Re: serial line initialization

[David Wright <d.wright@open.ac.uk>]

Quoting John Conover (conover@inow.com):
> 
> I just upgraded from Slackware 1.2 to Debian 2.1, (yes, it was a big
> jump.)
> 
> Do I still have to:
> 
>     ${SETSERIAL} /dev/cua2 ${AUTO_IRQ} skip_test autoconfig spd_vhi
>     /bin/stty crtscts < /dev/cua1
> 
> in /etc/rc0.d, and then spec the baud rate at 38400 in the
> applications using the serial line?

You should not use cua devices here as they're obsolete
(and have been a long time).

Out of the box you should get:

/dev/ttyS0, Line 0, UART: 16550A, Port: 0x03f8, IRQ: 4
        Baud_base: 115200, close_delay: 50, divisor: 0
        closing_wait: 3000, closing_wait2: infinte
        Flags: spd_normal skip_test session_lockout

/dev/ttyS1, Line 1, UART: 16550A, Port: 0x02f8, IRQ: 3
        Baud_base: 115200, close_delay: 50, divisor: 0
        closing_wait: 3000, closing_wait2: infinte
        Flags: spd_normal skip_test session_lockout

/dev/ttyS2, Line 2, UART: unknown, Port: 0x03e8, IRQ: 4
        Baud_base: 115200, close_delay: 50, divisor: 0
        closing_wait: 3000, closing_wait2: infinte
        Flags: spd_normal skip_test

/dev/ttyS3, Line 3, UART: unknown, Port: 0x02e8, IRQ: 3
        Baud_base: 115200, close_delay: 50, divisor: 0
        closing_wait: 3000, closing_wait2: infinte
        Flags: spd_normal

so you might have to set your IRQ for ttyS2 in /etc/rc.boot/0setserial.
Note that when you move from slink 2.1 to potato, that file will then
be in /etc/init.d/setserial with proper /etc/rcS.d symlinks.

$ stty -a < /dev/ttyS1
speed 115200 baud; rows 0; columns 0; line = 0;
intr = ^C; quit = ^\; erase = ^?; kill = ^U; eof = ^D; eol = <undef>;
eol2 = <undef>; start = ^Q; stop = ^S; susp = ^Z; rprnt = ^R; werase = ^W;
lnext = ^V; flush = ^O; min = 1; time = 0;
-parenb -parodd cs8 -hupcl -cstopb cread clocal crtscts
ignbrk -brkint ignpar -parmrk -inpck -istrip -inlcr -igncr -icrnl -ixon -ixoff
-iuclc -ixany -imaxbel
-opost -olcuc -ocrnl -onlcr -onocr -onlret -ofill -ofdel nl0 cr0 tab0 bs0 vt0
ff0
-isig -icanon -iexten -echo -echoe -echok -echonl -noflsh -xcase -tostop
-echoprt -echoctl -echoke

so your vhi hack and crtscts should be redundant here.

Cheers,

-- 
Email:  d.wright@open.ac.uk   Tel: +44 1908 653 739  Fax: +44 1908 655 151
Snail:  David Wright, Earth Science Dept., Milton Keynes, England, MK7 6AA
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official stationery. Views expressed here are either my own or plagiarised.