Ok. Are you willing to build and test? The first pass will be a shell script or perl script or something like that to test proof-of-concept. Then we can build it in to owlib, perhaps in a subdirectory of DS2408 to reduce confusion.
Paul On Tuesday 20 December 2005 10:43 am, Krzysztof wrote: > Alfille, Paul H.,M.D. wrote: > > Thank you for the corrected link. > > > > I looked at the entry for the 2408 p38. Sending the data to the LCD > > should be no problem. The real question is incorporating the LCD > > protocol. I wonder how universal this would be, and whether it might > > be implemented as another layer over OWFS. > > That could be done with any HD44780 based LCD (they are VERY popular and > cheap so every one could make a DIY LCD and controll it via OWFS, I bet > Louis LCD is hd44780 based , and incorpotating LCD protocol , 4bit mode > would be the best idea, 5 of ds2408 outputs are being used and we have 3 > left to controll buttons, lcd backlight, whatever, if we do not write to > fast to the LCD, we do not have to check R/W status so we save 1 pin, as in > ds2408 datasheet - R/W goes to GND, dealay of 10ms is ok, that is a dealay > > >= max(LCD command execution time) ) > > http://www.google.pl/search?hl=pl&q=lcd+44780+controlling&lr= > > http://home.iae.nl/users/pouweha/lcd/lcd.shtml > > Driving that LCD is not difficult, personaly I have controlled it using > xilinx FPGA in 8bit mode and from LPT and it was not that difficult. You > can connect that LCD very easy to the LPT port and play with it too, I have > seen many C examples how to controll that lcd. You can controll LCDs up to > 4x40 that is a planty of space to use! > > Basically we set the LCD in 4bit mode during "lcd reset" and then set 4bit > data on the LCD data lines, strobe them with strobe line and then LCD > executes command. > ------------------------------------------------------- This SF.net email is sponsored by: Splunk Inc. Do you grep through log files for problems? Stop! Download the new AJAX search engine that makes searching your log files as easy as surfing the web. DOWNLOAD SPLUNK! http://ads.osdn.com/?ad_id=7637&alloc_id=16865&op=click _______________________________________________ Owfs-developers mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/owfs-developers
