This a USB core stack for
the built-in USB device of LPC214x microcontrollers.
It handles the hardware interface and
USB enumeration/configuration.
Also included are application examples like
a USB joystick HID and USB serial port emulation.
The source code for this package is located in src/gov/nist/sip/proxy. The proxy
is a pure JAIN-SIP application: it does not need proprietary nist-sip
classes in addition of those defined in JAIN-SIP 1.1, you can substitute
the NIST-SIP stack by another JAIN-SIP-1.1 compliant stack and it should
interoperate.
he proxy can act as presence server and be able to process NOTIFY and
SUBSCRIBE requests. If this parameter is disabled, the proxy will simply
forward those kind of requests following the appropriate routing decision.
he source code for this package is located in src/ directory. The
JAIN-SIP-SERVICES is a JAIN-SIP application: it does not need proprietary nist-sip
classes in addition of those defined in JAIN-SIP 1.1, you can substitute
the NIST-SIP stack by another JAIN-SIP-1.1 compliant stack and it should
interoperate.
Jitter is extremely important in systems using PLL-based
clock drivers. The effects of jitter range from not having any
effect on system operation to rendering the system completely
non-functional. This application note provides the reader
with a clear understanding of jitter in high-speed systems. It
introduces the reader to various kinds of jitter in high-speed
systems, their causes and their effects, and methods of reducing
jitter. This application note will concentrate on jitter in PLL-based frequency synthesizers.
Cypress Semiconductor makes a variety of PLL-based clock
generators. This application note provides a set of recommendations
to optimize usage of Cypress clock devices in a
system. The application note begins with recommended termination
techniques for clock generators. Subsequently, power
supply filtering and bypassing is discussed. Finally, the application
note provides some recommendations on board
layout.
A self-designed control of PC parallel port communication is introduced in this paper.Taking advantage of the MFC ActiveX technology, it is developed in Visual C++ and offset the scarcity of the control of PC parellel paort communication. An example of frequency measurement shows the detail procedure and application of the control.
This C/C++ code example demonstrates porting standard C software to the S60 platform. In this
example, an open source FTP library (ftplib and qftp) written in C has been ported to Open C. In
addition, a simple UI has been written in Symbian C++ to provide a GUI application.
MemoryMonitor demonstrates the use of the java.lang.management API
in observing the memory usage of all memory pools consumed by
the application.
This simple demo program queries the memory usage of each memory pool
and plots the memory usage history graph.
To run the MemoryMonitor demo
java -jar <JDK_HOME>/demo/management/MemoryMonitor.jar
The sfloppy sample is a super floppy driver that resides in the directory \\Ntddk\Src\Storage\sfloppy. It is a class driver for Super Floppy disk drives. It sits a level above the port driver (ATAPI, USB, etc) in the driver stack, and brokers communication between the application level and the port driver. The floppy driver takes requests from filesystem drivers and then sends the appropriate SCSI_REQUEST_BLOCK (SRB) to the port driver. It is compatible with x86 and IA64 platforms.
The development of a data acquisition card based on USB bus is introduced in this article.It first describes the configuration and principle of this card in the part of hardware design,and then the application program and device driver in the part of software design.Data acquisition program in firmware is also discussed.Finally,this data acquisition card is tested and evaluated in a program developed by Lab Windows CVI,which shows that this car is stable and reliable
