Re: How to get serial data from USB using instrument control

[Andrius Sutas]

On Thu, Oct 25, 2012 at 12:07 AM, jd <address@hidden> wrote:

I'm still getting inconsistent data from it.  Here is a  Screen Shot
<http://imgur.com/BzgcL>   of what I'm getting.  I have a terminal window
that shows the output from Screen (not running at the same time as Octave)
just to show that correct data is there somewhere.





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You are getting exactly what you are sending. 

In your case, a string "1\r\n", which translates to 49, 13, 10 in ascii. "1" is 49 in ascii, "\n" is a newline (ascii 10), in you screenshot, you get "1" per line, and not a line of 1s, "\r" (ascii 13) is carriage return, in you screenshot, see how 1's are aligned to the left? without \r they would be in new line by one space to right making "steps of 1".

Again, use char(srl_read(s, 3)) if you want strings and not bytes without any modification to sender.