This book is a hands-on introduction to the principles and practice of embedded system design using the PIC microcontroller. Packed with helpful examples and illustrations, it gives an in-depth treatment of microcontroller design, programming in both assembly language and C, and features advanced topics such as networking and REAL-Time operating systems. It is accompanied by a CD-ROM containing copies of all programs and software tools used in the text and a `student version of the C complier Designing Embedded Systems with PIC Microcontrollers: Principles and Applications is ideal for students of electronics, mechatronics and computer engineering. Engineers in industry and informed hobbyists will also find this book a valuable resource when designing and implementing both simple and sophisticated embedded systems using the PIC Microcontroller.
標(biāo)簽： introduction principles hands-on embedded
上傳時(shí)間： 2014-01-17
上傳用戶：wuyuying
The ability to write efficient, high-speed arithmetic routines ultimately depends upon your knowledge of the elements of arithmetic as they exist on a computer. That conclusion and this book are the result of a long and frustrating search for information on writing arithmetic routines for REAL-Time embedded systems. With instruction cycle times coming down and clock rates going up, it would seem that speed is not a problem in writing fast routines. In addition, math coprocessors are becoming more popular and less expensive than ever before and are readily available. These factors make arithmetic easier and faster to use and implement. However, for many of you the systems that you are working on do not include the latest chips or the faster processors. Some of the most widely used microcontrollers used today are not Digital Signal Processors (DSP), but simple eight-bit controllers such as the Intel 8051 or 8048 microprocessors.
標(biāo)簽： arithmetic high-speed ultimately efficient
上傳時(shí)間： 2014-11-30
上傳用戶：lizhen9880
從結(jié)構(gòu)上來(lái)說(shuō)，實(shí)時(shí)多任務(wù)操作系統(tǒng)包括兩部分，一部分為操作系統(tǒng)內(nèi)核(kernel)，即實(shí)時(shí)執(zhí)行程序(Real Time Executive:RTX)，另一部分是輸入輸出部分(I/O)(注意開(kāi)發(fā)系統(tǒng)不屬于操作系統(tǒng)的范疇)；嵌入式系統(tǒng)對(duì)I/O的需求通常比較小(無(wú)文件系統(tǒng)需求)，因此很多實(shí)時(shí)多任務(wù)操作系統(tǒng)本質(zhì)上就是一個(gè)實(shí)時(shí)執(zhí)行程序，如AMX(Kadak)，VRTX(Microtec)，iRMX(Intel)等(這里的X即:eXecutive)，如果純粹從kernel的角度來(lái)考察目前流行的各種實(shí)時(shí)多任務(wù)操作系統(tǒng)的性能，它們的效率差別都不大。 在市面上可以得到一些RTX的源代碼(有用C實(shí)現(xiàn)的，有用匯編實(shí)現(xiàn)的，還有用PL/M語(yǔ)言實(shí)現(xiàn)的)，從internet上也可以蕩一些下來(lái)(我介紹一個(gè)站點(diǎn)www.eg3.com，堪稱世界電子工程師資源寶庫(kù))，下面我要介紹的一個(gè)RTX版本(我命名為SRTX:short RTX)，可以說(shuō)是RTX中的元老級(jí)產(chǎn)品了，來(lái)自某研究所，九十年代初他們到美國(guó)考察，從美國(guó)某公司購(gòu)得。五年以前，SRTX在國(guó)內(nèi)有售，許多搞工控的研究所利用SRTX開(kāi)發(fā)了一些大型或小型的產(chǎn)品,這里介紹的SRTX我作了一些簡(jiǎn)化和改動(dòng).
標(biāo)簽：
上傳時(shí)間： 2015-12-09
上傳用戶：wang5829
In a preemptive priority based RTOS, priority inversion problem is among the major sources of deadline violations. Priority inheritance protocol is one of the approaches to reduce priority inversion. Unfortunately, RTOS like uC/OS can’t support priority inheritance protocol since it does not allow kernel to have multiple tasks at the same priority. Although it has different ways to avoid priority inversion such as priority ceiling protocol, developers still have some difficulties in programming real time applications with it. In this paper, we redesign the uC/OS kernel to provide the ability to support round robin scheduling and implement priority inheritance semaphore on the modified kernel. As result, we port new kernel with priority inheritance semaphore to evaluation board, and evaluate the execution time of each of the kernel service as well as verify the operations of our implementation.
標(biāo)簽： priority preemptive inversion problem
上傳時(shí)間： 2015-12-14
上傳用戶：氣溫達(dá)上千萬(wàn)的
This application report describes the use of Timer_A3 to decode RC5 and SIRC TV IR remote control signals. The decoder described in this report is interrupt-driven and operates a background function using specific features the Timer_A3. Only a small portion of the MSP430 CPU?s nonREAL-Time resources is used. Specific hardware bit-latching capabilities of the Timer_A3 module are used for REAL-Time decoding of the IR data signal, independent and asynchronous to the CPU. CPU activity and power consumption are kept to an absolute minimum level. The Timer_A3 decoder implementation also allows other tasks to occur simultaneously if required. The solutions provided are written specifically for MSP430x11x(1) and MSP430x12x derivatives, but can be adapted to any other MSP430 incorporating Timer_A3. 電視遙控器設(shè)計(jì)基於MSP430
標(biāo)簽： application describes Timer_A control
上傳時(shí)間： 2014-01-01
上傳用戶：qq21508895
celestia源代碼，Celestia, a REAL-Time 3D space simulation featuring a database of over 100000 stars, nearly a hundred solar system, objects, and a complete catalog of extrasolar planets.
上傳時(shí)間： 2013-12-26
上傳用戶：縹緲
Rao-Blackwellised Particle Filters (RBPFs) are a class of Particle Filters (PFs) that exploit conditional dependencies between parts of the state to estimate. By doing so, RBPFs can improve the estimation quality while also reducing the overall computational load in comparison to original PFs. However, the computational complexity is still too high for many REAL-Time applications. In this paper, we propose a modified RBPF that requires a single Kalman Filter (KF) iteration per input sample. Comparative experiments show that while good convergence can still be obtained, computational efficiency is always drastically increased, making this algorithm an option to consider for REAL-Time implementations.
標(biāo)簽： Particle Filters Rao-Blackwellised exploit
上傳時(shí)間： 2016-01-02
上傳用戶：refent
With this foundation, you explore a development model that addresses the complete range of issues in the design of embedded communications software, including REAL-Time operating systems, hardware and software partitioning, layering, and protocol stacks.
標(biāo)簽： development foundation addresses complete
上傳時(shí)間： 2016-01-16
上傳用戶：zyt
實(shí)時(shí)系統(tǒng)分析與設(shè)計(jì)，《REAL-Time SYSTEMS DESIGN AND ANALYSIS》THIRD EDITION Phillip A. Laplante
標(biāo)簽： 實(shí)時(shí)系統(tǒng) 分
上傳時(shí)間： 2013-12-09
上傳用戶：xmsmh
Sofia-SIP is an open-source SIP User-Agent library, compliant with the IETF RFC3261 specification. It can be used as a building block for SIP client software for uses such as VoIP, IM, and many other REAL-Time and person-to-person communication services. The primary target platform for Sofia-SIP is GNU/Linux. Sofia-SIP is based on a SIP stack developed at the Nokia Research Center.
標(biāo)簽： specification open-source User-Agent Sofia-SIP
上傳時(shí)間： 2016-03-20
上傳用戶：洛木卓
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