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On Thursday 11 October 2007, Jason wrote: |
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> I'm having a small issue with a Gateworks GW2348-4 [1] ixp4xx board. I |
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> attached the RXD, TXD, and GND lines from an FTDI USB serial TTL cable |
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> to the appropriate JTAG pins (RXD, TXD, GND). |
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i'm confused ... JTAG != RS232 ... i dont see how you can hook up a RS232 port |
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to JTAG pins and get a serial console ... |
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> I can see the bootup messages in minicom, both RedBoot and Linux. It |
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> dumps me to a command prompt, but that's it. The errors I see are: |
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> |
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> 1.) CTRL-C to RedBoot yields periods and doesn't stop the boot process. |
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> 2.) what I type echoes back, but hitting Enter goes to the beginning of |
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> the line, and doesn't go down a line. |
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> 3.) no response to any commands eg 'ls<CR>' does not give me a list of |
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> directories... |
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> 4.) I do have Local Echo turned off, so I'm reasonably confident that |
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> the characters I'm seeing are being seen by the board and echoed back. |
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> I tried passing minicom '-7' or '-8' with no improvement. I did get a |
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> chinese character for CTRL-C with '-8' as opposed to a period in RedBoot. |
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> 5.) I managed to catch the 2sec window to telnet into redboot and load |
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> my own kernel and rootfs to ram, and execute, but I get the exact same |
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> effects. |
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> 6.) The exact same cable, minicom, kernel, and rootfs (made with |
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> crossdev/xmerge/xkmake for the OT! criers :-) ) works fine when booted |
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> on an NSLU2... |
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so the board never seems to respond and all your output gets echoed back ? |
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sounds like the hardware wiring isnt correct ... |
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-mike |
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