pag@tcsc3b2.UUCP (Philip A. Gross) (03/08/89)
I am developing a daemon which must perform a certain amount of simple I/O with a peripheral which is connected to a serial port on a UNIX(tm) system. While most of the program has been developed, there are two areas that I have not been able to figure out how to handle. The device has two switches that will close in a pre-defined sequence, the first should bring DCD high when it closes and the second will bring CTS high when it closes. However, it is also necessary to detect when DCD is dropped (this can be handled with a trap of the HUPCL signal). I had thought that iocntrl statements of some sort would be able to handle this, but I could not extract anything meaningful from the manual regarding this issue. I am trying to avoid writing a device driver to implement this. Any ideas out there? Thanks ahead of time. =============================================================================== Philip A. Gross The Computer Solution Co., Inc. Voice: 804-794-3491 ------------------------------------------------------------------------------- INTERNET: pag%tcsc3b2@wb3ffv.ampr.org pag%tcsc3b2@uunet.UU.NET USENET: ...!{ka3ovk,uunet,wb3ffv,xanth}!tcsc3b2!pag UUCP: tcsc3b2!pag (804)794-1514 ATTMAIL: attmail!tcsc3b2!pag ------------------------------------------------------------------------------- The opinions expressed here are strictly mine and nobody elses. << I haven't heard what I have to say about that yet. >> :-)