jc@axiom.maths.uq.oz.au (J Chen) (07/23/90)
Does anybody know what the name of COM1 port is in the "fopen" function in Microsoft C-5.1. I would like to develop a simple communication program by "fopen" function on COM1 port. J. CHEN e-mail address: jc@axiom.maths.uq.oz.au ========================================================================
gordon@osiris.cso.uiuc.edu (John Gordon) (07/23/90)
I'm not sure, but I think the beast you're looking for is stdaux. It
is an automatically-opened file pointer, like stdin & stdout. It is mentioned
on pages 60 - 64 of the MSC 5.1 Runtime Library Reference manual, but it
never says exactly what it is.
Hope this helps.
---
John Gordon
Internet: gordon@osiris.cso.uiuc.edu #include <disclaimer.h>
gordon@cerl.cecer.army.mil #include <clever_saying.h>
GEnie: j.gordon14 brianh@hpcvia.CV.HP.COM (brian_helterline) (07/24/90)
>Does anybody know what the name of COM1 port is in the "fopen" >function in Microsoft C-5.1. I would like to develop a simple >communication program by "fopen" function on COM1 port. > >J. CHEN > >e-mail address: jc@axiom.maths.uq.oz.au > >======================================================================== >---------- I better choice may be to use _bios_serialcom() which allows you to set all the standard RS232 parameters. Of course, the port is not interrupt driven so your program had better set up interrupts or be extremely quick to catch all incoming characters. If you aren't fast enough, all you will get is the last character received. (usually just a LF or something like that) An easier way to use COM1 for communication is to buy a serial COM package that works with MSC. I use one from GreenLeaf Software. It does what I need and I believe it cost ~$200 U.S. GreenLeaf Software Inc. 16479 Dallas Parkway Bent Tree Tower Two, Suite 570 Dallas, TX 75248 Tel (214) 248-2561 Please note that I am not associated with GreenLeaf Software. I am just a satisfied customer. ------------------------------------------------------------------------------- Brian Helterline brianh@hpcvia.cv.HP.COM Hewlett Packard ..!hp-pcd!hpcvia!brianh Corvallis, OR 97330 Warning: error C390 - No saying found. core dump. -------------------------------------------------------------------------------