On Monday 12 May 2008, Rick Stevens wrote: >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. > Once that was set properly on both ends, and I had the coco trained to send both an lf and a cr, that part is working great Ric. >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). >---------------------------------------------------------------------- >- Rick Stevens, Systems Engineer rps2@xxxxxxxx - >- Hosting Consulting, Inc. - >- - >- Diplomacy: The art of saying "Nice doggy!" until you can find a - >- big enough rock. - >---------------------------------------------------------------------- -- Cheers, Gene "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) Nearly every complex solution to a programming problem that I have looked at carefully has turned out to be wrong. -- Brent Welch -- fedora-list mailing list fedora-list@xxxxxxxxxx To unsubscribe: https://www.redhat.com/mailman/listinfo/fedora-list
