Gene Heskett wrote:
Greetings;
I'm trying to make an antique computer talk to this linux box via a usb<->serial adaptor and a long USB extension cord
that has a hub kit in the far end of it.
When I plug in the cable to a 7 port extension hub here, dmesg reports:
May 12 14:00:58 coyote kernel: [314986.418050] usb 1-1.3: new full speed USB device using ehci_hcd and address 33
May 12 14:00:58 coyote kernel: [314986.503819] usb 1-1.3: configuration #1 chosen from 1 choice
May 12 14:00:58 coyote kernel: [314986.504986] hub 1-1.3:1.0: USB hub found
May 12 14:00:58 coyote kernel: [314986.509657] hub 1-1.3:1.0: 4 ports detected
May 12 14:00:58 coyote kernel: [314986.818989] usb 1-1.3.4: new full speed USB device using ehci_hcd and address 34
May 12 14:00:58 coyote kernel: [314986.910261] usb 1-1.3.4: configuration #1 chosen from 1 choice
May 12 14:00:58 coyote kernel: [314986.910630] ftdi_sio 1-1.3.4:1.0: FTDI USB Serial Device converter detected
May 12 14:00:58 coyote kernel: [314986.910684] ftdi_sio: Detected FT232RL
May 12 14:00:58 coyote kernel: [314986.910721] usb 1-1.3.4: FTDI USB Serial Device converter now attached to ttyUSB1
And I have sent several very long directory listings up the cable, but
nothing, not a single character is being output to the minicom screen.
I do not know if the minicom utility can reach out into that FT232RL to
tell it what the baud rate is or not, no clue. If minicom can't do that,
then what linux utility can perform this initialization?
Are you sure minicom is talking to /dev/ttyUSB1? Also note that
minicom cannot autobaud...you must manually set the baud rate.
If you're connected to another computer's serial port, it's entirely
possible you need a null modem adapter. Most computers are set up to be
DCE devices and serial communications requires a DCE<-->DTE connection.
A null modem adapter converts from DCE to DTE (and vice versa).
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