Date: Mon, 30 Jun 2008 19:25:23 +1200 From: "Rohit Grover" <rgrover1@gmail.com> To: freebsd-embedded@freebsd.org Subject: having trouble receiving serial data using my USB->serial adaptor Message-ID: <426bed110806300025j5a92080bx59cdb2248c77b8c0@mail.gmail.com>
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Hi, I am having trouble getting my BAFO 810 USB->serial adaptor to work. I have built the uplcom and ucom drivers into the kernel, and my USB->serial adaptor is recognized at boot, as can be inferred from the following lines from /var/run/dmesg.boot: ucom0: <Prolific Technology Inc. USB-Serial Controller, class 0/0, rev 1.10/3.\ 00, addr 2> on uhub3 I am using minicom to drive /dev/cuaU0 at 115200 8N1. If I connect the Tx and Rx lines (pins 2 and 3) of the DB9 connector, I can get echoes of my keystrokes on the minicom terminal. Unfortunately, I am unable to connect to an embedded device which supports serial connections at 115200 8N1. When I plug the serial output connector of my adaptor to a NULL modem and then to the target embedded system, I don't see any serial output from the device on my minicom terminal. This same device communicates correctly with the serial port of my linux desktop with minicom and 115200 8N1. As a further experiment, I manually connected pins 2,3, and 5 of the serial end of my adaptor to pins 3,2, and 5 respectively of the embedded device, but still no luck. What am I missing? regards,
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