2.4.2.i386-win32.zip]
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* [http://en.wikipedia.org/wiki/Nintendo_DS Nitendo DS] (OS_TARGET=nds CPU_TARGET=arm BINUTILSPREFIX=arm-eabi)
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* Main processor: [[ARM-Architektur|ARM]]946E-S (67 MHz, in DSi: 133 MHz)
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* Sub processor: ARM7TDMI (33 MHz) [ftp://ftp.freepascal.org/pub/fpc/dist/2.4.2/arm-nds/arm-nds-fpc-2.4.2.i386-win32.zip arm-nds-fpc-2.4.2.i386-win32.zip]
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==Embedded systems with a general purpose operating system==
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There are several operating systems commonly used in embedded systems
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===Embedded Linux===
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Here several flavours exist:
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From (slightly to radical) slimmed down desktop Linux distributions (like Debian) to even slimmer variants consisting of a Linux kernel and some compact tools packages like [http://www.busybox.net/ BusyBox]. Other variants like:
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* [http://www.rtlinuxfree.com/RTLinuxFree Open RTLinux] aim on enhancements of the real-time behaviour.
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* [[ARM Linux Embedded Systems]]
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* [[i386 Linux Embedded Systems]]
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===Embedded Windows===
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Here we have '''XPe''' (Windows XP Embedded) which behaves mostly like its desktop counterpart (i386 only) but offers the following benefits:
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* System Builder allows to include/exclude components to slim down the system
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* Readonly Filesystems supported for more robust operation
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* Licensing done in System Builder; no individual licensing at product rollout
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The successor is <please add>
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Another other branch is '''Windows-Mobile'''/'''Windows CE''' family of operating systems.
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Variants:
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* i386
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* ARM
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* MIPS
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==== See also ====
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* [[Windows Embedded Systems]]
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<to be extended>
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===Others===
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[[Category:Embedded]]

Latest revision as of 18:46, 16 March 2019

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This page is about embedded systems with operating system (Nintendo platforms, Linux Embedded, Windows embedded). For microcontroller programming, i.e. embedded systems without operating system, see TARGET Embedded.


An embedded system is a computer system designed to perform one or a few dedicated functions, often with real-time computing constraints. It is embedded as part of a complete device often including hardware and mechanical parts.

In contrast, a general-purpose computer (such as a PC), is designed to be flexible and to meet a wide range of end-user needs. Embedded systems control many devices in common use today. See Wikipedia:Embedded System for further description.

As general purpose systems (PCs) are becoming smaller and smaller and embedded systems become more and more powerful (and universally usable devices), the border between embedded systems and general purpose computers will blur in future. Also a point of discussion would be to which section smart phones will end up.

We can divide embedded systems into several sections:

Embedded systems without general purpose operating system (OS)

For these devices, a special target in FPC exists TARGET Embedded

Nintendo platforms

For thes devices, special targets exist in FPC. Also there exist specially built crosscompilers for the X86 Windows platform:

Embedded systems with a general purpose operating system

There are several operating systems commonly used in embedded systems

Embedded Linux

Here several flavours exist: From (slightly to radical) slimmed down desktop Linux distributions (like Debian) to even slimmer variants consisting of a Linux kernel and some compact tools packages like BusyBox. Other variants like:

Embedded Windows

Here we have XPe (Windows XP Embedded) which behaves mostly like its desktop counterpart (i386 only) but offers the following benefits:

  • System Builder allows to include/exclude components to slim down the system
  • Readonly Filesystems supported for more robust operation
  • Licensing done in System Builder; no individual licensing at product rollout

The successor is <please add>

Another other branch is Windows-Mobile/Windows CE family of operating systems.

Variants:
  • i386
  • ARM
  • MIPS

See also

<to be extended>

Others