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On Fri, 25 Dec 2009 14:10:46 -0600 |
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Dale wrote: |
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|
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> David Relson wrote: |
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> > My mobo has two serial ports. |
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> > |
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> > As reported by hwinfo they are: |
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> > |
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> > Serial Port 0: 0x3f8 |
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> > Serial Port 1: 0x2f8 |
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> > |
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> > After booting the machine, dmesg indicates that tty0 is the console |
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> > with message: |
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> > |
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> > console [tty0] enabled |
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> > |
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> > /dev names a multitude of tty devices, |
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> > i.e. /dev/tty0, /dev/tty1, ... |
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> > |
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> > How do I determine which devices correspond to the serial ports? |
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> > |
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> > Thanks. |
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> > |
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> > David |
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> > |
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> > |
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> |
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> Mine is /dev/ttyS0 and /dev/ttyS1 . I put both devices so you will |
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> notice what is alpha and what is numeric. Also note the S is capitol |
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> as well. |
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> |
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> Dale |
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> |
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> :-) :-) |
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|
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My /dev/tty* didn't include any /dev/ttyS* entries. Searching the web, |
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I learned that "MAKEDEV /dev/ttyS0" and "MAKEDEV /dev/ttyS1" will |
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create the missing entries and that "stty -F /dev/ttyS0 -a" will |
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provide configuration information for the port. |
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|
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My little Serial.cpp class is now successfully writing to the port (as |
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proved by my son running Hyperterminal and receiving the sent |
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characters). However, receiving characters isn't yet working. |
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Neither his hyperterminal nor my sender (with a loopback plug) is |
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receiving. |
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