linux serial port programming c example
Serial port programming for Windows and Linux
... tenths//of a second.optiont .c_ cc[VTIME] = 1;//CLOCAL means don’t allow//control of the port to be changed//CREAD says to enable the receiveroptions .c_ cflag |= (CLOCAL | CREAD);//apply ... each operating system. The actual application canthen use the common header file as its interface to the serial port. This creates a cross-platform serial inter-face allowing the creation of code ... {//error code goes here}3.4.2 Linux Closing the serial port on Linux involves a single callto the close() system function, as the following codedemonstrates.//close the serial port if(close(fd)...
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Tài liệu Linux IO Port Programming pptx
... of clock cycles taken; e.g., for a 50 MHz processor (e.g.486DX−50 or 486DX2−50), one clock cycle takes 1/50000000 seconds (=200 nanoseconds).Instruction i386 clock cycles i486 clock cyclesxchg ... x86 architecture.rdtsc for PentiumsFor Pentiums, you can get the number of clock cycles elapsed since the last reboot with the following C code(which executes the CPU instrution named RDTSC): ... For more accurate times,gettimeofday() is accurate to about a microsecond (but see above about scheduling). For Pentiums, therdtsc code fragment above is accurate to one clock cycle.If you...
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Tài liệu Advanced Linux Programming: C Table of Signals ppt
... kill command.SIGCHLD Linux sends a process this signal when a child process exits. SeeSection 3.4.4,“Cleaning Up Children Asynchronously,” inChapter 3,“Processes.”SIGXCPU Linux sends a process ... pointer” can cause a SIGSEGV.SIGPIPE The program has attempted to access a broken data stream, suchas a socket connection that has been closed by the other party.SIGALRM The alarm system call schedules ... illegalinstruction.This could indicate that the program’s stack is corrupted.SIGABRT The abort function causes the process to receive this signal.SIGFPE The process has executed an invalid floating-point...
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Koenig, moo accelerated c++ practical programming by example
... givingprogrammers concise, focused guides to specific topics.Each book in this series presents a single topic, at a technical level appropriate to that topic.The Series' practical approach is designed ... namedsecond, which will contain the second line of the output, and then the program constructs firstas a variable that contains as many * characters as the number of characters in second. Finally, ... discarding whitespacecharacters (space, tab, backspace, or the end of the line) from the input, then readscharacters into name until it encounters another whitespace character or end-of-file.Therefore,...
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linux socket programming by example
... Each chapter builds upon the previous, until all of the basic concepts are mastered in Part 1, “Basic Socket Concepts.” Part 2, “Advanced Socket Programming, ” contains some more advanced topics ... macros equivalent to the PF_ prefixed macros.Forming Socket Addresses Introduction About the Author Part 1—Basic Socket Concepts Chapter 1—Introducing Sockets A Brief Historical Introduction ... 7—Connection-Oriented Protocols for Clients Reviewing the Methods of Communication TCP/IP Handles Lost Packets TCP/IP Handles Duplicated Packets TCP/IP Handles Sequencing TCP/IP Handles Flow Control Understanding...
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VHDL Programming by Example 4th Edition
... 183Generics in Configurations 185Generic Value Specification in Architecture 188Generic Specifications in Configurations 190Board-Socket-Chip Analogy 195Block Configurations 199Architecture Configurations ... muxdevice. There is an inverter component, an andgatecomponent and an orgatecomponent. Each of these components is declaredin the architecture declaration section, which is between the architecturestatement ... std_logic);END test;ARCHITECTURE test_arch OF test ISCOMPONENT and2GENERIC(rise, fall : TIME := 10 NS;GENERIC(load : INTEGER := 0); PORT ( a, b : IN std_logic; PORT ( c : OUT std_logic);END COMPONENT;BEGINU1:...
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Foreword và Predace của VHDL Programming by Example 4th Edition_01
... description capability ofVHDL. Chapter 1 discusses how VHDL design relates to schematic baseddesign, and introduces the basic terms of the language. Chapter 2 describessome of the basic concepts ... advanced VHDLfeatures to the reader. Chapter 7 discusses how VHDL configurationscan be used to construct and manage complex VHDL designs. Each ofthe different configuration styles are discussed ... VHDL, including the different delay mecha-nisms available, how to use instance specific data, and defines VHDL dri-vers. Chapter 2 discusses concurrent statements while Chapter 3 introducesthe...
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O''''Reilly - Programming C#
... general concept of classes, interfaces, delegates (which support callbacks), reference types, and value types. Additionally, .NET includes a Common Language Specification (CLS), which provides ... interface, a C# class in effect promises to provide the functionality the interface specifies. C# also provides support for structs, a concept whose meaning has changed significantly from C+ +. ... possible to call components from C# applications into COM and to call components from COM into C# . Chapter 22 describes how this is done. The book concludes with an appendix of C# Keywords....
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Serial Port Complete
... Framework class library can use the SerialPort class toaccess COM ports. Some USB devices function as virtual COM ports, whichapplications can access in the same way as physical serial ports. ... system’s CPU. Any PC with a free expansion slot can add this type of port on an expansion card.ã RS-232 ports on PC Cards (also called PCMCIA cards). Any PC with a freePC-Card slot can use these.ã ... networks.On PCs, ports that applications can access as COM ports include these:ã RS-232 ports on older motherboards or on expansion cards.ã Ports that connect to a PC via a USB converter that...
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Tài liệu Programming C# pdf
... New Project window. Figure 2-1. Creating a C# console application in Visual Studio .NET Programming C# 13 use. The CLR's garbage collector checks the heap for unreferenced objects and ... const int Republican = 2; const int Libertarian = 3; const int NewLeft = 4; const int Progressive = 5; int myChoice = Libertarian; switch (myChoice) { case Democrat: Console.WriteLine("You ... interact with COM components created outside the managed environment of the .NET Framework. It is possible to call components from C# applications into COM and to call components from COM into C# ....
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