The hardware keys on the H5xxx are rotated by 270°

so rotate the key events

2 files changed, 15 insertions, 2 deletions

diff --git a/libopie/odevice.cpp b/libopie/odevice.cpp
index 35d6cb4..c5a916b 100644
--- a/libopie/odevice.cpp
+++ b/libopie/odevice.cpp
@@ -1141,393 +1141,400 @@ void iPAQ::init ( )
                 else if ( d-> m_modelstr == "H3700" )
                         d-> m_model = Model_iPAQ_H37xx;
                 else if ( d-> m_modelstr == "H3800" )
                         d-> m_model = Model_iPAQ_H38xx;
                 else if ( d-> m_modelstr == "H3900" )
                         d-> m_model = Model_iPAQ_H39xx;
                 else if ( d-> m_modelstr == "H5400" )
                         d-> m_model = Model_iPAQ_H5xxx;
                 else
                         d-> m_model = Model_Unknown;
 
                 f. close ( );
         }
 
         switch ( d-> m_model ) {
                 case Model_iPAQ_H31xx:
                 case Model_iPAQ_H38xx:
                         d-> m_rotation = Rot90;
                         break;
                 case Model_iPAQ_H36xx:
                 case Model_iPAQ_H37xx:
                 case Model_iPAQ_H39xx:
 
                 default:
                         d-> m_rotation = Rot270;
                         break;
                 case Model_iPAQ_H5xxx:
                         d-> m_rotation = Rot0;
                 }
 
         f. setName ( "/etc/familiar-version" );
         if ( f. open ( IO_ReadOnly )) {
                 d-> m_systemstr = "Familiar";
                 d-> m_system = System_Familiar;
 
                 QTextStream ts ( &f );
                 d-> m_sysverstr = ts. readLine ( ). mid ( 10 );
 
                 f. close ( );
         } else {
             f. setName ( "/etc/oz_version" );
 
                     if ( f. open ( IO_ReadOnly )) {
                     d-> m_systemstr = "OpenEmbedded/iPaq";
                 d-> m_system = System_Familiar;
 
                     QTextStream ts ( &f );
                     ts.setDevice ( &f );
                     d-> m_sysverstr = ts. readLine ( );
                     f. close ( );
         }
     }
 
 
 
 
 
         m_leds [0] = m_leds [1] = Led_Off;
 
         m_power_timer = 0;
 
 }
 
 void iPAQ::initButtons ( )
 {
         if ( d-> m_buttons )
                 return;
 
         if ( isQWS( ) )
                 QWSServer::setKeyboardFilter ( this );
 
         d-> m_buttons = new QValueList <ODeviceButton>;
 
         for ( uint i = 0; i < ( sizeof( ipaq_buttons ) / sizeof( i_button )); i++ ) {
                 i_button *ib = ipaq_buttons + i;
                 ODeviceButton b;
 
                 if (( ib-> model & d-> m_model ) == d-> m_model ) {
                         b. setKeycode ( ib-> code );
                         b. setUserText ( QObject::tr ( "Button", ib-> utext ));
                         b. setPixmap ( Resource::loadPixmap ( ib-> pix ));
                         b. setFactoryPresetPressedAction ( OQCopMessage ( makeChannel ( ib-> fpressedservice ), ib-> fpressedaction ));
                         b. setFactoryPresetHeldAction ( OQCopMessage ( makeChannel ( ib-> fheldservice ), ib-> fheldaction ));
 
                         d-> m_buttons-> append ( b );
                 }
         }
         reloadButtonMapping ( );
 
         QCopChannel *sysch = new QCopChannel ( "QPE/System", this );
         connect ( sysch, SIGNAL( received( const QCString &, const QByteArray & )), this, SLOT( systemMessage ( const QCString &, const QByteArray & )));
 }
 
 
 //#include <linux/h3600_ts.h>  // including kernel headers is evil ...
 
 typedef struct {
   unsigned char OffOnBlink;       /* 0=off 1=on 2=Blink */
   unsigned char TotalTime;        /* Units of 5 seconds */
   unsigned char OnTime;           /* units of 100m/s */
   unsigned char OffTime;          /* units of 100m/s */
 } LED_IN;
 
 typedef struct {
         unsigned char mode;
         unsigned char pwr;
         unsigned char brightness;
 } FLITE_IN;
 
 #define LED_ON    OD_IOW( 'f', 5, LED_IN )
 #define FLITE_ON  OD_IOW( 'f', 7, FLITE_IN )
 
 
 QValueList <OLed> iPAQ::ledList ( ) const
 {
         QValueList <OLed> vl;
         vl << Led_Power;
 
         if ( d-> m_model == Model_iPAQ_H38xx )
                 vl << Led_BlueTooth;
         return vl;
 }
 
 QValueList <OLedState> iPAQ::ledStateList ( OLed l ) const
 {
         QValueList <OLedState> vl;
 
         if ( l == Led_Power )
                 vl << Led_Off << Led_On << Led_BlinkSlow << Led_BlinkFast;
         else if ( l == Led_BlueTooth && d-> m_model == Model_iPAQ_H38xx )
                 vl << Led_Off; // << Led_On << ???
 
         return vl;
 }
 
 OLedState iPAQ::ledState ( OLed l ) const
 {
         switch ( l ) {
                 case Led_Power:
                         return m_leds [0];
                 case Led_BlueTooth:
                         return m_leds [1];
                 default:
                         return Led_Off;
         }
 }
 
 bool iPAQ::setLedState ( OLed l, OLedState st )
 {
         static int fd = ::open ( "/dev/touchscreen/0", O_RDWR | O_NONBLOCK );
 
         if ( l == Led_Power ) {
                 if ( fd >= 0 ) {
                         LED_IN leds;
                         ::memset ( &leds, 0, sizeof( leds ));
                         leds. TotalTime  = 0;
                         leds. OnTime     = 0;
                         leds. OffTime    = 1;
                         leds. OffOnBlink = 2;
 
                         switch ( st ) {
                                 case Led_Off      : leds. OffOnBlink = 0; break;
                                 case Led_On       : leds. OffOnBlink = 1; break;
                                 case Led_BlinkSlow: leds. OnTime = 10; leds. OffTime = 10; break;
                                 case Led_BlinkFast: leds. OnTime =  5; leds. OffTime =  5; break;
                         }
 
                         if ( ::ioctl ( fd, LED_ON, &leds ) >= 0 ) {
                                 m_leds [0] = st;
                                 return true;
                         }
                 }
         }
         return false;
 }
 
 
 bool iPAQ::filter ( int /*unicode*/, int keycode, int modifiers, bool isPress, bool autoRepeat )
 {
         int newkeycode = keycode;
 
         switch ( keycode ) {
                 // H38xx/H39xx have no "Q" key anymore - this is now the Mail key
                 case HardKey_Menu: {
                         if (( d-> m_model == Model_iPAQ_H38xx ) ||
                             ( d-> m_model == Model_iPAQ_H39xx ) ||
                             ( d-> m_model == Model_iPAQ_H5xxx)) {
                                 newkeycode = HardKey_Mail;
                         }
                         break;
                 }
 
-                // Rotate cursor keys 180°
+                // Rotate cursor keys 180° or 270°
                 case Key_Left :
                 case Key_Right:
                 case Key_Up   :
                 case Key_Down : {
+
                         if (( d-> m_model == Model_iPAQ_H31xx ) ||
                             ( d-> m_model == Model_iPAQ_H38xx )) {
                                 newkeycode = Key_Left + ( keycode - Key_Left + 2 ) % 4;
                         }
+                        // Rotate the cursor keys by 270°
+                        // keycode - Key_Left = position of the button starting from left clockwise
+                        // add the rotation to it and modolo. No we've the original offset
+                        // add the offset to the Key_Left key
+                        if ( d-> m_model == Model_iPAQ_H5xxx )
+                                newkeycode = Key_Left + ( keycode - Key_Left + 3 ) % 4;
                         break;
                 }
 
                 // map Power Button short/long press to F34/F35
                 case Key_SysReq: {
                         if ( isPress ) {
                                 if ( m_power_timer )
                                         killTimer ( m_power_timer );
                                 m_power_timer = startTimer ( 500 );
                         }
                         else if ( m_power_timer ) {
                                 killTimer ( m_power_timer );
                                 m_power_timer = 0;
                                 QWSServer::sendKeyEvent ( -1, HardKey_Suspend, 0, true, false );
                                 QWSServer::sendKeyEvent ( -1, HardKey_Suspend, 0, false, false );
                         }
                         newkeycode = Key_unknown;
                         break;
                 }
         }
 
         if ( newkeycode != keycode ) {
                 if ( newkeycode != Key_unknown )
                         QWSServer::sendKeyEvent ( -1, newkeycode, modifiers, isPress, autoRepeat );
                 return true;
         }
         else
                 return false;
 }
 
 void iPAQ::timerEvent ( QTimerEvent * )
 {
         killTimer ( m_power_timer );
         m_power_timer = 0;
         QWSServer::sendKeyEvent ( -1, HardKey_Backlight, 0, true, false );
         QWSServer::sendKeyEvent ( -1, HardKey_Backlight, 0, false, false );
 }
 
 
 void iPAQ::alarmSound ( )
 {
 #ifndef QT_NO_SOUND
         static Sound snd ( "alarm" );
         int fd;
         int vol;
         bool vol_reset = false;
 
         if (( fd = ::open ( "/dev/sound/mixer", O_RDWR )) >= 0 ) {
                 if ( ::ioctl ( fd, MIXER_READ( 0 ), &vol ) >= 0 ) {
                         Config cfg ( "qpe" );
                         cfg. setGroup ( "Volume" );
 
                         int volalarm = cfg. readNumEntry ( "AlarmPercent", 50 );
                         if ( volalarm < 0 )
                                 volalarm = 0;
                         else if ( volalarm > 100 )
                                 volalarm = 100;
                         volalarm |= ( volalarm << 8 );
 
                         if ( ::ioctl ( fd, MIXER_WRITE( 0 ), &volalarm ) >= 0 )
                                 vol_reset = true;
                 }
         }
 
         snd. play ( );
         while ( !snd. isFinished ( ))
                 qApp-> processEvents ( );
 
         if ( fd >= 0 ) {
                 if ( vol_reset )
                         ::ioctl ( fd, MIXER_WRITE( 0 ), &vol );
                 ::close ( fd );
         }
 #endif
 }
 
 
 bool iPAQ::setSoftSuspend ( bool soft )
 {
         bool res = false;
         int fd;
 
         if (( fd = ::open ( "/proc/sys/ts/suspend_button_mode", O_WRONLY )) >= 0 ) {
                 if ( ::write ( fd, soft ? "1" : "0", 1 ) == 1 )
                         res = true;
                 else
                         ::perror ( "write to /proc/sys/ts/suspend_button_mode" );
 
                 ::close ( fd );
         }
         else
                 ::perror ( "/proc/sys/ts/suspend_button_mode" );
 
         return res;
 }
 
 
 bool iPAQ::setDisplayBrightness ( int bright )
 {
         bool res = false;
         int fd;
 
         if ( bright > 255 )
                 bright = 255;
         if ( bright < 0 )
                 bright = 0;
 
         if (( fd = ::open ( "/dev/touchscreen/0", O_WRONLY )) >= 0 ) {
                 FLITE_IN bl;
                 bl. mode = 1;
                 bl. pwr = bright ? 1 : 0;
                 bl. brightness = ( bright * ( displayBrightnessResolution ( ) - 1 ) + 127 ) / 255;
                 res = ( ::ioctl ( fd, FLITE_ON, &bl ) == 0 );
                 ::close ( fd );
         }
         return res;
 }
 
 int iPAQ::displayBrightnessResolution ( ) const
 {
         switch ( model ( )) {
                 case Model_iPAQ_H31xx:
                 case Model_iPAQ_H36xx:
                 case Model_iPAQ_H37xx:
                                 return 128;  // really 256, but >128 could damage the LCD
 
                 case Model_iPAQ_H38xx:
                 case Model_iPAQ_H39xx:
                         return 64;
                 case Model_iPAQ_H5xxx:
                         return 255;
 
                 default:
                         return 2;
         }
 }
 
 
 bool iPAQ::hasLightSensor ( ) const
 {
         return true;
 }
 
 int iPAQ::readLightSensor ( )
 {
         int fd;
         int val = -1;
 
         if (( fd = ::open ( "/proc/hal/light_sensor", O_RDONLY )) >= 0 ) {
                 char buffer [8];
 
                 if ( ::read ( fd, buffer, 5 ) == 5 ) {
                         char *endptr;
 
                         buffer [4] = 0;
                         val = ::strtol ( buffer + 2, &endptr, 16 );
 
                         if ( *endptr != 0 )
                                 val = -1;
                 }
                 ::close ( fd );
         }
 
         return val;
 }
 
 int iPAQ::lightSensorResolution ( ) const
 {
         return 256;
 }
 
 /**************************************************
  *
  * Zaurus
  *
  **************************************************/
 
 // Check whether this device is the sharp zaurus..
 // FIXME This gets unnecessary complicated. We should think about splitting the Zaurus
 //       class up into individual classes. We need three classes
 //
 //       Zaurus-Collie (SA-model  w/ 320x240 lcd, for SL5500 and SL5000)
 //       Zaurus-Poodle (PXA-model w/ 320x240 lcd, for SL5600)
 //       Zaurus-Corgi  (PXA-model w/ 640x480 lcd, for C700, C750, C760, and C860)
 //
 //       Only question right now is: Do we really need to do it? Because as soon
 //       as the OpenZaurus kernel is ready, there will be a unified interface for all
 //       Zaurus models (concerning apm, backlight, buttons, etc.)
 //
 //       Comments? - mickeyl.
 
 bool Zaurus::isZaurus()
diff --git a/libopie2/opiecore/device/odevice_ipaq.cpp b/libopie2/opiecore/device/odevice_ipaq.cpp
index d20ea4d..cc4b01a 100644
--- a/libopie2/opiecore/device/odevice_ipaq.cpp
+++ b/libopie2/opiecore/device/odevice_ipaq.cpp
@@ -105,371 +105,377 @@ struct i_button ipaq_buttons [] = {
     "buttonsettings", "raise()" },
     { Model_iPAQ_H31xx | Model_iPAQ_H36xx | Model_iPAQ_H37xx | Model_iPAQ_H38xx | Model_iPAQ_H39xx | Model_iPAQ_H5xxx,
     Qt::Key_F24, QT_TRANSLATE_NOOP("Button", "Record Button"),
     "devicebuttons/ipaq_record",
     "QPE/VMemo", "toggleRecord()",
     "sound", "raise()" },
 };
 
 void iPAQ::init()
 {
     d->m_vendorstr = "HP";
     d->m_vendor = Vendor_HP;
 
     QFile f ( "/proc/hal/model" );
 
     if ( f. open ( IO_ReadOnly )) {
         QTextStream ts ( &f );
 
         d->m_modelstr = "H" + ts. readLine();
 
         if ( d->m_modelstr == "H3100" )
             d->m_model = Model_iPAQ_H31xx;
         else if ( d->m_modelstr == "H3600" )
             d->m_model = Model_iPAQ_H36xx;
         else if ( d->m_modelstr == "H3700" )
             d->m_model = Model_iPAQ_H37xx;
         else if ( d->m_modelstr == "H3800" )
             d->m_model = Model_iPAQ_H38xx;
         else if ( d->m_modelstr == "H3900" )
             d->m_model = Model_iPAQ_H39xx;
         else if ( d->m_modelstr == "H5400" )
             d->m_model = Model_iPAQ_H5xxx;
         else
             d->m_model = Model_Unknown;
 
         f. close();
     }
 
     switch ( d->m_model ) {
         case Model_iPAQ_H31xx:
         case Model_iPAQ_H38xx:
             d->m_rotation = Rot90;
             break;
         case Model_iPAQ_H36xx:
         case Model_iPAQ_H37xx:
         case Model_iPAQ_H39xx:
 
         default:
             d->m_rotation = Rot270;
             break;
         case Model_iPAQ_H5xxx:
             d->m_rotation = Rot0;
         }
 
     f. setName ( "/etc/familiar-version" );
     if ( f. open ( IO_ReadOnly )) {
         d->m_systemstr = "Familiar";
         d->m_system = System_Familiar;
 
         QTextStream ts ( &f );
         d->m_sysverstr = ts. readLine(). mid ( 10 );
 
         f. close();
     } else {
         f. setName ( "/etc/oz_version" );
 
                     if ( f. open ( IO_ReadOnly )) {
             d->m_systemstr = "OpenEmbedded/iPaq";
             d->m_system = System_Familiar;
 
             QTextStream ts ( &f );
             ts.setDevice ( &f );
             d->m_sysverstr = ts. readLine();
             f. close();
         }
     }
 
     m_leds [0] = m_leds [1] = Led_Off;
 
     m_power_timer = 0;
 
 }
 
 void iPAQ::initButtons()
 {
     if ( d->m_buttons )
         return;
 
     if ( isQWS( ) )
         QWSServer::setKeyboardFilter ( this );
 
     d->m_buttons = new QValueList <ODeviceButton>;
 
     for ( uint i = 0; i < ( sizeof( ipaq_buttons ) / sizeof( i_button )); i++ ) {
         i_button *ib = ipaq_buttons + i;
         ODeviceButton b;
 
         if (( ib->model & d->m_model ) == d->m_model ) {
             b. setKeycode ( ib->code );
             b. setUserText ( QObject::tr ( "Button", ib->utext ));
             b. setPixmap ( Resource::loadPixmap ( ib->pix ));
             b. setFactoryPresetPressedAction ( OQCopMessage ( makeChannel ( ib->fpressedservice ), ib->fpressedaction ));
             b. setFactoryPresetHeldAction ( OQCopMessage ( makeChannel ( ib->fheldservice ), ib->fheldaction ));
 
             d->m_buttons->append ( b );
         }
     }
     reloadButtonMapping();
 
     QCopChannel *sysch = new QCopChannel ( "QPE/System", this );
     connect ( sysch, SIGNAL( received( const QCString &, const QByteArray & )), this, SLOT( systemMessage ( const QCString &, const QByteArray & )));
 }
 
 QValueList <OLed> iPAQ::ledList() const
 {
     QValueList <OLed> vl;
     vl << Led_Power;
 
     if ( d->m_model == Model_iPAQ_H38xx )
         vl << Led_BlueTooth;
     return vl;
 }
 
 QValueList <OLedState> iPAQ::ledStateList ( OLed l ) const
 {
     QValueList <OLedState> vl;
 
     if ( l == Led_Power )
         vl << Led_Off << Led_On << Led_BlinkSlow << Led_BlinkFast;
     else if ( l == Led_BlueTooth && d->m_model == Model_iPAQ_H38xx )
         vl << Led_Off; // << Led_On << ???
 
     return vl;
 }
 
 OLedState iPAQ::ledState ( OLed l ) const
 {
     switch ( l ) {
         case Led_Power:
             return m_leds [0];
         case Led_BlueTooth:
             return m_leds [1];
         default:
             return Led_Off;
     }
 }
 
 bool iPAQ::setLedState ( OLed l, OLedState st )
 {
     static int fd = ::open ( "/dev/touchscreen/0", O_RDWR | O_NONBLOCK );
 
     if ( l == Led_Power ) {
         if ( fd >= 0 ) {
             LED_IN leds;
             ::memset ( &leds, 0, sizeof( leds ));
             leds. TotalTime  = 0;
             leds. OnTime     = 0;
             leds. OffTime    = 1;
             leds. OffOnBlink = 2;
 
             switch ( st ) {
                 case Led_Off      : leds. OffOnBlink = 0; break;
                 case Led_On       : leds. OffOnBlink = 1; break;
                 case Led_BlinkSlow: leds. OnTime = 10; leds. OffTime = 10; break;
                 case Led_BlinkFast: leds. OnTime =  5; leds. OffTime =  5; break;
             }
 
             if ( ::ioctl ( fd, LED_ON, &leds ) >= 0 ) {
                 m_leds [0] = st;
                 return true;
             }
         }
     }
     return false;
 }
 
 
 bool iPAQ::filter ( int /*unicode*/, int keycode, int modifiers, bool isPress, bool autoRepeat )
 {
     int newkeycode = keycode;
 
     switch ( keycode ) {
         // H38xx/H39xx have no "Q" key anymore - this is now the Mail key
         case HardKey_Menu: {
             if (( d->m_model == Model_iPAQ_H38xx ) ||
                 ( d->m_model == Model_iPAQ_H39xx ) ||
                 ( d->m_model == Model_iPAQ_H5xxx)) {
                 newkeycode = HardKey_Mail;
             }
             break;
         }
 
-        // Rotate cursor keys 180°
+        // Rotate cursor keys 180° or 270°
         case Key_Left :
         case Key_Right:
         case Key_Up   :
         case Key_Down : {
             if (( d->m_model == Model_iPAQ_H31xx ) ||
                 ( d->m_model == Model_iPAQ_H38xx )) {
                 newkeycode = Key_Left + ( keycode - Key_Left + 2 ) % 4;
             }
+            // Rotate the cursor keys by 270°
+            // keycode - Key_Left = position of the button starting from left clockwise
+            // add the rotation to it and modolo. No we've the original offset
+            // add the offset to the Key_Left key
+            if ( d-> m_model == Model_iPAQ_H5xxx )
+                newkeycode = Key_Left + ( keycode - Key_Left + 3 ) % 4;
             break;
         }
 
         // map Power Button short/long press to F34/F35
         case Key_SysReq: {
             if ( isPress ) {
                 if ( m_power_timer )
                     killTimer ( m_power_timer );
                 m_power_timer = startTimer ( 500 );
             }
             else if ( m_power_timer ) {
                 killTimer ( m_power_timer );
                 m_power_timer = 0;
                 QWSServer::sendKeyEvent ( -1, HardKey_Suspend, 0, true, false );
                 QWSServer::sendKeyEvent ( -1, HardKey_Suspend, 0, false, false );
             }
             newkeycode = Key_unknown;
             break;
         }
     }
 
     if ( newkeycode != keycode ) {
         if ( newkeycode != Key_unknown )
             QWSServer::sendKeyEvent ( -1, newkeycode, modifiers, isPress, autoRepeat );
         return true;
     }
     else
         return false;
 }
 
 void iPAQ::timerEvent ( QTimerEvent * )
 {
     killTimer ( m_power_timer );
     m_power_timer = 0;
     QWSServer::sendKeyEvent ( -1, HardKey_Backlight, 0, true, false );
     QWSServer::sendKeyEvent ( -1, HardKey_Backlight, 0, false, false );
 }
 
 
 void iPAQ::playAlarmSound()
 {
 #ifndef QT_NO_SOUND
     static Sound snd ( "alarm" );
     int fd;
     int vol;
     bool vol_reset = false;
 
     if (( fd = ::open ( "/dev/sound/mixer", O_RDWR )) >= 0 ) {
         if ( ::ioctl ( fd, MIXER_READ( 0 ), &vol ) >= 0 ) {
             Config cfg ( "qpe" );
             cfg. setGroup ( "Volume" );
 
             int volalarm = cfg. readNumEntry ( "AlarmPercent", 50 );
             if ( volalarm < 0 )
                 volalarm = 0;
             else if ( volalarm > 100 )
                 volalarm = 100;
             volalarm |= ( volalarm << 8 );
 
             if ( ::ioctl ( fd, MIXER_WRITE( 0 ), &volalarm ) >= 0 )
                 vol_reset = true;
         }
     }
 
     snd. play();
     while ( !snd. isFinished())
         qApp->processEvents();
 
     if ( fd >= 0 ) {
         if ( vol_reset )
             ::ioctl ( fd, MIXER_WRITE( 0 ), &vol );
         ::close ( fd );
     }
 #endif
 }
 
 
 bool iPAQ::setSoftSuspend ( bool soft )
 {
     bool res = false;
     int fd;
 
     if (( fd = ::open ( "/proc/sys/ts/suspend_button_mode", O_WRONLY )) >= 0 ) {
         if ( ::write ( fd, soft ? "1" : "0", 1 ) == 1 )
             res = true;
         else
             ::perror ( "write to /proc/sys/ts/suspend_button_mode" );
 
         ::close ( fd );
     }
     else
         ::perror ( "/proc/sys/ts/suspend_button_mode" );
 
     return res;
 }
 
 
 bool iPAQ::setDisplayBrightness ( int bright )
 {
     bool res = false;
     int fd;
 
     if ( bright > 255 )
         bright = 255;
     if ( bright < 0 )
         bright = 0;
 
     if (( fd = ::open ( "/dev/touchscreen/0", O_WRONLY )) >= 0 ) {
         FLITE_IN bl;
         bl. mode = 1;
         bl. pwr = bright ? 1 : 0;
         bl. brightness = ( bright * ( displayBrightnessResolution() - 1 ) + 127 ) / 255;
         res = ( ::ioctl ( fd, FLITE_ON, &bl ) == 0 );
         ::close ( fd );
     }
     return res;
 }
 
 int iPAQ::displayBrightnessResolution() const
 {
     switch ( model()) {
         case Model_iPAQ_H31xx:
         case Model_iPAQ_H36xx:
         case Model_iPAQ_H37xx:
                     return 128;  // really 256, but >128 could damage the LCD
 
         case Model_iPAQ_H38xx:
         case Model_iPAQ_H39xx:
             return 64;
         case Model_iPAQ_H5xxx:
             return 255;
 
         default:
             return 2;
     }
 }
 
 
 bool iPAQ::hasLightSensor() const
 {
     return true;
 }
 
 int iPAQ::readLightSensor()
 {
     int fd;
     int val = -1;
 
     if (( fd = ::open ( "/proc/hal/light_sensor", O_RDONLY )) >= 0 ) {
         char buffer [8];
 
         if ( ::read ( fd, buffer, 5 ) == 5 ) {
             char *endptr;
 
             buffer [4] = 0;
             val = ::strtol ( buffer + 2, &endptr, 16 );
 
             if ( *endptr != 0 )
                 val = -1;
         }
         ::close ( fd );
     }
 
     return val;
 }
 
 int iPAQ::lightSensorResolution() const
 {
     return 256;
 }