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.
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
#if !defined(AFX_GAQUEEN_H__C26AE0A3_F9B4_426F_A324_B460CC7946CB__INCLUDED_)
#define AFX_GAQUEEN_H__C26AE0A3_F9B4_426F_A324_B460CC7946CB__INCLUDED_
#if _MSC_VER > 1000
#pragma once
#endif // _MSC_VER > 1000
class CGAQueen
{
public:
CGAQueen(int nPopulation,int nIteration,float Mutation,int mChBoard)
virtual ~CGAQueen()
void Clear() // to clear chess board with 0 value
void InitialPopulation() // to create the first and initial randompopulation
void FillArea(int index) // to fill chess board with desired chromosome
int CostFunc(int index) // determine the cost of matrix[index][index]
void PopulationSort() // to sort population from the best to the worst
void GenerateCrossOverMatrix() // a way to create children from parent is CcrossOver
void Mating() // to create children from parents
void Ap
This document outlines what is necessary to install and run the LEACH protocol on version
2.27 of ns2. At the time of this writing, this is the newest version of ns2. The LEACH implementation
was written as a stand-alone application. Thus, in the past a version compiled for LEACH may or may
not work for other protocols. In addition, the original version of LEACH was compiled for version
2.5b which is an outdated version of ns2.
In recent years large scientific interest has been
devoted to joint data decoding and parameter estimation
techniques. In this paper, iterative turbo decoding joint
to channel frequency and phase estimation is proposed.
The phase and frequency estimator is embedded into the
structure of the turbo decoder itself, taking into consideration
both turbo interleaving and puncturing. Results
show that the proposed technique outperforms conventional
approaches both in terms of detection capabilities and
implementation complexity.
The Tremor Vorbis I stream and file decoder provides an embeddable, integer-only library [libvorbisidec] intended for decoding all current and future Vorbis I compliant streams. The Tremor libvorbisidec library exposes an API intended to be as similar as possible to the familiar vorbisfile library included with the open source Vorbis reference libraries distributed for free by Xiph.org.
Tremor can be used along with any ANSI compliant stdio implementation for file/stream access, or use custom stream i/o routines provided by the embedded environment. Both uses are described in detail in this documentation.
The Tremor Vorbis I stream and file decoder provides an embeddable, integer-only library [libvorbisidec] intended for decoding all current and future Vorbis I compliant streams. The Tremor libvorbisidec library exposes an API intended to be as similar as possible to the familiar vorbisfile library included with the open source Vorbis reference libraries distributed for free by Xiph.org.
ogg vorbis decoder, evc project
Tremor can be used along with any ANSI compliant stdio implementation for file/stream access, or use custom stream i/o routines provided by the embedded environment. Both uses are described in detail in this documentation.
