diff options
Diffstat (limited to 'docs/DRIVER.framebuffer')
| -rw-r--r-- | docs/DRIVER.framebuffer | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/docs/DRIVER.framebuffer b/docs/DRIVER.framebuffer new file mode 100644 index 0000000..ec1c65e --- /dev/null +++ b/docs/DRIVER.framebuffer @@ -0,0 +1,44 @@ +--------------------------------------------------------------------- +GraphLCD driver library + +The Framebuffer driver +--------------------------------------------------------------------- + +Description +----------- +The Framebuffer driver writes the output to the framebuffer device at +/dev/fb0. + +The driver is optimized for a 640x480x16 framebuffer. To use it, have +a kernel with a framebuffer device (e.g. vesa fb) and add e.g. +vga=0311 to the kernel init parameters (e.g. in lilo.conf). + + +Configuration Parameters +------------------------ +The Framebuffer driver supports the following parameters in config +file: + +Width + Sets the horizontal size of the display. If this parameter is not + given, a default value of 320 pixels is used. + +Height + Sets the vertical size of the display. If this parameter is not + given, a default value of 240 pixels is used. + +UpsideDown + Rotates the display output by 180 degrees. This might be useful, if + the LCD is mounted upside-down. + Possible values: 'yes', 'no' + Default value: 'no' + +Invert + Inverts the display. + Possible values: 'yes', 'no' + Default value: 'no' + +Zoom + Determines if pixels should be drawn double sized. + Possible values: 0, 1 + |