Setting of comm ports - adding second com port - redirection

[stukennedyuk]

I've found 'lx-viewer' which should let me view and plot '.DXF' format CAD files to my HP (hpgl) plotter. A couple of things are stopping me from doing this! How do I set up baud, parity, bits and handshaking on my serial port, how do I get the second coms port recognised by Knoppix and what is the best way of outputting the plot file to the device?

cp plot.hpgl /dev/ttys0 ?????

Many thanks, I'll do a 'google' in the meantime!

Stu.....

[Dave_Bechtel]

--See ' man setserial ', and /etc/init.d/setserial. To check your serial port current config:
' setserial -a /dev/ttyS0 ' as root.

--You can also:
' cat /proc/tty/driver/serial ' as any user:
serinfo:1.0 driver:5.05c revision:2001-07-08
0: uart:16550A port:3F8 irq:4 baud:9600 tx:8 rx:60 brk:3
1: uart:16550A port:2F8 irq:3 baud:9600 tx:6 rx:0

--From google, here is example of something you could put into /etc/serial.conf:
/dev/ttyS0 uart 16550A port 0x03f8 irq 4 baud_base 115200 spd_normal skip_test

--As far as getting the plot to the device, maybe use cat(?) But you did say lx-viewer should let you do the plot directly to the device...


I've found 'lx-viewer' which should let me view and plot '.DXF' format CAD files to my HP (hpgl) plotter. A couple of things are stopping me from doing this! How do I set up baud, parity, bits and handshaking on my serial port, how do I get the second coms port recognised by Knoppix and what is the best way of outputting the plot file to the device?

cp plot.hpgl /dev/ttys0 ?????

Many thanks, I'll do a 'google' in the meantime!

Stu.....

[stukennedyuk]

Thanks for that. I found a command 'stty' - set tty (set teletype) which lets you change bits per second, parity and handshake. e.g.

stty 19200 cs8 -parenb crtscts -echo -F /dev/ttyS0

-would set baud to 19200, number of bits to 8, turn parity off, e.g. 'none'set hardware handshake and turn off echo on serial port ttyS0 (the first one)

Stu.....

[stukennedyuk]

Looking at the qcad website (http://www.ribbonsoft.com/qcad.html) shows that support for hp/gl is postponed. LX-viewer will open qcad .dxf files and will output them to the plotter (use print to file first them cat filename.hpgl /dev/ttySx ) but it's not a practical solution, for a couple of reasons. (font scaling and pen handling).

Time to check out some other cad packages!

Just thought you'd like to know!

Stu.....