No, it depends on mgetty. I think that mgetty need hw flow control (RTS/CTS) to monitor the DCD line.
I can rewire (short) the RTS/CTS on each side (modem and 8xx), and connect only DCD. Eli -----Original Message----- From: Steven Scholz [mailto:[EMAIL PROTECTED] Sent: Thursday, July 17, 2003 2:51 PM To: Eli Brin Cc: linuxppc-embedded at lists.linuxppc.org Subject: Re: 8xx SCC's as uart Eli Brin wrote: > Dear Steven, > > I tested linuxppc_2_4_devel-2.4.20-2002_12_04.tar.bz2 snapshot from > Denx ftp. I will get the version you referred me to. > > Regarding the hardware handshake, we will connect an SCC to a modem > chip, and my tests show I need the DCD line from the modem so that > mgetty (in autoppp mode) will detect disconnections. It didn't detect > disconnections without the modem handshake (DCD drop). > > We will try to get it working Tx.Rx only. > So you want to use the modem without hw flow control (RTS/CTS) ? Steven ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
