'회사일'에 해당되는 글 144건

  1. 2016.01.06 freeRTOS + lwip or freeRTOS+TCP
  2. 2015.12.24 onvif nvc nvt nvs nva
  3. 2015.12.11 gSOAP ... 두번째 검색
  4. 2015.12.09 lwip + freeRTOS
  5. 2015.11.20 lwip / uip
  6. 2015.11.12 비선점형 마이컴 OS - csrtos
  7. 2015.11.11 uclinux / linux 벤치마킹
  8. 2015.11.11 µC/OS-II
  9. 2015.11.10 uclinux
  10. 2015.11.10 freeRTOS / OpenRISC
회사일/uclinux & rtos2016. 1. 6. 15:16

두개에 대한 벤치마크는 안보이지만...

어느걸 택하던 상관없다 일려나?(좋은 의미던 나쁜 의미던..)


lwIP


lwIP is also a good stack when used in its intended, memory constrained, environment. It has a higher throughput than uIP, but also has a larger ROM and RAM footprint. Although the footprint is larger than uIP it is still smaller than most commercial TCP/IP offerings. In particular, lwIP saves RAM by making large data buffers by chaining smaller buffers together.

Most (if not all) the FreeRTOS demos listed here make use of quite an old lwIP version. There are however contributed demos available in the FreeRTOS Interactive forums that use a more up to date lwIP code base. Further lwIP related uploads would be gratefully received.


On the negative side, lwIP is undeniably quite complex to use at first, but time invested in its use will pay dividends in future projects. lwIP is also a moving target because it is constantly being developed and updated (which is not necessarily a negative thing).


[링크 : http://www.freertos.org/embeddedtcp.html]

[링크 : http://lwip.wikia.com/wiki/LwIP_Application_Developers_Manual]

[링크 : http://lwip.wikia.com/wiki/LwIP_Wiki]

freeRTOS+TCP 패키지

[링크 : http://www.freertos.org/FreeRTOS-Plus/FreeRTOS_Plus_TCP/index.html]

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회사일/ONVIF2015. 12. 24. 09:47

Network Video Client (NVC)

Network Video Transmitters (NVT)

Network Video Storage (NVS)

Network Video Analytics (NVA)



storage에 빼앗긴 S 때문에..

Streamer나 Server 등을 쓸 수 없어 Transmitter가 된 것 같은 기분?


ONVIF Device Manager is a Network Video Client (NVC) to manage Network Video Transmitters (NVT), Network Video Storage (NVS) and Network Video Analytics (NVA) devices. Implements Discovery, Device, Media, Imaging, Analytics, Events and PTZ services. Written in C# and uses ffmpeg for media decoding.


[링크 : http://sourceforge.net/projects/onvifdm/]


+

[링크 : http://blog.naver.com/msnayana/80155230549]


+

[링크 : http://www.onvif.org/Documents/Specifications.aspx]

    [링크 : http://www.onvif.org/specs/DocMap-2.6.1.html]



Implementation of ONVIF Core Specification v1.02 or later is required for conformance to Profile S.

Implementation of ONVIF Core Specification v2.3 or later is required for conformance to Profile C.

Implementation of ONVIF Network Interface Specification Set v2.4 or later is required for conformance to Profile G.

Implementation of ONVIF Network Interface Specification Set, version 2.5 or later is required for conformance to Profile Q


[링크 : http://www.onvif.org/Portals/0/documents/op/...ONVIF_Members-Profile_S_Specification.pdf]

[링크 : http://www.onvif.org/Portals/0/documents/specs/2013_12_ONVIF_Profile_C_Specification_v1-0.pdf]

[링크 : http://www.onvif.org/Portals/0/documents/specs/ONVIF_Profile_G_Specification_v1-0.pdf]

[링크 : http://www.onvif.org/portals/0/documents/specs/ONVIF_Profile_A_RC-Spec_v1-0.pdf]

[링크 : http://www.onvif.org/Portals/0/documents/specs/ONVIF_Profile_Q_Spec_RC_v1-2.pdf]

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회사일/ONVIF2015. 12. 11. 09:20

gSOAP은 단순(?)하게 C/C++에서 XML 을 편하게 연결해서 SOAP 서비스를 제공하도록 해주는

프레임 워크? 라고 해야하려나?

단지 이걸 onvif에서 사용하는 것일뿐

gSOAP이 onvif는 아니다.


[링크 : https://en.wikipedia.org/wiki/GSOAP] generic XML and SOAP

[링크 : https://en.wikipedia.org/wiki/SOAP] Simple Object Access Protocol

[링크 : http://www.w3schools.com/xml/xml_wsdl.aspWeb Services Description Language

[링크 : https://en.wikipedia.org/wiki/Web_Services_Description_Language]


[링크 : http://j2enty.tistory.com/category/Dev%20Tech./SOAP]

[링크 : http://sourceforge.net/projects/gsoap2/]

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회사일2015. 12. 9. 13:36

두개가 태생이 같은건 아닐텐데..은근 붙어서 검색이 되네..

일단 가장 중요(?)한 것은.. bsd license


Developing applications on STM32Cube with LwIP TCP/IP stack

[링크 : http://www.st.com/st-web-ui/static/active/jp/resource/technical/document/user_manual/DM00103685.pdf


Using the lwIP Network Stack

Atmel SAM4E

[링크 : http://www.atmel.com/Images/Atmel-42233-Using-the-lwIP-Network-Stack_AP-Note_AT04055.pdf]


[링크 : http://lwip.wikia.com/wiki/LwIP_Wiki]

[링크 : http://savannah.nongnu.org/projects/lwip/]



Some demos use uIP and some lwIP as the underlying embedded TCP/IP stack - and pre-date the introduction of FreeRTOS+TCP (FreeRTOS's own scalable TCP/IP stack).

[링크 : http://www.freertos.org/embeddedtcp.html]

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회사일/IP camera2015. 11. 20. 15:16

light weight ip

micro ip


[링크 : http://savannah.nongnu.org/projects/lwip/]

[링크 : https://en.wikipedia.org/wiki/LwIP]


[링크 : https://en.wikipedia.org/wiki/UIP_(micro_IP)]

[링크 : https://github.com/adamdunkels/uip]

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회사일/uclinux & rtos2015. 11. 12. 15:18

원본을 찾기 힘드네...

그런데 비선점도 rtos가 될 수 있는건가?


[링크 : http://www.mtcnet.net/~henryvm/4AvrOS/]

    [링크 : http://roboticslab.tistory.com/6]

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회사일/uclinux & rtos2015. 11. 11. 11:12

ppt 에 추가된 내용으로

부팅 시간이

linux 2.6.7 - 437.11

uclinux 2.6.7 - 415.16

으로 22초 정도 단축된다.


context switching 에 소요되는 시간인

linux - avg 110us

uclinux - avg 20us

에 비하면... 의외로 미미한 수준?


MMU 지원을 받지 못해 소스를 수정해야 하는 오버헤드를 생각하면

그리 큰 성능향상이라고 하긴 그럴 듯..


[링크 : http://bit.sparcs.org/~gangster/publication/uc_linux_fall.ppt]

[링크 : http://opensrc.sec.samsung.com/document/uc-linux-04_sait.pdf]

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회사일/uclinux & rtos2015. 11. 11. 08:39


[링크 : http://micrium.com/rtos/ucosii/overview/]

[링크 : https://www.csie.ntu.edu.tw/~d6526009/ucOS2/Chapter-1.pdf]


+

[링크 : http://repilria.tistory.com/382]

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회사일/uclinux & rtos2015. 11. 10. 09:11

What is uClinux?


The original uClinux was a derivative of Linux 2.0 kernel intended for microcontrollers without Memory Management Units (MMUs). However, the Linux/Microcontroller Project has grown both in brand recognition and coverage of processor architectures. Today's uClinux as an operating system includes Linux kernel releases for 2.0 2.4 and 2.6 as well as a collection of user applications, libraries and tool chains.


[링크 : http://www.uclinux.org/description/]

[링크 : http://www.uclinux.org/]


[링크 : http://www.uclinux.org/pub/uClinux/]

[링크 : http://sourceforge.net/projects/uclinux/]


[링크 : https://wiki.kldp.org/wiki.php/WhyIsMallocDifferentUnderUclinux]


[링크 : http://goo.gl/pzUmg] atmega1284p uclinux



+

[링크 : https://wiki.kldp.org/wiki.php/%B8%AE%B4%AA%BD%BA%C4%BF%B3%CE#s-5]

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회사일/uclinux & rtos2015. 11. 10. 09:05


FreeRTOS is designed to be small and simple. The kernel itself consists of only three or four C files. To make the code readable, easy to port, and maintainable, it is written mostly in C, but there are a few assembly functions included where needed (mostly in architecture-specific scheduler routines).


Supported architectures

ARM architecture

 ARM7

 ARM9

 ARM Cortex-M0

 ARM Cortex-M0+

 ARM Cortex-M3

 ARM Cortex-M4

 ARM Cortex-A

Atmel

 Atmel AVR

 AVR32

 SAM3

 SAM4

 SAM7

 SAM9

 SAM D20

 SAM L21

Intel

 x86

 8052


[링크 : https://en.wikipedia.org/wiki/FreeRTOS]

[링크 : http://www.freertos.org/]

[링크 : http://sourceforge.net/projects/freertos/]


Linux support

The mainline Linux kernel gained support for OpenRISC in version 3.1.[17] The implementation merged in this release is the 32-bit OpenRISC 1000 family (or1k).[18] Previously OpenRISC 1000 architecture, but this has now been superseded by the mainline port.


RTOS support

A number of real-time operating systems have been ported to OpenRISC, including RTEMS, FreeRTOS and eCos.


QEMU support

Since version 1.2 [19] QEMU supports emulating OpenRISC platforms.


[링크 : https://en.wikipedia.org/wiki/OpenRISC]

[링크 : http://openrisc.io/]

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