[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
RE: RS-485 problem
If you disable the option you can't use 2-wire 485, i.e. the IOCTL
available. If you enable the option you can use the IOCTL above to
RS422 and RS485 (2-wire mode) by setting the enable-parameter to 0
(RS422) or 1 (RS485).
From: email@example.com">mailto:firstname.lastname@example.org] On
Behalf Of Jayson Ingels
Sent: Wednesday, September 29, 2004 11:34 AM
Subject: Re: RS-485 problem
We're using a devboard 83. What does the 'Enable RS-485 support' option
in the kernel mean?
Am I right in saying that when this option is disabled that I'm using
RS-422 and when it is enabled that I'm using RS-485?
----- Original Message -----
From: Jayson Ingels
Sent: Wednesday, September 22, 2004 10:28 AM
Subject: RS-485 problem
We have two devboard 83's connected to each other via RS-485.
When transmitting data to /dev/ttyS3 from one board to the other using
echo "hello" > /dev/ttyS3
it works fine, but when doing the same from the other board that
received the data earlier,
the command doesn't respond i.e. the board hangs until I press CTRL C.
Any suggestions are welcome.