tcl, function keys and embedded ascii extension characters

function keys and embedded ascii extension characters

Author	Message
cfk #1 / 5	function keys and embedded ascii extension characters Gentlemen: I have a user that has provided a serial program that demands function keys such as "F4" & "F2" for some of its commands. Can someone tell me the appropriate way to generate an "F4" across a serial channel opened with [open /dev/ttyS0]. Thats question one. The second question is a "lawyerly" question. The company patent attorney wants me to put the copyright symbol (the little c in a circle) and not "(c)". Can someone tell me any way to embed a copyright symbol in the source code as a comment without fubaring the plain text ascii? Charles
Fri, 13 Jul 2007 02:05:05 GMT

lvir.. #2 / 5	function keys and embedded ascii extension characters : I have a user that has provided a serial program that demands function :keys such as "F4" & "F2" for some of its commands. Can someone tell me the :appropriate way to generate an "F4" across a serial channel opened with :[open /dev/ttyS0]. Thats question one. Function keys on keyboards just generate a series of ASCII characters. Unfortunately, the specifics of the characters differs between various systems and keyboards, etc. So you need to figure out more details on what sequences the application is expecting, then just do some code like set serial [open "/dev/ttyS0" "w"] puts $serial "\033[22z" or whatever sequence your application is expecting. : The second question is a "lawyerly" question. The company patent :attorney wants me to put the copyright symbol (the little c in a circle) and :not "(c)". Can someone tell me any way to embed a copyright symbol in the :source code as a comment without fubaring the plain text ascii? Plain text 7 bit ASCII doesn't have a copyright symbol in the source code. If you move to using Unicode, then you could figure out some way to embed the character. Unfortunately, someone viewing your code in a standard editor won't _see_ the symbol there... -- <URL: http://wiki.tcl.tk/> MP3 ID tag repair < http://www.fixtunes.com/?C=17038 > Even if explicitly stated to the contrary, nothing in this posting should be construed as representing my employer's opinions.
Fri, 13 Jul 2007 22:16:26 GMT

cfk #3 / 5	function keys and embedded ascii extension characters Quote: > : I have a user that has provided a serial program that demands function > :keys such as "F4" & "F2" for some of its commands. Can someone tell me the > :appropriate way to generate an "F4" across a serial channel opened with > :[open /dev/ttyS0]. Thats question one. > Function keys on keyboards just generate a series of ASCII characters. > Unfortunately, the specifics of the characters differs between various > systems and keyboards, etc. > So you need to figure out more details on what sequences the application > is expecting, then just do some code like > set serial [open "/dev/ttyS0" "w"] > puts $serial "\033[22z" > or whatever sequence your application is expecting. Well, this looks a little like an old ansi escape sequence. If I look in one of the books behind me, I can see that an IBM PC function key should produce something like two bytes where the first one is 0x00 and the second one comes from a list like: F1: 00d 59d F2: 00d 60d F3: 00d 61d F4: 00d 62d I also vaguely remember the Esc-LeftBracket beginnings of an ansi cursor control sequence. Am I correct in thinking that there is something along that line and if so, could someone point me at a little more information so send a function key or two on a serial port, please? Charles
Sat, 14 Jul 2007 11:00:11 GMT

cfk #4 / 5	function keys and embedded ascii extension characters So, I've done a little more research and I can see some references to the F1 key as "\033[=a" which I believe is the ANSI sequence and others for the F1 key as "\0330P" (both zeros, no ohhs, I think) which I believe is a VT style escape sequence. Would one or the other of these be appropriate for sending down an open serial port connection like: set $chan [open "/dev/ttyS0" "RDWR"] puts $chan "\033[=a" to send an F1?? Charles
Sat, 14 Jul 2007 12:18:16 GMT

Cameron Lai #5 / 5	function keys and embedded ascii extension characters Quote: >So, I've done a little more research and I can see some references to the F1 >key as "\033[=a" which I believe is the ANSI sequence and others for the F1 >key as "\0330P" (both zeros, no ohhs, I think) which I believe is a VT style >escape sequence. >Would one or the other of these be appropriate for sending down an open >serial port connection like: >set $chan [open "/dev/ttyS0" "RDWR"] >puts $chan "\033[=a" >to send an F1?? >Charles Me, I like to use autoexpect <URL: http://wiki.tcl.tk/autoexpect > and save my thinking for other occasions.
Sun, 15 Jul 2007 00:08:03 GMT

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