On Thu, Sep 03, 2009 at 09:42:20PM +0200, Peter Hüwe wrote: > Am Thursday 03 September 2009 20:55:17 schrieb Greg KH: > > On Thu, Sep 03, 2009 at 08:49:08PM +0200, Peter Huewe wrote: > > > > > > > > while :; do > > > > read key > > > > case key in > > > > 'Up') ... > > > > ... > > > > esac > > > > echo "Blah" > > > > done </dev/keypad >/dev/lcd > > > > > Well, if it all can work in userspace using lcdproc, that's great. > > > > As long as everyone agrees that's the best way, I'll be glad to drop the > > driver, just let me know. > > > Hmm, > I'm not quite sure myself wether the driver is still useful or not. > The main 'disadvantage' of lcdproc is that you can't use simple shell pipes to > write something on the display (afaik), but rather you have to talk to the > LCDd (the lcdproc deamon) using sockets or by using telnet. > So something like echo "test" > /dev/lcd is unfortunately not possible, and > you can't write something to it from kernelspace directly. > > Moreover another thing is, even if you really like writing code with sockets > (*g*), lcdproc has a rather extensive api [ > http://lcdproc.sourceforge.net/docs/current-dev.html#language ] > The deamon can handle multiple clients, which each can create multiple pages, > with different priorities - so it isn't as intuitive as a simple echo "test" > > /dev/lcd > > Example session: (I indented lcdproc's responses) > > telnet localhost 13666 > Trying 127.0.0.1... > Connected to localhost. > Escape character is '^]'. > hello > connect LCDproc 0.5.2 protocol 0.3 lcd wid 20 hgt 2 cellwid 5 cellhgt 8 > client_set -name Example > success > screen_add myscreen > success > ignore myscreen > listen myscreen > screen_set myscreen -priority alert > success > listen myscreen > widget_add myscreen test title > success > widget_set myscreen test "hello world" > success I agree it is more complex, but it is a standard and works for all types of these devices, which is more than this single driver can say :) I recommend dropping it and just pointing people at lcdproc, as it seems active and useful. Is that ok with everyone? thanks, greg k-h _______________________________________________ devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxx http://driverdev.linuxdriverproject.org/mailman/listinfo/devel
