linux serial port programming c example
Serial port programming for Windows and Linux
Ngày tải lên :
05/11/2013, 20:15
... 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 receiver
options .c_ cflag |= (CLOCAL | CREAD);
//apply ... each operating system. The actual application can
then 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 call
to the close() system function, as the following code
demonstrates.
//close the serial port
if(close(fd)...
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Tài liệu Linux IO Port Programming pptx
Ngày tải lên :
22/12/2013, 10:15
... 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 cycles
xchg ... x86 architecture.
rdtsc for Pentiums
For 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, the
rdtsc 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
Ngày tải lên :
21/01/2014, 07:20
...
kill command.
SIGCHLD Linux sends a process this signal when a child process exits. See
Section 3.4.4,“Cleaning Up Children Asynchronously,” in
Chapter 3,“Processes.”
SIGXCPU Linux sends a process ... pointer” can cause a
SIGSEGV.
SIGPIPE The program has attempted to access a broken data stream, such
as a socket connection that has been closed by the other party.
SIGALRM The alarm system call schedules ... illegal
instruction.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
Ngày tải lên :
19/03/2014, 14:10
... giving
programmers 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 ... named
second, which will contain the second line of the output, and then the program constructs first
as a variable that contains as many * characters as the number of characters in second.
Finally, ... discarding whitespace
characters (space, tab, backspace, or the end of the line) from the input, then reads
characters into name until it encounters another whitespace character or end-of-file.
Therefore,...
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linux socket programming by example
Ngày tải lên :
28/04/2014, 16:53
...
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
Ngày tải lên :
16/08/2012, 08:46
... 183
Generics in Configurations 185
Generic Value Specification in Architecture 188
Generic Specifications in Configurations 190
Board-Socket-Chip Analogy 195
Block Configurations 199
Architecture Configurations ...
mux
device. There is an inverter component, an
andgate
component and an
orgate
component. Each of these components is declared
in the architecture declaration section, which is between the architecture
statement ... std_logic);
END test;
ARCHITECTURE test_arch OF test IS
COMPONENT and2
GENERIC(rise, fall : TIME := 10 NS;
GENERIC(load : INTEGER := 0);
PORT ( a, b : IN std_logic;
PORT ( c : OUT std_logic);
END COMPONENT;
BEGIN
U1:...
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Foreword và Predace của VHDL Programming by Example 4th Edition_01
Ngày tải lên :
29/09/2013, 19:20
... description capability of
VHDL. Chapter 1 discusses how VHDL design relates to schematic based
design, and introduces the basic terms of the language. Chapter 2 describes
some of the basic concepts ... advanced VHDL
features to the reader. Chapter 7 discusses how VHDL configurations
can be used to construct and manage complex VHDL designs. Each of
the 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 introduces
the...
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O''''Reilly - Programming C#
Ngày tải lên :
04/11/2013, 13:15
... 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
Ngày tải lên :
06/11/2013, 08:15
... Framework class library can use the SerialPort class to
access COM ports. Some USB devices function as virtual COM ports, which
applications 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 free
PC-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
Ngày tải lên :
10/12/2013, 14:16
... 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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