Roy Walker (walkerr@hsdwl.utc.com) wrote:

> This one caught my attention. How do you interpolate between two table
>points with 8 bytes of code?? Am I missing something here?

Roy:

Yeah, probably.  Off the top of my head, I'd do this thermistor
thing by drawing the voltage vs. temperature curve, splitting it
into some small ( < 10, probably... 8 would be a good choice) number of
sections, each of which would be nearly linear, then just putting the
slopes of the linear approximations of those sections in the lookup
table.  If I needed speed, I'd put the endpoints of the lines in the
table, too.

Finding a point somewhere on a line, given another point on the line and
a slope, may take even less than 8 instructions.

-Andy


--
Andrew Warren - fastfwd@ix.netcom.com
Fast Forward Engineering, Vista, California