My Startech device worked on my Windows 7 box, but not on my BBB / Rev C. The Solution: I ran a usb cable from my BBB to a USB hub that has its own power supply, then ran the Startech PL2303 from the hub to my modem. Worked fine. It was apparently a problem of not having enough power to operate correctly.
On Sunday, January 5, 2014 1:07:19 AM UTC-5, loonsailor wrote: > > The Startech device, with the TI chipset, continues to have the same > problem. I've tried a couple of other converters, Keyspan and Trendnet, > both of which use the Prolific chipset, and they do work, making both > /dev/serial devices and /dev/ttyUSB0. It may be fixable with the Startech > converter, but since the other converters work straight out of the box, I'm > just going to use one of them and move on to the next step of making my > system work. > > Thanks for the help, Nuno! > > On Saturday, January 4, 2014 9:48:07 AM UTC-8, Nuno wrote: >> >> On 01/04/2014 10:22 AM, loonsailor wrote: >> > When I sudo, I no longer get an error on the modprobe (duh!), but it >> still >> > doesn't make a device at the /dev level, like /dev/ttyusb0 or similar. >> > Should it? Or should I just have my software, which expects a serial >> > device (it's talking to a weather station) directly access >> > /dev/bus/usb/001/003. If I want a tty-type device, is it enough to 'ln >> -s >> > /dev/bus/... /dev/ttyUSB', either manually or with udev, or does a >> > usb-serial device need some sort of pseudo-driver for serial protocols? >> > >> > Thanks again! >> >> Hi, >> you might want to take a look at 'dmesg' to see if a device is >> created >> when inserting the kernel module. >> This is what I get when connecting a pl2303 based usb-rs232 >> adapter: >> >> - (desktop x86 machine): >> ~$ uname -a >> Linux antec 3.8.0-34-generic #49-Ubuntu SMP Tue Nov 12 18:00:10 UTC 2013 >> x86_64 x86_64 x86_64 GNU/Linux >> >> ~$ lsb_release -a >> LSB Version: >> core-2.0-amd64:core-2.0-noarch:core-3.0-amd64:core-3.0-noarch:core-3.1-amd64:core-3.1-noarch:core-3.2-amd64:core-3.2-noarch:core-4.0-amd64:core-4.0-noarch >> >> >> Distributor ID: Ubuntu >> Description: Ubuntu 13.04 >> >> [83848.138366] usb 2-1.8.6: new full-speed USB device number 8 using >> ehci-pci >> [83848.231040] usb 2-1.8.6: New USB device found, idVendor=067b, >> idProduct=2303 >> [83848.231045] usb 2-1.8.6: New USB device strings: Mfr=1, Product=2, >> SerialNumber=0 >> [83848.231047] usb 2-1.8.6: Product: USB-Serial Controller >> [83848.231050] usb 2-1.8.6: Manufacturer: Prolific Technology Inc. >> [83848.231337] pl2303 2-1.8.6:1.0: pl2303 converter detected >> [83848.232879] usb 2-1.8.6: pl2303 converter now attached to ttyUSB0 >> >> >> - (beaglebone black) >> ~$ uname -a >> Linux bb2 3.8.13-bone28 #1 SMP Fri Sep 13 01:11:14 UTC 2013 armv7l >> armv7l armv7l GNU/Linux >> ~$ lsb_release -a >> No LSB modules are available. >> Distributor ID: Ubuntu >> Description: Ubuntu 13.10 >> >> >> [ 472.737991] usb usb1: usb wakeup-resume >> [ 472.738086] usb usb1: usb auto-resume >> [ 472.738138] hub 1-0:1.0: hub_resume >> [ 472.738259] hub 1-0:1.0: port 1: status 0101 change 0001 >> [ 472.840661] hub 1-0:1.0: state 7 ports 1 chg 0002 evt 0000 >> [ 472.840787] hub 1-0:1.0: port 1, status 0101, change 0000, 12 Mb/s >> [ 472.946041] usb 1-1: new full-speed USB device number 2 using >> musb-hdrc >> [ 473.065944] usb 1-1: default language 0x0409 >> [ 473.066357] usb 1-1: udev 2, busnum 1, minor = 1 >> [ 473.066401] usb 1-1: New USB device found, idVendor=067b, >> idProduct=2303 >> [ 473.066439] usb 1-1: New USB device strings: Mfr=1, Product=2, >> SerialNumber=0 >> [ 473.066473] usb 1-1: Product: USB-Serial Controller >> [ 473.066505] usb 1-1: Manufacturer: Prolific Technology Inc. >> [ 473.071233] usb 1-1: usb_probe_device >> [ 473.071294] usb 1-1: configuration #1 chosen from 1 choice >> [ 473.072221] usb 1-1: adding 1-1:1.0 (config #1, interface 0) >> [ 473.080129] hub 1-0:1.0: state 7 ports 1 chg 0000 evt 0002 >> [ 473.080247] hub 1-0:1.0: port 1 enable change, status 00000103 >> [ 473.175207] usbcore: registered new interface driver usbserial >> [ 473.175427] usbcore: registered new interface driver usbserial_generic >> [ 473.175638] usbserial: USB Serial support registered for generic >> [ 473.193055] usbcore: registered new interface driver pl2303 >> [ 473.193317] usbserial: USB Serial support registered for pl2303 >> [ 473.193446] pl2303 1-1:1.0: usb_probe_interface >> [ 473.193487] pl2303 1-1:1.0: usb_probe_interface - got id >> [ 473.193564] pl2303 1-1:1.0: pl2303 converter detected >> [ 473.206726] usb 1-1: pl2303 converter now attached to ttyUSB0 >> >> >> As you can see, there's a ttyUSB0 device being created. Can you >> show >> what you get from 'dmesg' or /var/log/kern.log ? >> >> Cheers, >> Nuno >> >> -- >> http://aeminium.org/nuno/ >> > -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
