On Thu, 1 Dec 2005, Thomas Kern wrote:
> Hi
>
> I am using Linux Kernel 2.6.10 on an embedded PC104-Board with a Pentium
> MMX. I need to connect a usb-device over a usb-hub to the PC104-Board.
> Should look like this:
> PC104<---->USB-Hub<---->USB-Device
>
> I loaded all the drivers/modules I need, the pl2303 for the Prolific
> Usb-Hub, and the evolution_rcm for the usb-device. And of course before the
> usbcore, usbserial, ohci_hcd.
You don't need pl2303 for a USB hub device. pl2303 is for a
usb-serial converter device. The USB hub driver is always present
when USB is loaded.
> In the "dmesg" (see below) it looks like it load and connect to usb-devices,
> but when I do "lsmod" the modules are not connected to something(See below).
> Now when I try to start my programm written in C, completely working under a
> 2.4.29 kernel, it says that it is not able to open "/dev/usb/ttyUSB0".
Try to open "/dev/ttyUSB0" instead.
However, there may be other problems also, since I don't see the
the serial device being recognized by the USB system hardware.
or exactly what is your "USB-Device" in this case?
E.g., when I plug in a usb-serial device (on 2.6.13++), I see:
usb 2-2: new full speed USB device using uhci_hcd and address 3
usbcore: registered new driver usbserial
drivers/usb/serial/usb-serial.c: USB Serial support registered for Generic
usbcore: registered new driver usbserial_generic
drivers/usb/serial/usb-serial.c: USB Serial Driver core v2.0
drivers/usb/serial/usb-serial.c: USB Serial support registered for Belkin /
Peracom / GoHubs USB Serial Adapter
belkin 2-2:1.0: Belkin / Peracom / GoHubs USB Serial Adapter converter detected
drivers/usb/serial/belkin_sa.c: bcdDevice: 0208, bfc: 0
usb 2-2: Belkin / Peracom / GoHubs USB Serial Adapter converter now attached to
ttyUSB0
> The code of the C-programm:
> filed = open("/dev/usb/ttyUSB0", O_RDWR | O_NOCTTY | O_NDELAY);
>
> The device exist and look like this:
> crw-rw---- 1 root root 188, 0 DATE ttyUSB0
>
> When I connect a usbstorage-stick in the usb-hub, i can connect and look on
> the usbstorage-stick. But I can´t work with the evolution_rcm...
>
> Here is the "lsmod" output:
> ---------------------------
> Module Size Used by Not tainted
> evolution_rcm 16812 0
> pl2303 16132 0
> ftdi_sio 28164 0
> usbserial 23912 3 evolution_rcm,pl2303,ftdi_sio
> sd_mod 11792 0
> usb_storage 26624 0
> scsi_mod 96896 2 sd_mod,usb_storage
> ohci_hcd 26760 0
> usbcore 104056 7
> evolution_rcm,pl2303,ftdi_sio,usbserial,usb_storage,ohci_hcd
> eepro100 24460 0
> mii 4096 1 eepro100
>
>
> Here is the "dmesg" output:
> ---------------------------
> usbcore: registered new driver usbfs
> usbcore: registered new driver hub
> ohci_hcd: 2004 Nov 08 USB 1.1 'Open' Host Controller (OHCI) Driver (PCI)
> ohci_hcd: block sizes: ed 64 td 64
> PCI: Found IRQ 9 for device 0000:00:0f.0
> ohci_hcd 0000:00:0f.0: ALi Corporation USB 1.1 Controller
> ohci_hcd 0000:00:0f.0: USB HC TakeOver from BIOS/SMM
> ohci_hcd 0000:00:0f.0: irq 9, pci mem 0xd0000
> ohci_hcd 0000:00:0f.0: new USB bus registered, assigned bus number 1
> ohci_hcd 0000:00:0f.0: resetting from state 'reset', control = 0x0
> ohci_hcd 0000:00:0f.0: OHCI controller state
> ohci_hcd 0000:00:0f.0: OHCI 1.0, with legacy support registers
> ohci_hcd 0000:00:0f.0: control 0x083 HCFS=operational CBSR=3
> ohci_hcd 0000:00:0f.0: cmdstatus 0x00000 SOC=0
> ohci_hcd 0000:00:0f.0: intrstatus 0x00000044 RHSC SF
> ohci_hcd 0000:00:0f.0: intrenable 0x8000000a MIE RD WDH
> ohci_hcd 0000:00:0f.0: hcca frame #0003
> ohci_hcd 0000:00:0f.0: roothub.a 01000202 POTPGT=1 NPS NDP=2
> ohci_hcd 0000:00:0f.0: roothub.b 00000000 PPCM=0000 DR=0000
> ohci_hcd 0000:00:0f.0: roothub.status 00008000 DRWE
> ohci_hcd 0000:00:0f.0: roothub.portstatus [0] 0x00010101 CSC PPS CCS
> ohci_hcd 0000:00:0f.0: roothub.portstatus [1] 0x00000100 PPS
> usb usb1: new device strings: Mfr=3, Product=2, SerialNumber=1
> usb usb1: default language 0x0409
> usb usb1: Product: ALi Corporation USB 1.1 Controller
> usb usb1: Manufacturer: Linux 2.6.10-org ohci_hcd
> usb usb1: SerialNumber: 0000:00:0f.0
> usb usb1: hotplug
> usb usb1: adding 1-0:1.0 (config #1, interface 0)
> usb 1-0:1.0: hotplug
> hub 1-0:1.0: usb_probe_interface
> hub 1-0:1.0: usb_probe_interface - got id
> hub 1-0:1.0: USB hub found
> hub 1-0:1.0: 2 ports detected
> hub 1-0:1.0: standalone hub
> hub 1-0:1.0: no power switching (usb 1.0)
> hub 1-0:1.0: global over-current protection
> hub 1-0:1.0: power on to power good time: 2ms
> hub 1-0:1.0: local power source is good
> hub 1-0:1.0: no over-current condition exists
> ohci_hcd 0000:00:0f.0: created debug files
> hub 1-0:1.0: state 5 ports 2 chg ffff evt ffff
> ohci_hcd 0000:00:0f.0: GetStatus roothub.portstatus [0] = 0x00010101 CSC PPS
> CCS
> hub 1-0:1.0: port 1, status 0101, change 0001, 12 Mb/s
> hub 1-0:1.0: debounce: port 1: total 100ms stable 100ms status 0x101
> ohci_hcd 0000:00:0f.0: GetStatus roothub.portstatus [0] = 0x00100103 PRSC
> PPS PES CCS
> usb 1-1: new full speed USB device using ohci_hcd and address 2
> SCSI subsystem initialized
> Initializing USB Mass Storage driver...
> ohci_hcd 0000:00:0f.0: GetStatus roothub.portstatus [0] = 0x00100103 PRSC
> PPS PES CCS
> usb 1-1: ep0 maxpacket = 8
> usb 1-1: new device strings: Mfr=1, Product=2, SerialNumber=0
> usb 1-1: default language 0x0409
> usb 1-1: Product: Generic USB Hub
> usb 1-1: Manufacturer: ALCOR
> usb 1-1: hotplug
> usb 1-1: adding 1-1:1.0 (config #1, interface 0)
> usb 1-1:1.0: hotplug
> hub 1-1:1.0: usb_probe_interface
> hub 1-1:1.0: usb_probe_interface - got id
> hub 1-1:1.0: USB hub found
> hub 1-1:1.0: 4 ports detected
> hub 1-1:1.0: standalone hub
> hub 1-1:1.0: ganged power switching
> hub 1-1:1.0: global over-current protection
> hub 1-1:1.0: power on to power good time: 44ms
> hub 1-1:1.0: local power source is good
> hub 1-1:1.0: no over-current condition exists
> hub 1-1:1.0: enabling power on all ports
> hub 1-0:1.0: port 2, status 0100, change 0000, 12 Mb/s
> hub 1-0:1.0: state 5 ports 2 chg fffc evt 0002
> usbcore: registered new driver usb-storage
> USB Mass Storage support registered.
> hub 1-1:1.0: state 5 ports 4 chg ffff evt ffff
> hub 1-1:1.0: port 1, status 0100, change 0000, 12 Mb/s
> hub 1-1:1.0: port 2, status 0100, change 0000, 12 Mb/s
> hub 1-1:1.0: port 3, status 0101, change 0001, 12 Mb/s
> drivers/usb/serial/usb-serial.c: USB Serial support registered for Generic
> hub 1-1:1.0: debounce: port 3: total 100ms stable 100ms status 0x101
> usb 1-1.3: new full speed USB device using ohci_hcd and address 3
> usb 1-1.3: ep0 maxpacket = 8
> usb 1-1.3: skipped 1 descriptor after interface
> usb 1-1.3: new device strings: Mfr=0, Product=0, SerialNumber=0
> usb 1-1.3: hotplug
> usb 1-1.3: adding 1-1.3:1.0 (config #1, interface 0)
> usb 1-1.3:1.0: hotplug
> hub 1-1:1.0: port 4, status 0101, change 0001, 12 Mb/s
> hub 1-1:1.0: debounce: port 4: total 100ms stable 100ms status 0x101
> usb 1-1.4: new full speed USB device using ohci_hcd and address 4
> usb 1-1.4: ep0 maxpacket = 8
> usb 1-1.4: new device strings: Mfr=1, Product=2, SerialNumber=3
> usb 1-1.4: default language 0x0409
> usb 1-1.4: Product: ER1 Control Module v1.0
> usb 1-1.4: Manufacturer: Evolution Robot
> usb 1-1.4: SerialNumber: ER1UNLVF
> usb 1-1.4: hotplug
> usb 1-1.4: adding 1-1.4:1.0 (config #1, interface 0)
> usb 1-1.4:1.0: hotplug
> hub 1-1:1.0: state 5 ports 4 chg fff0 evt 0000
> usbserial_generic 1-1.3:1.0: usb_probe_interface
> usbserial_generic 1-1.3:1.0: usb_probe_interface - got id
> usbserial_generic 1-1.4:1.0: usb_probe_interface
> usbserial_generic 1-1.4:1.0: usb_probe_interface - got id
> usbcore: registered new driver usbserial_generic
> usbcore: registered new driver usbserial
> drivers/usb/serial/usb-serial.c: USB Serial Driver core v2.0
> drivers/usb/serial/usb-serial.c: USB Serial support registered for FTDI SIO
> drivers/usb/serial/usb-serial.c: USB Serial support registered for FTDI
> 8U232AM Compatible
> drivers/usb/serial/usb-serial.c: USB Serial support registered for FTDI
> FT232BM Compatible
> drivers/usb/serial/usb-serial.c: USB Serial support registered for FTDI
> FT2232C Compatible
> drivers/usb/serial/usb-serial.c: USB Serial support registered for USB-UIRT
> Infrared Tranceiver
> drivers/usb/serial/usb-serial.c: USB Serial support registered for
> Home-Electronics TIRA-1 IR Transceiver
> usbcore: registered new driver ftdi_sio
> drivers/usb/serial/ftdi_sio.c: v1.4.1:USB FTDI Serial Converters Driver
> drivers/usb/serial/usb-serial.c: USB Serial support registered for PL-2303
> usbcore: registered new driver pl2303
> drivers/usb/serial/pl2303.c: Prolific PL2303 USB to serial adaptor driver
> v0.12
> drivers/usb/serial/usb-serial.c: USB Serial support registered for Evolution
> 8U232AM Compatible
> drivers/usb/serial/usb-serial.c: USB Serial support registered for Evolution
> FT232BM Compatible
> usbcore: registered new driver evo_sio
> /home/data/Treiber/evolution_rcm-0.0.7/evolution_rcm.c: v1.4.0:USB FTDI
> Serial Converters Driver
>
>
> Can somebody help me with this?
> Because I am not the best in Linux, and I need to learn many things, so give
> me please some tips or hidden hints...
>
> Thanks
> Thomas
--
~Randy
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