Is there 4 gray STN LCD device driver for QNX RTOS?

QNX Newsgroups (Archives) qdn.public.ddk.graphics
1

Hello,

Now my team try to develop a unit using QNX. This unit has a 4 gray STN LCD
display.
So we need 4 gray STN LCD device driver for QNX. But I think there is no
black and wihte LCD display driver in QNX. Is there someone out there
knowing about this?

Thanks in advance.

Jeong Min Kim

2

Jeong Min Kim <jimmy68@softhome.net> wrote:

Hello,

Now my team try to develop a unit using QNX. This unit has a 4 gray STN LCD
display.
So we need 4 gray STN LCD device driver for QNX. But I think there is no
black and wihte LCD display driver in QNX. Is there someone out there
knowing about this?

I don’t know of the existence of such a driver, but it would be possible
to write one. There is already a 16-color driver which ships in
source code form (devg-vga.so) which would make a good starting point.
To make it work on a grayscale panel you might need to create a special
palette file, although one of the .pal files that ship with Photon
might do the trick.

Dave

3

QNX Photon has two kind of driver,
one is accelerated mode for hardware graphics and the other is
standard graphics like as vesa , vga.
Generally, these modes have a capabilities of colors with 4, 8, 16, 24,
32bit.
In case of 2bit (4Gray), the driver could be made by custom engineering
work.

For more reference, the driver “cotulla graphics” supports only 8 and 16 bit
modes.
Thanks.

Byoung-Hweh Huh
RT Solutions Inc.

“Jeong Min Kim” <jimmy68@softhome.net> wrote in message
news:act155$672$1@inn.qnx.com…

Hello,

Now my team try to develop a unit using QNX. This unit has a 4 gray STN
LCD
display.
So we need 4 gray STN LCD device driver for QNX. But I think there is no
black and wihte LCD display driver in QNX. Is there someone out there
knowing about this?

Thanks in advance.

Jeong Min Kim