Date: Tue, 16 Nov 2004 23:33:50 -0800 From: Marcel Moolenaar <marcel@xcllnt.net> To: "Daniel O'Connor" <doconnor@gsoft.com.au> Cc: freebsd-hackers@freebsd.org Subject: Re: Userland access to modem control lines? Message-ID: <062F15EA-386B-11D9-BD35-000D93C47836@xcllnt.net> In-Reply-To: <200411171719.16370.doconnor@gsoft.com.au> References: <200411171719.16370.doconnor@gsoft.com.au>
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On Nov 16, 2004, at 10:48 PM, Daniel O'Connor wrote:
> Hi,
> Does anyone know of a way to manipulate the modem control lines from
> userland?
See <sys/ttycom.h>, in particular the following ioctls:
#define TIOCMSET _IOW('t', 109, int) /* set all modem bits */
#define TIOCMBIS _IOW('t', 108, int) /* bis modem bits */
#define TIOCMBIC _IOW('t', 107, int) /* bic modem bits */
#define TIOCMGET _IOR('t', 106, int) /* get all modem bits */
#define TIOCM_LE 0001 /* line enable */
#define TIOCM_DTR 0002 /* data terminal ready
*/
#define TIOCM_RTS 0004 /* request to send */
#define TIOCM_ST 0010 /* secondary transmit */
#define TIOCM_SR 0020 /* secondary receive */
#define TIOCM_CTS 0040 /* clear to send */
#define TIOCM_DCD 0100 /* data carrier detect
*/
#define TIOCM_RI 0200 /* ring indicate */
#define TIOCM_DSR 0400 /* data set ready */
#define TIOCM_CD TIOCM_DCD
#define TIOCM_CAR TIOCM_DCD
#define TIOCM_RNG TIOCM_RI
--
Marcel Moolenaar USPA: A-39004 marcel@xcllnt.net
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