AFAIK HD44780 does not support writing to ROM (Read Only Memory) > what this new display/owfs feature should do? > update full rom
From what I've read in specs updating ROM is not possible. > update character rom Just this. These additional characters are needed because standard LCD does not have for instance Polish letters ążćł... > read full rom > read character rom These I think is not possible because R/W pin is no permanently connected in HD and Maxim design. > for owfs (we use files) > maybe some files: > 1)update_display_cgram > ->send full cgram This would be enough I think > 2)update_display_cgram_X (X start with 1 end with 8) > ->send a character bitmap This for updating. Or it could be similar to LCD_H/screenyx LCD_H/update_display_cgramx index:bitmap > do you have display protocol to do this job? CG ROM has 64 bytes. Each bitmap is 8 bytes. First set CG RAM address RS R/W d7d6 ...d0 0 0 0 1 (6 bit address) the address if in range from 0 to 63 after setting the address you write like to normal DD RAM, the counter should increment itself 1 0 8 bits So I think there shouldn't be a lot of code changes. -- p4trykx ------------------------------------------------------------------------------ Special Offer-- Download ArcSight Logger for FREE (a $49 USD value)! Finally, a world-class log management solution at an even better price-free! Download using promo code Free_Logger_4_Dev2Dev. Offer expires February 28th, so secure your free ArcSight Logger TODAY! http://p.sf.net/sfu/arcsight-sfd2d _______________________________________________ Owfs-developers mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/owfs-developers
