This example shows how to update at regulate period the WWDG counter using theEarly Wakeup interrupt (EWI). The WWDG timeout is set to 262ms, refresh window set to 41h and the EWI isenabled. When the WWDG counter reaches 40h the EWI is generated and in the WWDGISR the counter is refreshed to prevent a WWDG reset and led connected to PC.07is toggled.The EXTI line9 is connected to PB.09 pin and configured to generate an interrupton falling edge.In the NVIC, EXTI line9 to 5 interrupt vector is enabled with priority equal to 0and the WWDG interrupt vector is enabled with priority equal to 1 (EXTI IT > WWDG IT). The EXTI Line9 will be used to simulate a software failure: once the EXTI line9event occurs (by pressing Key push-button on EVAL board) the correspondent interruptis served, in the ISR the led connected to PC.07 is turned off and the EXTI line9pending bit is not cleared. So the CPU will execute indefinitely EXTI line9 ISR andthe WWDG ISR will never be entered(WWDG counter not updated). As result, when theWWDG counter falls to 3Fh the WWDG reset occurs.If the EXTI line9 event don抰 occurs the WWDG counter is indefinitely refreshed inthe WWDG ISR which prevent from WWDG reset. If the WWDG reset is generated, after resuming from reset a led connected to PC.06is turned on. In this example the system is clocked by the HSE(8MHz).
上傳時間： 2013-11-11
上傳用戶：gundamwzc
pcie基本概念及其工作原理介紹：PCI Express®（或稱PCIe®），是一項高性能、高帶寬，此標準由互連外圍設備專業組（PCI-SIG）制 訂，用于替代PCI、PCI Extended (PCI-X)等基于總線的通訊體系架構以及圖形加速端口（AGP）。 轉向PCIe主要是為了實現顯著增強系統吞吐量、擴容性和靈活性的目標，同時還要降低制造成本，而這 些都是基于總線的傳統互連標準所達不到的。PCI Express標準在設計時著眼于未來，并且能夠繼續演 進，從而為系統提供更大的吞吐量。第一代PCIe規定的吞吐量是每秒2.5千兆比特（Gbps），第二代規 定的吞吐量是5.0 Gbps，而最近公布PCIe 3.0標準已經支持8.0 Gbps的吞吐量。在PCIe標準繼續充分利 用最新技術來提供不斷加大的吞吐量的同時，采用分層協議也便于PCI向PCIe的演進，并保持了與現有 PCI應用的驅動程序軟件兼容性。 雖然最初的目標是計算機擴展卡以及圖形卡，但PCIe目前也廣泛適用于涵蓋更廣的應用門類，包括網絡 組建、通信、存儲、工業電子設備和消費類電子產品。 本白皮書的目的在于幫助讀者進一步了解PCI Express以及成功PCIe成功應用。 PCI Express基本工作原理 拓撲結構 本節介紹了PCIe協議的基本工作原理以及當今系統中實現和支持PCIe協議所需要的各個組成部分。本節 的目標在于提供PCIe的相關工作知識，并未涉及到PCIe協議的具體復雜性。 PCIe的優勢就在于降低了復雜度所帶來的成本。PCIe屬于一種基于數據包的串行連接協議，它的復雜度 估計在PCI并行總線的10倍以上。之所以有這樣的復雜度，部分是由于對以千兆級的速度進行并行至串 行的數據轉換的需要，部分是由于向基于數據包實現方案的轉移。 PCIe保留了PCI的基本載入-存儲體系架構，包括支持以前由PCI-X標準加入的分割事務處理特性。此 外，PCIe引入了一系列低階消息傳遞基元來管理鏈路（例如鏈路級流量控制），以仿真傳統并行總線的 邊帶信號，并用于提供更高水平的健壯性和功能性。此規格定義了許多既支持當今需要又支持未來擴展 的特性，同時還保持了與PCI軟件驅動程序的兼容性。PCI Express的先進特性包括：自主功率管理； 先進錯誤報告；通過端對端循環冗余校驗（ECRC）實現的端對端可靠性，支持熱插拔；以及服務質量（QoS）流量分級。
上傳時間： 2013-11-29
上傳用戶：zw380105939
RemoteWAP is a Remote Administration Tool for any Operating System that can support the Java Virtual Machine. It has been designed for anyone who wishes to have complete control of there OS anywhere by using a WAP enabled Mobile Phone. RemoteWAP is developed using Java and WML for the client mobile phone front-end pages. RemoteWAP has a Java Swing-GUI to allow for easy control. Future releases will have a Command Line Interface for quick use
標簽： Administration RemoteWAP Operating Virtual
上傳時間： 2015-02-01
上傳用戶：exxxds
太原理工大學碩 士 學 位 論 文 摘 要 隨著網絡和多媒體技術的不斷發展，當前可以提供實時數 據特別是多媒體數據傳輸服務的分布式多媒體網絡已經成為網 絡發展的一個重要方向。為了實現這一目標，如何在現有的 Internet 中引入服務質量（QoS）就成為網絡服務中的一個重要 課題。
上傳時間： 2014-01-19
上傳用戶：zhengjian
RG-S3550 是一款全線速安全智能多層交換機，該交換機硬件支持多層交換，提供二到七層的智能的流分類和和完善的服務質量（QoS）以及組播管理特性，支持完善的路由協議，
上傳時間： 2015-05-06
上傳用戶：924484786
opnet process 無線系統仿真，有關802.16 qos的部分模塊仿真代碼
上傳時間： 2013-12-24
上傳用戶：ardager
This project attempts to implement a Database using B+Tree. The project has developed a DATABASE SYSTEM with lesser memory consumption. Its API includes simple SQL Statements and the output is displayed on the screen. Certain applications for which several features of existing databases like concurrency control, transaction management, security features are not enabled. B+Trees can be used as an index for factor access to the data. Help facility is provided to know the syntax of SQL Statements.
標簽： project implement developed Database
上傳時間： 2013-12-25
上傳用戶：semi1981
LemonSMS is a component developed in Java that provides a turnkey solution for application developers to incorporate into their Java applications the functionality of sending and processing of incoming SMS messages. LemonSMS acts as a middleware between a Java application and a GSM Modem or Data enabled phone. Because LemonSMS only provides an interface to the added SMS functionality, your application still handles access to data and business logic tier. With the easy-to-use LemonSMS API, developers can easily utilize SMS functionalities provided by LemonSMS.
標簽： application component developed developer
上傳時間： 2013-12-29
上傳用戶：大融融rr
各種視頻壓縮格式的網絡傳輸的模擬信道分析，QOs保證
上傳時間： 2015-10-23
上傳用戶：bruce
Beginning with an overview of SQL Server 2000, this book discusses online transaction processing (OLTP) and online analytical processing (OLAP), features a tour of different SQL Server releases, and offers a guide to installation. The author describes and demonstrates the changes since SQL Server 7.0, thoroughly exploring SQL Server 2000 s capacity as a Web-enabled database server. Readers are then immersed in advanced database administration topics such as performance optimization and debugging techniques.
標簽： transaction processing Beginning discusses
上傳時間： 2013-11-28
上傳用戶：eclipse
