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From: LEIF@SLACVM.SLAC.STANFORD.EDU
Newsgroups: comp.sys.handhelds
Subject: Re: HP48 buffer read problems (still).
Message-ID: <91093.182342LEIF@SLACVM.SLAC.STANFORD.EDU>
Date: 4 Apr 91 02:23:42 GMT
References: <91092.195502LEIF@SLACVM.SLAC.STANFORD.EDU>
 <21685@shlump.nac.dec.com>
Organization: Stanford Linear Accelerator Center
Lines: 32

In article <21685@shlump.nac.dec.com>, edp@jareth.enet.dec.com (Eric Postpischil
(Always mount a scratch monkey.)) says:
>
>There must be something else going on.  What makes you think you
>are losing data?

I am reading from a meter, which outputs a number of the form: xx.x<cr>
every second.  I see the annunciator in the upper left of the hp48 flash
every second, but the characters I get from the buffer sometimes fail
to be displayed by my program, and don't appear on the stack after program
ends.  Say I run for 1 minute, I should get 60 reads on the stack, well I
usually get from 45-55 numbers (converted using STR\-> ), even though I do
see the annunciator flash 60 times. (What is this annunciator supposed
represent anyway?  It looks like half an infinity symbol with an arrow
sticking out of it's side :-)

>I seem to recall you stated in your original post that you could not get
>flow-control to work.  This should be fairly simple, just a matter of
>setting the third number in IOPAR to 1.  Are you having problems setting
>flow-control on the computer side?

I haven't used flow-control, so I'll have to look into it. I am not; however,
reading input to the 48 from a computer, rather from a digital meter, which
thinks it is printing.  Thanks for the suggestions, I'll try accumulating
to a string, then splitting the string up and converting to numbers at the
end of the program.  As to the flow-control, I will have to look into what it
is supposed to accomplish before I try to use it.  Thanks again!

P.S. Any and all other suggestions still welcome! :-)

Later...                                     Leif Johnson
                                             Leif@SLACVM.SLAC.STANFORD.EDU