Dnia 2011-01-27, czw o godzinie 16:21 -0200, Roberto Spadim pisze: > check onewire protocol speed > how many bits/second (i think it´s about 16kbits/s) > how many bits to change port bits (i think about 200bits? must check...) > with these numbers you have onewire speed somethink like: > 200bits * 16kbit/s = 0,0125 seconds
So 1 byte all PIOs at once takes 0,0225s? Then writing 128 bytes to set whole CG RAM I think we have to write 2*128 since it's 4 bit mode 128*2*200bits = 51 200 bits to write at 16kbits/s give approximately 3.2 seconds? As soon as I get access to my LCD_H I will do some performance checks. I will attach a LED through a transistor to 1-wire line and check how long it takes to display 2 lines of text. -- 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
