Messages in this thread | | | Date | Sun, 9 Oct 2005 00:27:11 +0200 | From | Samuel Thibault <> | Subject | Re: [patch 3/4] new serial flow control |
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Hi,
I'm re-opening a somewhat old thread about serial flow control methods:
Russell King, le Wed 05 Jan 2005 23:53:01 +0000, a écrit : > we have other people > who want to use their on-board hardware RS485 flow control options on > UARTs for their application, which means we need an RS485 flow control > method. (They can't select it without accessing the hardware directly.) > > So, we now seem to have: > > Standard flow control > CTVB flow control > RS485 RTS flow control
Let's add a new one: Inka braille devices, which uses RTS/CTS as acknowledge strobes for each character.
> I still believe that flow control should be enabled by CRTSCTS, but > the flow control personality set by other means. > > Therefore, I think this requires further discussion, especially with > Alan (who seems to be the tty layer god now) to work out some sort of > reasonable interface.
How could this look like in userspace? Something like
#define CRTSCTS_RS232 0 #define CRTSCTS_RS485 1 #define CRTSCTS_TVB 2 #define CRTSCTS_INKA 3 int method = CRTSCTS_RS485; ioctl(fd,TIOCMSFLOWCTRL,&method);
(and the converse TIOCMGFLOWCTRL)?
Regards, Samuel - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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