| -rw-r--r-- | libopie/odevice.cpp | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/libopie/odevice.cpp b/libopie/odevice.cpp index c84312e..75426f9 100644 --- a/libopie/odevice.cpp +++ b/libopie/odevice.cpp @@ -626,49 +626,50 @@ bool iPAQ::setSoftSuspend ( bool soft ) 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; // 128 is the maximum if you want a decent lifetime for the LCD - bright = (int) (( ::pow ( 2, double( bright ) / 255.0 ) - 1 ) * 128.0 ); // logarithmic + if ( bright > 1 ) + bright = (int) ( 0.5 + ( ::pow ( 2, double( bright ) / 255.0 ) - 1 ) * 128.0 ); // logarithmic // bright = ( bright + 1 ) / 2; if ((( fd = ::open ( "/dev/ts", O_WRONLY )) >= 0 ) || (( fd = ::open ( "/dev/h3600_ts", O_WRONLY )) >= 0 )) { FLITE_IN bl; bl. mode = 1; bl. pwr = bright ? 1 : 0; bl. brightness = bright; res = ( ::ioctl ( fd, FLITE_ON, &bl ) == 0 ); ::close ( fd ); } return res; } int iPAQ::displayBrightnessResolution ( ) const { return 255; // really 128, but logarithmic control is smoother this way } /************************************************** * * Zaurus * |