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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
標簽： development acquisition introduced article
上傳時間： 2015-12-07
上傳用戶：lijianyu172
IPCAM Design document based on TI DaVinci
標簽： document DaVinci Design IPCAM
上傳時間： 2013-12-26
上傳用戶：songrui
IEEE 754 Floating point
上傳時間： 2015-12-11
上傳用戶：gtf1207
[推薦]彭光紅先生的《小容量單片機系統(tǒng)的C語言程序結構》Point RTOS monolithic integrated circuit real-time operating system Point RTOS monolithic integrated circuit real-time operating system
標簽： monolithic integrated real-time operating
上傳時間： 2013-12-18
上傳用戶：rocketrevenge
Point RTOS 主要是一個針對小系統(tǒng)開發(fā)而設計的實時操作系統(tǒng)。 目前，Point RTOS 僅提供對51系列及其擴展系統(tǒng)單片機的支持， 針對51內核函數不能重入以及51單片機的內存空間管理方式等因素， RTOS放棄了搶先式內核的調度，而使用了時間片的調度方式，除非任務主動放棄， 否則任務將獨占CPU一直運行，因而任務中必須完成對本次操作的時間片設置，即等時間的設置。
標簽： Point RTOS 小系統(tǒng) 實時操作系統(tǒng)
上傳時間： 2014-12-05
上傳用戶：athjac
This is the tlc0834 driver, welcome everybody criticism to point out mistakes This is the tlc0834 driver, welcome everybody criticism to point out mistakes
標簽： This 0834 criticism everybody
上傳時間： 2015-12-14
上傳用戶：caixiaoxu26
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.
標簽： priority preemptive inversion problem
上傳時間： 2015-12-14
上傳用戶：氣溫達上千萬的
基于DDS的信號發(fā)生器的設計與開發(fā) The Design and Development of Function Generator Based on DDS
標簽： Development DDS Generator Function
上傳時間： 2014-01-03
上傳用戶：stewart·
一般使用PC Based Controller 都是當作現場設備的一種，也就是要接受 主系統(tǒng)的命令，做一些操作控制。以Modbus 來看屬于Slave 的角色，隨 時等待接收Modbus Master 的Query Message，然后依據內容做控制，最后 將控制結果以Response Message 回傳。本章將以ICP 7524 及ICP 7188E5 等 兩種設備分別設計Modbus RTU、ASCII 及Modbus/TCP 的Slave 應用程序， 讀者可以將此兩種程序的架構再延伸設計至各種實際應用程序。
標簽： Controller Based 現場設備
上傳時間： 2015-12-16
上傳用戶：nanxia
A Comparison of Load-based and Queue-based Active Queue Management Algorithms
標簽： Queue-based Comparison Algorithms Load-based
上傳時間： 2015-12-16
上傳用戶：ruixue198909
