Thanks to the "Owfs and DS2413 -- SOLVED" topic on this list, the problem is solved and I am able to initialize the LCD display flawlessly.
My feeling was I have to send (write) "1" to the PIO if I need to get "1" (HI, 5V) on the DS2408 data pin. Opposite is the truth. For example if you write: PIO_ALL="1,1,1,1,1,1,1,1," you will get LO TTL logic level on the all data pins of the DS2408. It took me the whole day to get it working :) Petr PJ> Simon Natterer <simon <at> natterer-legau.de> writes: >> >> Paul Alfille wrote: >> >> >In short, the datasheet is confusign to me. I gather there is a mode >> >where the DS2408 is used for relatively high-speed communication through >> >it's PIO pins, with the strobe pin used for handshaking. This fits >> >poorly into the OWFS model. OWFS pretends the 1-wire devices are >> >block-devices (think of 1-wire as a scsi controller), not a character >> >devices (like a serial line). >> > >> > >> >> It seems to work for me! The RSTZ pin signals correctly >> when the written data is valid, for me it is connected to >> the display-enable-pin and the display works. So I think >> the RSTZ pin generates a falling edge after each >> byte is written. >> So if in owfs strobe is set to 1 it has this behavoir, if it >> is set to 0 the RSTZ pin is used as a reset pin. >> I don't see a problem. PJ> Simon, PJ> I am trying to experiment with DS2408 to drive LCD display. I am trying to write PJ> the code in OWPython binding. But I can't even initialize the LCD display. Can PJ> you post the snippet of the LCD initialization code please? PJ> Thanks a lot PJ> Petr PJ> ------------------------------------------------------- PJ> This SF.Net email is sponsored by: PJ> Power Architecture Resource Center: Free content, downloads, discussions, PJ> and more. http://solutions.newsforge.com/ibmarch.tmpl PJ> _______________________________________________ PJ> Owfs-developers mailing list PJ> [email protected] PJ> https://lists.sourceforge.net/lists/listinfo/owfs-developers ------------------------------------------------------- This SF.Net email is sponsored by: Power Architecture Resource Center: Free content, downloads, discussions, and more. http://solutions.newsforge.com/ibmarch.tmpl _______________________________________________ Owfs-developers mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/owfs-developers
