Messages in this thread | | | From | Michael Buesch <> | Subject | modifying line state manually on ttyS | Date | Mon, 7 Apr 2003 17:02:08 +0200 |
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Hi.
I have asked in many other mailing-lists, but I got no good solution for my problem, so I try to ask here, although it may not be the exaclty correct list for it.
I have developed my own device, that is connected to ttyS0. To talk to my device, I need to set the state of the TxD line manually to either 0 or 1 (+12v or -12v). What I try to say is, I don't want to write a whole byte to the port, but only one single bit, that then stays persistent on the line, until I reset its state. Better sayed, I want to handle TxD line, like it's possible for DTR-line for example.
Is kernel-support by the ttyS driver present for this, or do I have to write my own driver for my device. I'm trying to implement the driver in user-space, but I didn't find a solution to set linestate of TxD.
Regards Michael Buesch.
-- My homepage: http://www.8ung.at/tuxsoft fighting for peace is like fu**ing for virginity
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