Thanks for the response. After several days of research I have come to the conclusion the answer in no. So thh thing I need to do make things in that area as real time as possible. Tom On Mon, 2005-10-31 at 18:48 -0700, Kevin Brown wrote: > > OK I will repeat my question: Does Linux have a driver flag to toggle > > the RTS signal when there is data in the transmit buffer, similar to > > the Windows mode comX: rts=tg? This is very handy in RS-485 networks. > > All too often the Big system is busy and doesn't disable the > > transmitter soon enough to suit the embedded end. (i.e. its not real > > time.) > > Kenneth's response to your last request: > > "More information is needed. You don't specify what does the > transmission and what kind of access you have to turn rts off. You also > don't specify what "rapidly" means. Fast in the frame of human > consciousness (e.g. 2 seconds), or fast in the realm of what the > computer could do (e.g. milliseconds). > > Since you mention gcc, I'll assume you have a C or C++ program that does > the transmission. If this is incorrect, ignore the remainder of the > reply :) > > The only way you would have access to something like this from inside > the program is through the driver. You may already have opened the > serial device and are using the driver to send the transmission. The > driver should have some provision (I would suspect an ioctl call, but I > haven't used a serial driver this way, so wouldn't know without research). > > There could be many different answers depending on what you have and > where the control is done." > --------------------------------------------------- > PLUG-discuss mailing list - PLUG-discuss@lists.plug.phoenix.az.us > To subscribe, unsubscribe, or to change you mail settings: > http://lists.PLUG.phoenix.az.us/mailman/listinfo/plug-discuss -- Tom Burrell Southwest Microwave --------------------------------------------------- PLUG-discuss mailing list - PLUG-discuss@lists.plug.phoenix.az.us To subscribe, unsubscribe, or to change you mail settings: http://lists.PLUG.phoenix.az.us/mailman/listinfo/plug-discuss