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For 2023 (and 2024 ...) - we are now fully retired from IT training.
We have made many, many friends over 25 years of teaching about Python, Tcl, Perl, PHP, Lua, Java, C and C++ - and MySQL, Linux and Solaris/SunOS too. Our training notes are now very much out of date, but due to upward compatability most of our examples remain operational and even relevant ad you are welcome to make us if them "as seen" and at your own risk.

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How to send ASCII control characters

Posted by doublea1535 (doublea1535), 19 August 2006
I am having a bit of a problem trying to send ASCII control characters like spacebar. One thing I am curious about is what code type do I use? decimal?

I am referencing this list:

http://www.i-logic.com/serial/ascii.htm

I thought it was decimal so I am trying:

send \032
send \32

This is not have the desired effect however.

Posted by admin (Graham Ellis), 19 August 2006
send \x20
will send a space character; replace the 20 with ANY other hex code that you need for any one of the 256 ASCII characters.

For a space, you can also write
send " "
(there's a space typed between the two double quotes)

Posted by doublea1535 (doublea1535), 19 August 2006
Thanks!  



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