Thank you for the clarification. Paul Alfille
-----Original Message----- From: [EMAIL PROTECTED] on behalf of Eric Vickery Sent: Thu 8/3/2006 9:19 PM To: owfs-developers@lists.sourceforge.net Subject: Re: [Owfs-developers] LCD control with DS2408 That is a really strange reference design and I hadn't see that one before, it doesn't make any sense to tie D7 to ground. All of the other 1-Wire designs I have seen are 4 bit, including AAGs and the one in the data sheet for the DS2408. Since there are only 8 I/O lines and RSTZ on the DS2408 you can't use an 8 bit interface to the LCD because with the strobe line and the DATA/CMD line it takes 10 I/O lines for an 8 bit interface. The main difference is that our (Hobby Boards) design uses a different pinout between the DS2408 and the LCD. Eric www.hobby-boards.com -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Paul Alfille Sent: Thursday, August 03, 2006 6:59 PM To: owfs-developers@lists.sourceforge.net Subject: Re: [Owfs-developers] LCD control with DS2408 There a two published designs. The Maxim/AAG design is 8 bit. The Hobby Boards is 4 bit. The commands are prefixed H and M. Paul Alfille On 8/3/06, Jan Kandziora <[EMAIL PROTECTED]> wrote: Dear all, for my project, a Onewire controlled HD44780 display would come in handy. I see owfs supports the reference design from http://www.maxim-ic.com/appnotes.cfm/appnote_number/3286 <http://www.maxim-ic.com/appnotes.cfm/appnote_number/3286> As the D7 line is tied to GND in that schematic, it's not possible to use all the characters (and commands) in the 44780's ROM in 8 Bit mode. That brings up my question: Does owfs use the 8 Bit mode of the 44780 in that design, or the 4 Bit mode? Kind regards Jan --
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