From: wong@cs.tu-berlin.de (Wolfgang Jung) Subject: Re: RTS/CTS flow control not working! Date: 7 May 1993 09:44:43 GMT
Savio Lam (lam836@cs.cuhk.hk) wrote:
: Does anyone have problems getting RTS/CTS flow control to work
: under Linux? I've got xc+rz.tar.z from sunsite, which contains a
: modified version of Xcomm 3.0b-1.5 that supports RTS/CTS flow control.
: I've turned it on, but there are a lot of errors when uploading. It
: seems that the RTS/CTS flow control doesn't work at all. This problem
: also occurs with Seyon. Any clue?
There are several things to check.
1.) take a RS232 Tester plug it between line and Modem (if your Modem
won't show a CTS LED (otherwise jump this step.)
2.) if the CTS Line (LED) keeps on all the time, the Modem Setting is certainly
wrong (The MODEM internal settings)
3.) Use a 16550AFN on the PORT, others will generate a lot of Erros due
to loosing data. the IDE Interface normaly won't use DMA so there is a good
chance for Data to arrive before the preivious DATA was fetched by the driver
4.) If the Modem sets the CTS line correct and the line still send DATA
(SD LED) try stty crtscts </dev/ttySX
this will turn on CTS/RTS Flowcontrol.
Gruss
Wolfgang