20*log(a/b) caculation

Archiver · 2000-07-21 01:45

I have a application of calulating LOG function, I know PAK-2 math co-processor
can do this, How
do I connect this PAK 2 with BS2 ? After calulation I need send out to 16*1 LCD
. Is there anyone
help me out ? I have some experience of BS2, but how the BS2 know floating
point math when I
connect PAK2 ?

Sorry ! I have no idea of PAK2 .

TIA

Baker

Archiver · 2000-07-21 02:58

goto to the all williams web site, they have onling documentation explaining
how to interface to a stamp or pic, both look very easy and straight
forward.

Norm & Monda
Cozy MK IV #202
Ford V-6 Powered

Original Message

From: <baker_bai@c...>
To: <basicstamps@egroups.com>
Sent: Thursday, July 20, 2000 8:45 PM
Subject: [noparse][[/noparse]basicstamps] 20*log(a/b) caculation

>
> I have a application of calulating LOG function, I know PAK-2 math
co-processor can do this, How
> do I connect this PAK 2 with BS2 ? After calulation I need send out to
16*1 LCD . Is there anyone
> help me out ? I have some experience of BS2, but how the BS2 know
floating point math when I
> connect PAK2 ?
>
> Sorry ! I have no idea of PAK2 .
>
> TIA
>
> Baker
>
>
>
>
>
>
>

Archiver · 2000-07-21 03:22

You may not have to use an external floating point unit. Tracy Allen has a
page that shows some ways to do logs within the restraints of the stamp's
integer math:

http://ourworld.compuserve.com/homepages/emesys/BS2index.htm

Best, Duncan

Archiver · 2000-07-21 20:58

The PAK II uses SHIFTIN and SHIFTOUT to communication with the Stamp. We
provide a small library that allows you make calls like:

gosub floadx
gosub flog

To do the work. Sending the data out to the LCD could be done using the
fdump command (changing debug to serout -- assuming a serial LCD) or you
could convert it to an integer (FInt).

You can find the manual and many examples in the document library at
http://www.al-williams.com/awce/doclib.htm

Regards,

Al Williams
AWC

>

Original Message

> From: baker_bai@c... [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=bNzKDEY7o7KHr3QZWKIa6ld4tDhwF_r9fjTgScZf0Y8gzB8Fs9T8gxnaEsBLeXr-km-j8jQaa7t5uTenFw]baker_bai@c...[/url
> Sent: Thursday, July 20, 2000 7:46 PM
> To: basicstamps@egroups.com
> Subject: [noparse][[/noparse]basicstamps] 20*log(a/b) caculation
>
>
>
> I have a application of calulating LOG function, I know PAK-2
> math co-processor can do this, How
> do I connect this PAK 2 with BS2 ? After calulation I need send
> out to 16*1 LCD . Is there anyone
> help me out ? I have some experience of BS2, but how the BS2
> know floating point math when I
> connect PAK2 ?
>
> Sorry ! I have no idea of PAK2 .
>
> TIA
>
> Baker
>
>
>
>
>

20*log(a/b) caculation

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