[ale] quick way to raise DTR on serial port?
Christopher Bergeron
christopher at bergeron.com
Wed Dec 29 17:55:49 EST 2004
Thanks for the help guys. The port is working fine. It turns out it
was a cable that I _thought_ was a serial extension cable, but
apparently has a different pinout.
Man, I need to label those things.
Anyway, thanks for the debugging tips.
Cheers,
CB
Christopher Fowler wrote:
>That is a good idea.
>
>You can also run a program like minicom.
>
>Run minicom on that port and tie pins 2 & 3 together with a wire. This
>will loopback. What you type you'll see.
>
>
>On Tue, 2004-12-28 at 10:17, Doug McNash wrote:
>
>
>>Opening the tty port should raise DTR if the bit rate is non-zero so
>>
>>stty 9600 -hupcl < /dev/ttyS0
>>
>>should do it. Use stty hupcl if you want to turn if off after close.
>>
>>sleep 1 < /dev/ttyS0 to pulse it for about a sec.
>>
>>
>>On Mon, 2004-12-27 at 12:43, Christopher Bergeron wrote:
>>
>>
>>>Does anyone know of a quick/simple/easy way I can raise the DTR signal
>>>on my serial port? I'm trying to determine if the port is bad.
>>>
>>>
>>>
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