c language for embedded systems

... Trang 1Practical Statecharts in C/C++: Quantum Programming for Embedded SystemsTrang 2Table of ContentsPractical Statecharts in C/C++−Quantum Programming for Embedded Systems 1 Preface 3 Mission ... C.4 Resources 267 Bibliography 268 Practical Statecharts in C/C++: Quantum Programming for Embedded Systems vii Trang 9Practical Statecharts in C/C++−QuantumProgramming for Embedded Systems appropriate ... Exit Actions 34 Practical Statecharts in C/C++: Quantum Programming for Embedded Systems i Trang 3Table of ContentsChapter 2: A Crash Course in Statecharts 2.2.5 Transition Execution Sequence 35

Ngày tải lên: 12/08/2014, 21:21

... Duby, Carolyn 2001 Class 203: Implementing UML statechart diagrams Proceedings of Embedded Systems Conference, Fall San Francisco [EC++] Embedded C++ Technical Committee 2001 http://www.caravan.net/ec2plus ... Hardware/Software Codesign Advancements in microelectronics have recently enabled the integration of complete, complex systems on a single chip. To cope with the continuously increasing complexity of such systems, ... identical code for "C+" and C++ virtual calls The following code fragment highlights this overhead for a typical CISC (complex instruction set computing) processor (x86 running in protected

Ngày tải lên: 12/08/2014, 21:21

... Free Software tools for embedded systems Free Software tools for embedded systems Thomas Petazzoni / Michael Opdenacker Free Electrons http://free­electrons.com/ Created with OpenOffice.org 2.x Free Software tools for embedded systems ... © Copyright 2004­2008, Free Electrons Creative Commons Attribution­ShareAlike 2.5 license Jan 24, 2008 http://free­electrons.com Free Software tools for embedded systems C library for the target device C library options ... glibc uClibc Compiled statically glibc uClibc Plain “hello world” 4.6 K 4.4 K 475 K 25 K Busybox 245 K 231 K 843 K 311 K Free Software tools for embedded systems © Copyright 2004­2008, Free Electrons

Ngày tải lên: 20/10/2013, 00:15

... defined inthe architecture section of the CIC The translation rule of HW-interfacingcode for a specific HW is separately specified as a HW-interface library code.Note that some HW accelerators work ... “interrupt clear.” Figure 8.12a shows the generated interfacing code for the IDCT withinterrupt Note that the interfacing code does not access the HW to checkthe completion of IDCT, but checks the ... task scheduling codes tailored for the target OS Each step of CICtranslator will be explained in this section target-8.5.1 Generic API Translation Since the CIC task code uses generic APIs for

Ngày tải lên: 02/07/2014, 15:20

... System platform (HW and SW) Function space Mapped Function instance Function instance Function space Mapped Platform (architectural space) Platform instance Platform (architectural space) Platform ... environment for a com- plex MPSoC architecture. The target application corresponds to the H.264 encoder, also called AVC (advanced video coding). Firstly, the specification of the target architecture ... performance, as it implied the fewest clock cycles during the execution for all the communi- cation mapping schemes. The Mesh NoC attained the worse performance in case of mapping all the communication

Ngày tải lên: 02/07/2014, 15:20

... [19] to schedule a concurrent specification on computa-tional resources that provide limited concurrency The QSS considers a sys-tem to be specified as a set of concurrent processes communicating ... prove conclusivelythe formula’s correctness because that would require exhaustively analyzing Trang 2traces The automatic trace analyzer can be used in concert with model ers It can perform property ... register_scheduler(ltime); Trang 7components via ports There are two descriptions of component tion: atomic components and composite components An atomic componentcomposi-is a block specified in some language

Ngày tải lên: 02/07/2014, 15:20

... function model and OpenModelica Trang 10convenient, component-oriented modeling of complex physical systems, e.g.,systems containing mechanical, electrical, electronic, hydraulic, thermal, con-trol, ... simulation performance, and the accuracy can be quicklyanalyzed The untimed METRO II UMTS functional model contains 12 processeswhile the architectural model may contain up to 26 processes This ... performed by the remote calling of a set ofservices provided by OpenModelica over a CORBA connection [18] estab-lished between the tools The architecture model includes generic electronic control

Ngày tải lên: 02/07/2014, 15:20

... TPs, which are connected via a CCU to a circuit-switched NoC The urable fabric is connected to the AMBA system through a AHB–NoC bridgeinterface Configurations, generated at design-time can be ... on-chip access and avoids the bottleneck of off-chip globalmemory Multicore coherent caching allows a page of shared memory,cached on a specific tile, to be accessed via load/store references ... switch that connects Trang 11the core to the iMesh on-chip network The combination of a core and aswitch form the basic building block of the Tilera Processor: the tile Eachcore is a fully functional

Ngày tải lên: 02/07/2014, 15:20

... specialized clock resources in theFPGA These clock resources typically include phase-locked loops for clocksynchronization and dedicated clock distribution paths and may be sharedbetween transceivers ... .ucf .ngc PR-enabled NGDBuild, Map, and PAR .ncd PRMergeDesign + PR-enabled bitgen Meta-information C code gcc + objcopy EDK genace.tcl partial.bit bit merged.ace configure.elf static.usedfor ... called the “context logic.” The context logic is necessary to pro-vide the context of the reconfigurable module, so that hierarchical namesin the design and location constraints for clock signals

Ngày tải lên: 02/07/2014, 15:20

... afirst step, we discuss current techniques used for DSML specification, showexamples for the different specification styles, and discuss the key conceptsrequired for the formal specification of DSMLs ... specification can be expressed as a 5-tuple L =< A, C, S, M S , M C > consisting of abstract syntax (A), concrete syntax (C), tactic mapping (M C ), semantic domain (S), and semantic mapping ... ofembedded systems Proceedings of the IEEE, 91(1):11–28, 2003 8 R Alur, T Dang, and F Ivancic Counter-example guided predi-cate abstraction of hybrid systems Theoretical Computer Science (TCS),

Ngày tải lên: 02/07/2014, 15:20

... Design for Embedded Systems 1 Mode_Switches(Mode_src... local_clocks) } 6 union {clki − > v(clki) | 7 in local_clocks -(tr.resets intersect local_clocks) } FIGURE 14.14 Execution: Stepping ... ⊇ E[conforms/D.conforms] (14.35) Nicolescu/Model-Based Design for Embedded Systems 67842_C014 Finals Page 459 2009-10-2 Semantics of Domain-Specific Modeling Languages 459 TABLE 14.1 Basic Set ... described a concretization of this framework using structured LP with carefully chosen composition operators. This approach allows formal analysis and correct-by- construction of structural semantics.

Ngày tải lên: 02/07/2014, 15:20

... ordering of contracts, we can compute greatest lower boundsand least upper bounds, which correspond to taking the conjunction Trang 7and disjunction of contracts, respectively For contracts C1= (A1, ... andC2= (A2, G2) (in canonical form), we have The resulting contracts are in canonical form Conjunction of contractsamounts to taking the union of the assumptions, as required, and can there-fore ... Trang 4systems In this case, the need for high-quality, zero-defect software callsfor techniques in which component specification and integration are sup-ported by clean mathematics that encompass

Ngày tải lên: 02/07/2014, 15:20

... of components, heterogeneous architec-tures, and systems specific to different application domains, for example, electronic, mechanics, optics, and radio frequency (RF) integrated on the same chip ... component Continuous component (b) Discrete component execution model Co-simulation interface Co-simulation bus Co-simulation interface Co-simulation backplane Continuous component execution model ... occurrence) then these processes have to be executed in parallel Execu-tions often occur on sequential machines that can only execute one instruc-tion at a time (therefore, one process) The consequence

Ngày tải lên: 02/07/2014, 15:20

... model M cosim )} −M d = (N interfaceCDI , M interfaceDDI , M cosim ) −EIC = {((N interface, “inc,1), (N interfaceCDI, “inc,1)); ; ((N interface, “inc,n), (N interfaceCDI, “inc,n)); ((N ... OutPorts DDI,ip cosim ∈ InPorts cosim}∪ {((M cosim , op cosim ), (N interfaceCDI , ip CDI ))|N interfaceCDI, M cosim ∈ D, op cosim ∈ OutPorts cosim,ip CDI ∈ InPorts CDI,}∪ {((M cosim , op cosim ), (N ... Interface • The State Event Indication and Time Sending block (SETS) • The Signal Conversion and Data Exchange block (SCDE) • The Event Detection block (DED) • The Context Switch block (CS) For

Ngày tải lên: 02/07/2014, 15:20

... component actors conform to the actor abstract semantics, these actors can be opaque composite actors that internally contain SR or DE models. Moreover, a CT model can now form an opaque composite actor ... Thus, if those actors conform to the actor abstract semantics, then so does the opaque composite actor containing the director. Nicolescu/Model-Based Design for Embedded Systems 67842_C017 Finals ... the Cen- ter for Hybrid and Embedded Software Systems (CHESS) at UC Berke- ley, which receives support from the National Science Foundation (NSF Nicolescu/Model-Based Design for Embedded Systems

Ngày tải lên: 02/07/2014, 15:20

... direct code evaluation, such as for active surface areacalculations • Through simulation (including behavioral simulation) for accurateperformance evaluation (gain, bandwidth, distortion, etc.) ... hierarchical structural level n+ 1 inFigure 19.4, is used to quantify how the IP block should carry out thedefined function Performance criteria are composed of functional specifi- cations and performance ... performance specifications: for example in an amplifier, S will Trang 10TABLE 19.3AMS/MT IP Block Facets Function definition Class of functions to which the IP block belongs Performance criteria

Ngày tải lên: 02/07/2014, 15:20

... architectural and technologicaltradeoffs These requirements emphasize the need for high-level models for optical,electronic, and electromechanical components, accurate and computationallyefficient ... free-space optoelectronic systems.These are systems that incorporate electronic digital and analog components,optoelectronic interface devices, such as laser and detector arrays, and free-space optical ... this approach brings the challenge of choosing which Trang 14CAD Tools for Multi-Domain Systems on Chips 649circuit/component modeling techniques will be optimal for accurate and fastcharacterization

Ngày tải lên: 02/07/2014, 15:20

... is simply a MEM Nicolescu/Model-Based Design for Embedded Systems 67842_C020 Finals Page 675 2009-10-2 CAD Tools for Multi-Domain Systems on Chips 675 (micro-electrical-mechanical) phase grating ... of mechanical MEMs, optics, and electronic feedback. The last example shows the power of the angular spec- trum technique to model diffractive optical systems with the speed and accu- racy required ... this system could act as a switch, an optical scanner, Nicolescu/Model-Based Design for Embedded Systems 67842_C020 Finals Page 670 2009-10-2 670 Model-Based Design for Embedded Systems (a) 23

Ngày tải lên: 02/07/2014, 15:20

... 21.4. Accelerometer Accelerometer Gyroscope Gyroscope Accelerometer Gyroscope X-axis Y-axis Z-axis Output circuitry Output circuitry Output circuitry Output circuitry Output circuitry Interface Interface ... Interface Interface Interface Interface Interface IBIS SoC bus Master Communication interfaces Processor Memory Output circuitry FIGURE 21.4 IMU structure. Nicolescu/Model-Based Design for Embedded ... References 718 21.1 Introduction The growing importance of microelectromechanical systems (MEMS) in a wide range of applications, which combine extreme sensitivity, accuracy, and compactness,

Ngày tải lên: 02/07/2014, 15:20

... to C necessary for targeting an embedded environment, and the common components of a successful development project. C is the language of choice for programming larger microcontrollers (MCU), ... the prescalar and starting the clock are tasks of the software developer. Knowing the processor clock frequency, and choosing correct prescalar values, you can achieve accurate timer clock periods. The ... instructions to the COPCR register. Interestingly, the COP watchdog is dependent upon the system clock; a clock monitor circuit resets the MCU if the clock stops, and thereby renders the COP watchdog...

Ngày tải lên: 22/12/2013, 02:17