serial port programming using c linux
Serial port programming for Windows and Linux
... the serial port requires threesteps.1. Create a DCB object and initialize it using thefunction BuildCommDCB().2. Set the serial port settings using the initializedDCB object using the function ... 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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Questions to .NET and Programming in C#
... static constructor for a class is called automatically when the object is accessed. c) A static constructor can have public as a accessibility modifiers 74. class A { public static ... Static constructors can be called explicitly or implicitly. b) Static constructors can have accessibility modifiers. e) Static constructors are called when the class is loaded. c) ... “Object” that is used to create an object? a) void object(){} c) Object Object(){} b) object(){} d) Object(){} 70. Which of the following methods can act as a constructor for the class...
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Questions to .NET and Programming in C#
... implementing an abstract class. [1.0] a) public abstract void class ClassA c) abstract public ClassA b) public abstract class ClassA 105. Which of the following methods can be called as an “operation”? ... class can be invoked. 193. using System.Reflection; using System; class Reflect { public int i=20; public char ch='a'; public float f1=10; public void GetFloat(){ Console.WriteLine(f1); ... Space1.MyClass() c) Space1.Space2.MyClass() b) Space2.MyClass() d) Space2.Space1.MyClass() 141. namespace College.Library{ namespace Shelf{ class Book{ } } } The fully qualified name of class...
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Socket programming in C
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socket programming in c.
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Question Bank Introduction to .NET and Programming in C#
... the object is accessed. c) A static constructor can have public as a accessibility modifiers74. class A{public static int X = B.Y + 1;}class B{public static int Y = A.X + 1;static void ... initialize a class.d) A static constructor cannot have accessibility modifiers.b) Static constructors may or may not take parameters.e) A static constructor for a class is called automatically ... Static constructors ?[2.0]a) A constructor-declaration may include a set of attributes.d) A class has no other constructors than those that are actually declared in the classb) A constructor-declaration...
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6.087: Practical Programming in C
... space characters. 5 main .c: dict .c: dict.h: #include <stdio.h> #include "dict.h" /* data structure #include <stdlib.h> for the dictionary */ #include "dict.h" ... other source file and still be able to access or modify the dictionary directly. In order to prevent direct access, the dictionary should be declared with the static keyword in dict .c. (c) Congratulations! ... to compile your code. Write the command line that you should use to compile this code (using gcc). Let’s call the desired output program dictionary.o. Answer: gcc -g -O0 -Wall main .c dict.c...
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DSP applications using C and the TMS320C6X DSK (P3)
... 3.5 cover the essential background for thisproject.Support files for this project include factclasm .c, factclasmfunc.sa,vectors, rts6701.lib, and C6 xdsk.cmd. Build and run this project as fact-clasm. ... find the factorial of a number (factorial .c) .;Factfunc.asm Assembly function called from C to find factorial.def _factfunc ;asm function called from C _factfunc: MV A4,A1 ;setup loop count in ... 1.3.Example 3.6: Factorial Using C Calling a Linear Assembly Function(factclasm)Figure 3.18 shows a listing of the C program factclasm .c, which calls the linearASM function factclasmfunc.sa (Figure...
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DSP applications using C and the TMS320C6X DSK (P4)
... with C Program Calling ASM Function Using Circular Buffer (FIRcirc)The C program FIRcirc .c (Figure 4.33) calls the ASM function FIRcirc-func.asm (Figure 4.34), which implements an FIR filter using ... Nyquist frequency and(4.41)Since the impulse response coefficients hi= C Q-i, C n= C -n, and Q = 5, the impulseresponse coefficients are(4.42)These coefficients can be calculated with a ... Response Filters;FIRCASMfuncfast.asm C- called faster function to implement FIR.def _fircasmfunc_fircasmfunc: ;ASM function called from C MV A6,A1 ;setup loop countMPY A6,2,A6 ;since dly buffer data...
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Database Programming with C#
... the modification has occurred. However, this doesn’t mean that a changecan’t be rolled back, because the trigger has direct access to the modified row andas such can roll back any modification. ... the connection23 cnnUserMan = new SqlConnection(STR_CONNECTION_STRING);24 cnnUserMan.Open();2526 // Instantiate and initialize command27 cmmUser = new SqlCommand(“SELECT * FROM viwUser”, cnnUserMan);28 ... constraint in some situations, because a trigger can access columnsin other tables, unlike a constraint, which can only access columns in the currenttable or row. If your code is to handle your business...
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DSP applications using C and the TMS320C6X DSK (P5)
... Applications Using C and the TMS32 0C6 x DSK. Rulph ChassaingCopyright â 2002 John Wiley & Sons, Inc.ISBNs: 0-471-20754-3 (Hardback); 0-471-22112-0 (Electronic) Programming Examples Using C Code175//two_tones .c ... ()=-=-ÂÂ0111HzazbziiiNjjjM()=-=--=-ÂÂ0111 Programming Examples Using C Code179 H2(z), can be either first- or second-order functions. As with the cascade struc-ture, the parallel form can be efficiently represented in terms of second-order ... or second-order transfer functions. The cascade (or series) struc-ture is shown in Figure 5.4. An overall transfer function can be represented withcascaded transfer functions. For each section,...
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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. ... is typi- Chapter 220Software uses the code point to obtain the encoded character, which representsa character using a specific coding method. The code point and encoded char-acter can have ... 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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