RS-232
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Olej
Nov 18, 2009, 2:27:16 PM11/18/09
to minix3
I need link MINIX3 with other device by RS-232 (or RS-485).
When I want test link (software, cable, etc.) in Linux, I do:
- connect COM1 to COM2 with null-modem cable...
# echo 12345 > /dev/ttyS1
# cat /dev/ttyS2
12345
I can no do so in MINIX3:
# echo > 12345 /dev/tty00
# cat /dev/tty01
... NO REPLY ...
In Linux I can change ttyS parameters:
# stty speed < /dev/ttyS1
115200
# stty speed < /dev/ttyS1
115200
In MINIX3 (3.1.5) I can not do.
Why?
It's very important for embedded devices.
P.S. Sorry my English - it is not my native language.
When I want test link (software, cable, etc.) in Linux, I do:
- connect COM1 to COM2 with null-modem cable...
# echo 12345 > /dev/ttyS1
# cat /dev/ttyS2
12345
I can no do so in MINIX3:
# echo > 12345 /dev/tty00
# cat /dev/tty01
... NO REPLY ...
In Linux I can change ttyS parameters:
# stty speed < /dev/ttyS1
115200
# stty speed < /dev/ttyS1
115200
In MINIX3 (3.1.5) I can not do.
Why?
It's very important for embedded devices.
P.S. Sorry my English - it is not my native language.
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