the numbers must be checked with datasheet it´s just a example... check onewire speed check owfs code sent to onewire device sum the number of bits, multiply by onewire bits/seconds you will get the minimal speed check with real application you will get current speed (minimal + latencies + memory + cpu times + operational system speed + etc) check with real aplication is better with real eletronic devices not eyes and leds (they aren´t so precise like eletronic devices)
2011/1/27 patyrk <[email protected]>: > 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 > -- Roberto Spadim Spadim Technology / SPAEmpresarial ------------------------------------------------------------------------------ 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
