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Diffstat (limited to 'src/common/port/parallel.cpp')
| -rw-r--r-- | src/common/port/parallel.cpp | 247 |
1 files changed, 247 insertions, 0 deletions
diff --git a/src/common/port/parallel.cpp b/src/common/port/parallel.cpp new file mode 100644 index 0000000..22b6a4c --- /dev/null +++ b/src/common/port/parallel.cpp @@ -0,0 +1,247 @@ +/*************************************************************************** + * Copyright (C) 2005-2007 Nicolas Hadacek <hadacek@kde.org> * + * Copyright (C) 2003-2004 Alain Gibaud <alain.gibaud@free.fr> * + * Copyright (C) 2002-2003 Stephen Landamore <stephen@landamore.com> * + * * + * This program is free software; you can redistribute it and/or modify * + * it under the terms of the GNU General Public License as published by * + * the Free Software Foundation; either version 2 of the License, or * + * (at your option) any later version. * + ***************************************************************************/ +#include "parallel.h" + +#include "common/global/global.h" +#if defined(HAVE_PPDEV) +# include <linux/ppdev.h> +# include <linux/parport.h> +# include <fcntl.h> +# include <sys/ioctl.h> +# include <unistd.h> // needed on some system +# include <errno.h> +#elif defined(HAVE_PPBUS) +# include <sys/param.h> +# include <machine/cpufunc.h> +# include <dev/ppbus/ppi.h> +# include <dev/ppbus/ppbconf.h> +# include <fcntl.h> +# include <unistd.h> +# include <errno.h> +#endif +#include "common/common/misc.h" + +//----------------------------------------------------------------------------- +QStringList *Port::Parallel::_list = 0; + +Port::IODirs Port::Parallel::probe(const QString &device) +{ +#if defined(HAVE_PPDEV) + int fd = ::open(device.latin1(), O_RDWR); + if ( fd<0) return NoIO; + if ( ioctl(fd, PPCLAIM)<0 ) { + ::close(fd) ; + return In; + } + ioctl(fd, PPRELEASE); + ::close(fd); + return (In | Out); +#elif defined(HAVE_PPBUS) + int fd = ::open(device.latin1(), O_RDWR); + if ( fd<0 ) return NoIO; + ::close(fd); + return In | Out; // #### can we detect read-only ? +#else + return NoIO; +#endif +} + +QStringList Port::Parallel::deviceList() +{ + QStringList list; +#if defined(HAVE_PPDEV) + // standard parport in user space + for(int i = 0; i<8; ++i) list.append(QString("/dev/parport%1").arg(i)); + // new devfs parport flavour + for(int i = 0; i<8; ++i) list.append(QString("/dev/parports/%1").arg(i)); +#elif defined(HAVE_PPBUS) + // FreeBSD + for(int i = 0; i<8; ++i) list.append(QString("/dev/ppi%1").arg(i)); +#endif + return list; +} + +const QStringList &Port::Parallel::probedDeviceList() +{ + if ( _list==0 ) { + QStringList all = deviceList(); + _list = new QStringList; + for (uint i=0; i<uint(all.count()); i++) + if( probe(all[i]) & (In | Out) ) _list->append(all[i]); + } + return *_list; +} + +bool Port::Parallel::isAvailable() +{ +#if defined(HAVE_PPDEV) || defined(HAVE_PPBUS) + return true; +#else + return false; +#endif +} + +//----------------------------------------------------------------------------- +const Port::Parallel::PPinData Port::Parallel::PIN_DATA[Nb_Pins] = { + { Control, 0x01, Out, "/DS" }, // !strobe + { Data, 0x01, Out, "D0" }, // data 0 + { Data, 0x02, Out, "D1" }, // data 1 + { Data, 0x04, Out, "D2" }, // data 2 + { Data, 0x08, Out, "D3" }, // data 3 + { Data, 0x10, Out, "D4" }, // data 4 + { Data, 0x20, Out, "D5" }, // data 5 + { Data, 0x40, Out, "D6" }, // data 6 + { Data, 0x80, Out, "D7" }, // data 7 + { Status, 0x40, In, "/ACK" }, // !ack + { Status, 0x80, In, "BUSY" }, // busy + { Status, 0x20, In, "PAPER" }, // pout + { Status, 0x10, In, "SELin" }, // select + { Control, 0x02, Out, "LF" }, // !feed + { Status, 0x08, In, "/ERROR" }, // !error + { Control, 0x04, Out, "PRIME" }, // !init + { Control, 0x08, Out, "SELout" }, // !si + { Nb_RequestTypes, 0x00, NoIO, "GND" }, // GND + { Nb_RequestTypes, 0x00, NoIO, "GND" }, // GND + { Nb_RequestTypes, 0x00, NoIO, "GND" }, // GND + { Nb_RequestTypes, 0x00, NoIO, "GND" }, // GND + { Nb_RequestTypes, 0x00, NoIO, "GND" }, // GND + { Nb_RequestTypes, 0x00, NoIO, "GND" }, // GND + { Nb_RequestTypes, 0x00, NoIO, "GND" }, // GND + { Nb_RequestTypes, 0x00, NoIO, "GND" } // GND +}; + +QValueVector<Port::PinData> Port::Parallel::pinData(IODir dir) const +{ + QValueVector<PinData> v; + for (uint i=0; i<Nb_Pins; i++) { + if ( PIN_DATA[i].dir!=dir ) continue; + PinData pd = { i, PIN_DATA[i].label }; + v.append(pd); + } + return v; +} + +bool Port::Parallel::isGroundPin(uint pin) const +{ + return ( PIN_DATA[pin].label==QString("GND") ); +} + +Port::IODir Port::Parallel::ioDir(uint pin) const +{ + return PIN_DATA[pin].dir; +} + +const Port::Parallel::RequestData Port::Parallel::REQUEST_DATA[Nb_RequestTypes] = { +#if defined(HAVE_PPDEV) + { PPRCONTROL, PPWCONTROL }, + { PPRSTATUS, 0 }, + { PPRDATA, PPWDATA } +#elif defined(HAVE_PPBUS) + { PPIGCTRL, PPISCTRL }, + { PPIGSTATUS, 0 }, + { PPIGDATA, PPISDATA } +#else + { 0, 0 }, + { 0, 0 }, + { 0, 0 } +#endif +}; + +Port::Parallel::Parallel(const QString &device, Log::Base &base) + : Base(base), _fd(-1), _device(device) +{ + for (uint i=0; i<Nb_RequestTypes; i++) _images[i] = 0; +} + +bool Port::Parallel::internalOpen() +{ +#if defined(HAVE_PPDEV) + _fd = ::open(_device.latin1(), O_RDWR); + if ( _fd<0 ) { + setSystemError(i18n("Could not open device \"%1\"").arg(_device)); + return false; + } + if ( ioctl(_fd, PPCLAIM)<0 ) { + setSystemError(i18n("Could not claim device \"%1\": check it is read/write enabled").arg(_device)); + return false; + } +#elif defined(HAVE_PPBUS) + _fd = ::open(_device.latin1(), O_RDWR); + if ( _fd<0 ) { + setSystemError(i18n("Could not open device \"%1\"").arg(_device)); + return false; + } +#endif + return true; +} + +void Port::Parallel::internalClose() +{ + if ( _fd<0 ) return; +#if defined(HAVE_PPDEV) + ioctl(_fd, PPRELEASE); + ::close(_fd); +#elif defined(HAVE_PPBUS) + ::close(_fd); +#endif + _fd = -1; +} + +bool Port::Parallel::setPinOn(uint pin, bool on, LogicType type) +{ + if ( _fd<0 ) return false; +#if defined(HAVE_PPDEV) || defined(HAVE_PPBUS) + Q_ASSERT( pin<Nb_Pins ); + Q_ASSERT( PIN_DATA[pin].dir==Out ); + RequestType rtype = PIN_DATA[pin].rType; + Q_ASSERT( rtype!=Nb_RequestTypes ); + uchar mask = PIN_DATA[pin].mask; + uchar c = (XOR(type==NegativeLogic, on) ? _images[rtype] | mask : _images[rtype] & ~mask); + int request = REQUEST_DATA[rtype].write; + Q_ASSERT( request!=0 ); + if ( ioctl(_fd, request, &c)<0 ) { + setSystemError(i18n("Error setting pin %1 to %2").arg(PIN_DATA[pin].label).arg(on)); + return false; + } + _images[rtype] = c; +#endif + return true; +} + +bool Port::Parallel::readPin(uint pin, LogicType type, bool &value) +{ + if ( _fd<0 ) return false; +#if defined(HAVE_PPDEV) || defined(HAVE_PPBUS) + Q_ASSERT( pin<Nb_Pins ); + Q_ASSERT( PIN_DATA[pin].dir==In ); + RequestType rtype = PIN_DATA[pin].rType; + Q_ASSERT( rtype!=Nb_RequestTypes ); + int request = REQUEST_DATA[rtype].read; + Q_ASSERT( request!=0 ); + uchar c = 0; + if ( ioctl(_fd, request, &c)<0 ) { + setSystemError(i18n("Error reading bit on pin %1").arg(PIN_DATA[pin].label)); + return false; + } + _images[rtype] = c; + value = (type==NegativeLogic ? ~c : c ) & PIN_DATA[pin].mask; +#endif + return true; +} + +void Port::Parallel::setSystemError(const QString &message) +{ +#if defined(HAVE_PPDEV) || defined(HAVE_PPBUS) + log(Log::LineType::Error, message + QString(" (errno=%1).").arg(strerror(errno))); +#else + Q_UNUSED(message); +#endif +} |