#include <visp3/io/vpParallelPort.h>

Public Member Functions
	vpParallelPort ()

virtual	~vpParallelPort ()

void	sendData (unsigned char &data)

unsigned char	getData ()

Detailed Description

Parallel port management under unix.

The code below shows how to send a data over the parallel port.

#include <visp3/io/vpParallelPort.h>
 
#ifdef ENABLE_VISP_NAMESPACE
using namespace VISP_NAMESPACE_NAME;
#endif
 
int main()
{
#ifdef VISP_HAVE_PARPORT
  vpParallelPort parport;
 
  unsigned char data = 5; // 0x00000101 = 5 in decimal
  parport.sendData(data); // D0 and D2 are set to logical level 1
#endif
}

Examples: parallelPort.cpp.

Definition at line 82 of file vpParallelPort.h.

Constructor & Destructor Documentation

◆ vpParallelPort()

vpParallelPort::vpParallelPort ( )

Constructor to access to a parallel port.

Open and initialise the parallel port by sending 0 to the data bus.

Set the default device to "/dev/parport0".

Exceptions

vpParallelPortException::opening If the device used to access to the parallel port can't be opened. A possible reason is that you don't have write access.

Definition at line 69 of file vpParallelPort.cpp.

References sendData().

◆ ~vpParallelPort()

vpParallelPort::~vpParallelPort ( )

virtual

Destructor to close the parallel port.

Exceptions

vpParallelPortException::closing If the device used to access to the parallel port can't be closed.

Definition at line 85 of file vpParallelPort.cpp.

Member Function Documentation

◆ getData()

unsigned char vpParallelPort::getData ( )

Get the last data sent to the parallel port.

Definition at line 142 of file vpParallelPort.cpp.

◆ sendData()

void vpParallelPort::sendData ( unsigned char & data )

Send a data to the parallel port.

Parameters

data	: Value [D7, D6, ... D0] to send to the data bus.

The code bellow shows how to set D0 and D2 to logical level 1:

vpParallelPort parport;
 
unsigned char data = 5; // 0x00000101 = 5 in decimal
parport.sendData(data); // D0 and D2 are set to logical level 1

Examples: parallelPort.cpp.

Definition at line 129 of file vpParallelPort.cpp.

Referenced by vpParallelPort().