Dnia 2011-01-28, pią o godzinie 03:35 -0200, Roberto Spadim pisze:
> for "Û" you will use in you program \xFF for example, you will not use
> "Û" since it's not \xFF (8 new characters) a conversion MUST be done
> between owfs and your bash or program (not between owfs and onewire +
> display)
> got?
Yes I understand that. I think that these addresses start at 00h to 07h
in LCD code page. So if I put "Û" at 00h in CGRAM and then want to
display it I need to do smth like this
printf \x00 > LCD_H/screen

> this's a feature request for owfs: *write 1 character bitmap to display rom*
That's correct. Also updating only one character bitmap would be usefull.

The is might be an issue with other languages which may require more
than 8 additional chars(of if you want to use capital letters). Then
first you have to scan your message determine which additional chars you
need and if they’re not in CGROM put them there. Of course user have to
keep track what was written to the CG ROM.

As for Paul's concerns

> Ok, I'll have to look and make sure the CGRAM programming can be done
> in 4bit mode and that we have all the needed pins available. Also a
> working code example (in any language) would be nice.

Form what I read in specs it's possible with available pins. 
Unfortunately I don't have acess to my LCD now. Maybe next weekend.

I think the bash code will look smth like this.

#assuming the LCD is initialized 
printf "\x0" > strobe   # not sure if this is right

#set CG RAM ram address to 00f  RS is set to instruction so PIO.3=0 
#PIO.3      
#RS    R/W  d7 d6 ............d0
#0      0   0  1  (6 bit address) the address if in range from 0 to 63  
printf "1,1,1,0,0,0,1,0" >PIO.ALL
printf "1,1,1,0,0,0,0,0" >PIO.ALL

#after setting the address you write like to normal DD RAM, the counter
#PIO3=1
#should increment itself
#1      0   8 bits
#1 bit
printf "1,1,1,1,x,x,x,x" >PIO.ALL
printf "1,1,1,1,x,x,x,x" >PIO.ALL
#2 bit and so on



-- 
p4trykx


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