From mboxrd@z Thu Jan 1 00:00:00 1970 To: "Pergola, Michael" Cc: linuxppc-embedded@lists.linuxppc.org, "Support (E-mail)" Subject: Re: Serial Port problem with 823e on Embedded Planet From: Wolfgang Denk Mime-version: 1.0 Content-type: text/plain; charset=ISO-8859-1 In-reply-to: Your message of "Wed, 27 Jun 2001 13:50:17 EDT." Date: Wed, 27 Jun 2001 20:09:55 +0200 Message-Id: <20010627181000.47164100B1@denx.denx.de> Sender: owner-linuxppc-embedded@lists.linuxppc.org List-Id: Dear Michael, in message you wrote: > > I have an Embedded Planet with a LITE_DW Motorola 823 PPC using a HIOX > interface board. I am trying to debug a program sending out data from > ttyS1 and reading it back in on ttyS2. The latest patch has been applied I guess you are using the SMC ports for the ttyS* ? > I want to be able to send any char over the serial link, so I've resorted to > using "raw" mode. The problem is that if an overrun occurs on the receive > side, there is nothing I can sense to indicate this situation. Has anyone > run into this problem and/or is there a solution to my dilemma? In raw mode you're kind of lost - the SMC's don't have any handshake signals. You could switch to use SCC's instead. We have a modified driver that supports full HW handshake on all SCC's (and you can configure the number and size of I/O buffers to optimize for throughput). Wolfgang Denk -- Software Engineering: Embedded and Realtime Systems, Embedded Linux Phone: (+49)-8142-4596-87 Fax: (+49)-8142-4596-88 Email: wd@denx.de A direct quote from the Boss: "We passed over a lot of good people to get the ones we hired." ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/