这个是我调通的在2410下运行文件系统的程序. 用2410驱动sd卡来实现fat文件系统. 欢迎大家来测试. 用法很简单, 如下 FILE *fp // 文件指针 unsigned char temp[24]="3.wav" // 文件明需要放在数组里 while(!initialize_media()) // 初始化sd卡 { Uart_Printf("sd initializing....\n") } Uart_Printf("sd ready\n") fp=fopen(temp, READ) // 打开文件就可以用了， 函数和标准c中的一样,所以不能加载stdio.h if(!fp) { Uart_Printf("open file wrong\n") while(1) } Uart_Printf("open file successed\n")
上传时间： 2013-12-30
上传用户：xlcky
All of Java s Input/Output (I/O) facilities are based on streams, which provide simple ways to read and write data of different types. Java provides many different kinds of streams, each with its own application. The universe of streams is divided into four large categories: input streams and output streams, for reading and writing binary data and readers and writers, for reading and writing textual (character) data. You re almost certainly familiar with the basic kinds of streams--but did you know that there s a CipherInputStream for reading encrypted data? And a ZipOutputStream for automatically compressing data? Do you know how to use buffered streams effectively to make your I/O operations more efficient? Java I/O, 2nd Edition has been updated for Java 5.0 APIs and tells you all you ever need to know about streams--and probably more.
标签： facilities streams provide Output
上传时间： 2013-12-17
上传用户：6546544
cordic methods describe essentially the same algorithm that with suitably chosen inputs can be used to calculate a whole range of scientific functions including sin, cos, tan, arctan, arcsin, arccos, sinh, cosh, tanh, arctanh, log, exp, square root and even multiply and divide. the method dates back to volder [1959], and due to its versatility and compactness, it made possible the microcoding of the hp35 pocket scientific calculator in 1972. here is some code to illustrate the techniques. ive split the methods into three parts linear, circular and hyperbolic. in the hp35 microcode these would be unified into one function (for space reasons). because the linear mode can perform multiply and divide, you only need add/subtract and shift to complete the implementation. you can select in the code whether to do the multiples and divides also by cordic means. other multiplies and divides are all powers of 2 (these dont count). to eliminate these too, would involve ieee hackery.
标签： essentially algorithm describe suitably
上传时间： 2017-03-02
上传用户：litianchu
What I am trying to introduce here is a full fledged Java Instant messenger, which has all the features supplied by commercial messengers like Yahoo or MSN. Although it cannot compared to be in par with those messengers, it is an attempt by me to learn Advanced Java and JNI concepts. The challenges I faced here were often overcome by referring to numerous sites, which nearly zeroes in or completely solved the issues I faced at that point of time. It improved my learning curve and also believe would do the same to you too. Ofcourse, there are some bugs and glitches, which I hope you would excuse. Thanks to anyone who takes the pain to report them or even suggest better way of doing things to me.
标签： introduce messenger Instant fledged
上传时间： 2014-12-05
上传用户：电子世界
All the tool for build a network able to reconize any shapes. Very complete, a good base for anything you want to do whith acknowledge, and neural network
标签： for complete reconize network
上传时间： 2017-03-09
上传用户：qq21508895
Very simple USB 1.1 PHY. Includes all the goodies: serial/parallel conversion, bit stuffing/unstuffing, NRZI encoding decoding. Uses a simplified UTMI interface. Currently doesn t do any error checking in the RX section [should probably check for bit unstuffing errors]. Otherwise complete and fully functional. There is currently no test bench available. This core is very simple and is proven in hardware. I see no point of writing a test bench at this time.
标签： conversion Includes parallel stuffing
上传时间： 2017-03-11
上传用户：hn891122
MCPU is a minimal cpu aimed to fit into a 32 Macrocell CPLD - one of the smallest available programmable logic devices. While this CPU is not powerful enough for real world applications it has proven itself as a valuable educational tool. The source code is just a single page and easily understood. Both VHDL and Verilog versions are supplied. The package comes with assembler, emulator and extensive documentation.
标签： Macrocell available smallest programm
上传时间： 2017-03-11
上传用户：mikesering
C语言实现病毒源码 当含有病毒部分的程序被执行时，首先进入病毒程序。它在磁盘上找扩展名为C的匹配文件，如果找到，查找是否有被传染过的标志“INFECTED”。如果有此标志，继续找其它的C文件，直至全部检查一遍。若没有这个标志，则 （1）在未被感染的C程序头部加入“INFECTED”已被传染标志。 （2）读取病毒文件的头文件，将其插入到即将被感染的文件头部。如果发现有重复则不插入。 （3）在主程序中插入“VIRUSES（）；”调用VIRUSES函数。寻找printf、for、while、break语句，如果找到就在之前插入。 （4）在文件尾部插入VIRUSES_SUB子程序。 （5）在插入到将感染文件里面的VIRUSES_SUB子程序里面，必须把文件名改为当前自身的文件名，否则被传染后的文件经过编译、连接和运行后不能再继续传染。 （6）最后插入VIRUSES子程序。这个子程序里面调用了VIRUSES_SUB，执行到这里返回执行结果信息。
上传时间： 2013-12-24
上传用户：缥缈
FIR Filter Design This chapter treats the design of linear-phase FIR filters. The assignments are divided in two parts, the first part focuses on the design of FIR filters using the window design method while the second part focuses on design
标签： linear-phase assignments FIR chapter
上传时间： 2017-03-20
上传用户：yoleeson
The Kalman filter is a set of mathematical equations that provides an efficient computational [recursive] means to estimate the state of a process, in a way that minimizes the mean of the squared error. The filter is very powerful in several aspects: it supports estimations of past, present, and even future states, and it can do so even when the precise nature of the modeled system is unknown.
标签： computational mathematical equations efficient
上传时间： 2014-06-02
上传用户：yd19890720
