From mboxrd@z Thu Jan 1 00:00:00 1970 MIME-Version: 1.0 Message-Id: <38D88437.23494@mta2> Date: Wed, 22 Mar 2000 16:28:39 +0800 (CST) From: "zzh" To: linuxppc-embedded@lists.linuxppc.org Subject: About rs232 on motorola mpc8260 ads board Sender: owner-linuxppc-embedded@lists.linuxppc.org List-Id: Hello,everyone. I'm trying to make the SCC1 drived rs232 port of a motorola mpc8260 ads board work.The manual says it can direct connect to pc com port.But it seems the output from this board is not rs232 voltage.i.e -3 to -12 for logical one,3 to 12 for logical zero,nor is it TTL,it seems that it use 0 for logical 1,5.0v for logical 0,so it is rather annoying. I have to invert the output from 8260 ads,then use a TTL->232 converter to connect with PC, it works when i send char from 8260,but cannot work in the other direction. In addition,for a while,it output 232 signal,but i cannot reproduce it!! Does anyone has experience with this board? Thanks for your advice. davidzhang 3/22/2000 _____________________________________________ 首都在线--中国人的网上家园 http://www.263.net @263.net中国最大的在线邮局 http://freemail.263.net ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/