spi multiplexer

://s3.51cto.com/wyfs02/M02/6C/1B/wKioL1VATsnh6_eoAADNjI_b_b8004.jpg "style=" width : 600px;height:420px; "title=" w0200810182005412015194.jpg "width=" "height=" 420 "border=" 0 "hspace=" 0 "vspace=" 0 " alt= "Wkiol1vatsnh6_eoaadnji_b_b8004.jpg"/>Wavelength Division Multiplexing (WDM) and Multiplexer (also known as wave/splitter) are applied to both ends of optical fiber, respectively, to realize the coupling and separation of different light waves. Th

module of the switch pin;5. Then pull the high Y6, delay 10 seconds, this is to ensure that the communication module normal boot;6. After we send the at+cmgf=1\r\n, set the module for the SMS send mode;7. If the module returns the correct prompt content, we send at+cscs= "GB2312" \ r \ n, set the format of the text;8. After the module returns the correct prompt content, sends the at+cnmi=2,1\r\n, sets the new short interest mode;9. After setting, send At+cmgs= "' +number+ '" \ r \ n, send the m

= ~cstopb;//1 Stop bitEliminate all special software and hardware flow controlOptions.c_lflag = ~ (Icanon | ECHO | Echoe | Isig | Crtscts);Options.c_oflag = ~ (opost);Setting the time-out rangeOptions.c_cc[vtime] = 150;Options.c_cc[vmin] = 0;Write configurationTcsetattr (Serial, Tcsanow, options);Tcflush (serial, Tcioflush);return serial;}Read and write directly using read and write================================ I²c ================================Off the net ... Ready to be perfected========

A device driver is used as a translation between hardware and the application that uses hardware (user code) or the kernel, which hides the details of the hardware's work behind the scenes, thereby simplifying programming. Programmers can use a set of standardized invocation methods (system calls) to write advanced application code without having to care about the specific hardware it will control or the processor on which it is running. With a well-defined internal application programming inter

is the same class. Conversely, if a parent does not delegate the model and is loaded by the various ClassLoader, if the user writes a class called ' Java.lang.Object, and puts it in the program's classpath, there will be a number of different object classes in the system, and the program will become chaotic. If a developer tries to write a Java class that has the same name as an existing class in the Rt.jar class library, it will find that it compiles correctly, but it can never be loaded and r

like a pipe, it's a channel. The channel is different from the flow where the channel is bidirectional and can be used for reading, writing, and simultaneous read and write operations.The underlying operating system's channels are generally full-duplex, so Full-duplex channel can better map the underlying operating system APIs than streaming.Channel mainly divided into two major categories: Selectablechannel: User Network Read-write FileChannel: for file operations The Serversocketchannel and s

host 1.1.1.1 and 1.1.1.2 20:13:32. 485925 IP 1.1.1.2> 1.1.1.1: ESP (spi = 0x5dd784dd, seq = 0x16b), length 100 20:13:33. 484953 IP 1.1.1.1> 1.1.1.2: ESP (spi = 0x6b26c2e7, seq = 0x16c), length 100 20:13:33. 487009 IP 1.1.1.2> 1.1.1.1: ESP (spi = 0x5dd784dd, seq = 0x16c), length 100 20:13:34. 486172 IP 1.1.1.1> 1.1.1.2: ESP (

(buffer))! =-1) {baos.write (buffer,0, Bytesnumread); }returnBaos.tobytearray (); }Catch(IOException e) {E.printstacktrace (); }return NULL; }}thread Context class loaderThe Thread Context class loader (context class loader) was introduced starting with JDK 1.2. The methods in class Java.lang.Thread Getcontextclassloader () and Setcontextclassloader (ClassLoader cl) are used to get and set the context class loader for the thread. If it is not set by the Setcontextclassloader (ClassLoade

Humming Bird A20 SPI2 using compilationYao.guet 2014-07-17, please specify the source:Http://blog.csdn.net/Yao_GUETThe A20 has 4 SPI interfaces, because humming Bird A20 only leads to SPI2, so here's an example of Spi2. See how the Fex file is set.Because I get the Linux kernel is already has the Spi-sun7i drive code file. People democracy so without the code of the same shoe to download the patch package f

1. The most detailed analysis and code HTTP://ELM-CHAN.ORG/DOCS/MMC/MMC_E.HTML2 of the SD card SPI mode have been seen so far. Reprint http://blog.csdn.net/ming1006/ article/details/7281597Now our cell phone memory is micro SD card, also known as TF card, so micro SD card is more common than SD card. I once also want to write the SD card reading program, but do not want to go to buy an SD card, then think of the phone memory card is not like the SD ca

full name are loaded only once, that isloadClassMethods are not repeatedly called. Next we will discuss another kind of loaders: thread context class loaders. Thread context Class Loader Context class loader is introduced from JDK 1.2. Classjava.lang.ThreadMethod ingetContextClassLoader()AndsetContextClassLoader(ClassLoader cl)The context class loader used to obtain and set the thread. IfsetContextClassLoader(ClassLoader cl)The thread inherits the context class loader of its parent thread. The

The fm1702 chip can be operated either through the SPI serial port or through the parallel port. In our design, operations are performed through the SPI serial port. So after the hardware circuit is set up, the first thing to do is to debug the SPI interface. The control chip we use is stm32f103c8tl, which integrates the SPI