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udev rules error on BBB

ramanc51

Hi all

             In my BBB i written udev rule 99-usb-serial.rules at /etc/udev/rules.d to fix my usb-serial converter ttyUSB0 name as static(e.g printer), but this rules not create symlink as i given below, alos i saw error that unable to open '/sys/udev/ttyUSB0', is there glue to resolve this error?

 

my 99-usb-serial.rules

 

SUBSYSTEMS=="usb-serial", MODE="0666", ATTR{idVendor}=="0403", ATTR{idProduct}=="6001", SYMLINK+="printer"

 

Error

parse_file: reading '/etc/udev/rules.d/99-usb-serial.rules' as rules file

udev_rules_new: rules use 197880 bytes tokens (16490 * 12 bytes), 32369 bytes buffer

udev_rules_new: temporary index used 60680 bytes (3034 * 20 bytes)

unable to open device '/sys/dev/ttyUSB0'

debian@beaglebone:~$

 

Note:

        But i am able to open this device as /dev/ttyUSB0 only by my another java application on same BBB, but not as a printer

Parents

  • [root@hextek rules.d]# udevadm info -a -n /dev/ttyUSB0

     

    Udevadm info starts with the device specified by the devpath and then

    walks up the chain of parent devices. It prints for every device

    found, all possible attributes in the udev rules key format.

    A rule to match, can be composed by the attributes of the device

    and the attributes from one single parent device.

     

      looking at device '/devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.5/1-1.5.2/1-1.5.2:1.0/ttyUSB0/tty/ttyUSB0':

        KERNEL=="ttyUSB0"

        SUBSYSTEM=="tty"

        DRIVER==""

     

      looking at parent device '/devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.5/1-1.5.2/1-1.5.2:1.0/ttyUSB0':

        KERNELS=="ttyUSB0"

        SUBSYSTEMS=="usb-serial"

        DRIVERS=="pl2303"

        ATTRS{port_number}=="0"

     

      looking at parent device '/devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.5/1-1.5.2/1-1.5.2:1.0':

        KERNELS=="1-1.5.2:1.0"

        SUBSYSTEMS=="usb"

        DRIVERS=="pl2303"

        ATTRS{bInterfaceClass}=="ff"

        ATTRS{bInterfaceSubClass}=="00"

        ATTRS{bInterfaceProtocol}=="00"

        ATTRS{bNumEndpoints}=="03"

        ATTRS{supports_autosuspend}=="1"

        ATTRS{bAlternateSetting}==" 0"

        ATTRS{bInterfaceNumber}=="00"

     

      looking at parent device '/devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.5/1-1.5.2':

        KERNELS=="1-1.5.2"

        SUBSYSTEMS=="usb"

        DRIVERS=="usb"

        ATTRS{bDeviceSubClass}=="00"

        ATTRS{bDeviceProtocol}=="00"

        ATTRS{devpath}=="1.5.2"

        ATTRS{idVendor}=="067b"

        ATTRS{speed}=="12"

        ATTRS{bNumInterfaces}==" 1"

        ATTRS{bConfigurationValue}=="1"

        ATTRS{bMaxPacketSize0}=="64"

        ATTRS{busnum}=="1"

        ATTRS{devnum}=="88"

        ATTRS{configuration}==""

        ATTRS{bMaxPower}=="100mA"

        ATTRS{authorized}=="1"

        ATTRS{bmAttributes}=="a0"

        ATTRS{bNumConfigurations}=="1"

        ATTRS{maxchild}=="0"

        ATTRS{bcdDevice}=="0300"

        ATTRS{avoid_reset_quirk}=="0"

        ATTRS{quirks}=="0x0"

        ATTRS{version}==" 1.10"

        ATTRS{urbnum}=="463"

        ATTRS{ltm_capable}=="no"

        ATTRS{manufacturer}=="Prolific Technology Inc."

        ATTRS{removable}=="unknown"

        ATTRS{idProduct}=="2303"

        ATTRS{bDeviceClass}=="00"

        ATTRS{product}=="USB-Serial Controller"

     

      looking at parent device '/devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.5':

        KERNELS=="1-1.5"

        SUBSYSTEMS=="usb"

        DRIVERS=="usb"

        ATTRS{bDeviceSubClass}=="00"

        ATTRS{bDeviceProtocol}=="00"

        ATTRS{devpath}=="1.5"

        ATTRS{idVendor}=="058f"

        ATTRS{speed}=="12"

        ATTRS{bNumInterfaces}==" 1"

        ATTRS{bConfigurationValue}=="1"

        ATTRS{bMaxPacketSize0}=="8"

        ATTRS{busnum}=="1"

        ATTRS{devnum}=="84"

        ATTRS{configuration}==""

        ATTRS{bMaxPower}=="100mA"

        ATTRS{authorized}=="1"

        ATTRS{bmAttributes}=="e0"

        ATTRS{bNumConfigurations}=="1"

        ATTRS{maxchild}=="4"

        ATTRS{bcdDevice}=="0312"

        ATTRS{avoid_reset_quirk}=="0"

        ATTRS{quirks}=="0x2"

        ATTRS{version}==" 1.10"

        ATTRS{urbnum}=="136"

        ATTRS{ltm_capable}=="no"

        ATTRS{manufacturer}=="ALCOR"

        ATTRS{removable}=="removable"

        ATTRS{idProduct}=="9254"

        ATTRS{bDeviceClass}=="09"

        ATTRS{product}=="Generic USB Hub"

     

      looking at parent device '/devices/pci0000:00/0000:00:1a.0/usb1/1-1':

        KERNELS=="1-1"

        SUBSYSTEMS=="usb"

        DRIVERS=="usb"

        ATTRS{bDeviceSubClass}=="00"

        ATTRS{bDeviceProtocol}=="01"

        ATTRS{devpath}=="1"

        ATTRS{idVendor}=="8087"

        ATTRS{speed}=="480"

        ATTRS{bNumInterfaces}==" 1"

        ATTRS{bConfigurationValue}=="1"

        ATTRS{bMaxPacketSize0}=="64"

        ATTRS{busnum}=="1"

        ATTRS{devnum}=="2"

        ATTRS{configuration}==""

        ATTRS{bMaxPower}=="0mA"

        ATTRS{authorized}=="1"

        ATTRS{bmAttributes}=="e0"

        ATTRS{bNumConfigurations}=="1"

        ATTRS{maxchild}=="6"

        ATTRS{bcdDevice}=="0000"

        ATTRS{avoid_reset_quirk}=="0"

        ATTRS{quirks}=="0x0"

        ATTRS{version}==" 2.00"

        ATTRS{urbnum}=="1932"

        ATTRS{ltm_capable}=="no"

        ATTRS{removable}=="fixed"

        ATTRS{idProduct}=="0020"

        ATTRS{bDeviceClass}=="09"

     

      looking at parent device '/devices/pci0000:00/0000:00:1a.0/usb1':

        KERNELS=="usb1"

        SUBSYSTEMS=="usb"

        DRIVERS=="usb"

        ATTRS{bDeviceSubClass}=="00"

        ATTRS{bDeviceProtocol}=="00"

        ATTRS{devpath}=="0"

        ATTRS{idVendor}=="1d6b"

        ATTRS{speed}=="480"

        ATTRS{bNumInterfaces}==" 1"

        ATTRS{bConfigurationValue}=="1"

        ATTRS{bMaxPacketSize0}=="64"

        ATTRS{authorized_default}=="1"

        ATTRS{busnum}=="1"

        ATTRS{devnum}=="1"

        ATTRS{configuration}==""

        ATTRS{bMaxPower}=="0mA"

        ATTRS{authorized}=="1"

        ATTRS{bmAttributes}=="e0"

        ATTRS{bNumConfigurations}=="1"

        ATTRS{maxchild}=="3"

        ATTRS{bcdDevice}=="0309"

        ATTRS{avoid_reset_quirk}=="0"

        ATTRS{quirks}=="0x0"

        ATTRS{serial}=="0000:00:1a.0"

        ATTRS{version}==" 2.00"

        ATTRS{urbnum}=="267"

        ATTRS{ltm_capable}=="no"

        ATTRS{manufacturer}=="Linux 3.9.10-100.fc17.i686 ehci_hcd"

        ATTRS{removable}=="unknown"

        ATTRS{idProduct}=="0002"

        ATTRS{bDeviceClass}=="09"

        ATTRS{product}=="EHCI Host Controller"

     

      looking at parent device '/devices/pci0000:00/0000:00:1a.0':

        KERNELS=="0000:00:1a.0"

        SUBSYSTEMS=="pci"

        DRIVERS=="ehci-pci"

        ATTRS{irq}=="16"

        ATTRS{subsystem_vendor}=="0x8086"

        ATTRS{broken_parity_status}=="0"

        ATTRS{class}=="0x0c0320"

        ATTRS{companion}==""

        ATTRS{consistent_dma_mask_bits}=="32"

        ATTRS{dma_mask_bits}=="32"

        ATTRS{local_cpus}=="ffffffff"

        ATTRS{device}=="0x3b3c"

        ATTRS{uframe_periodic_max}=="100"

        ATTRS{enable}=="1"

        ATTRS{msi_bus}==""

        ATTRS{local_cpulist}=="0-31"

        ATTRS{vendor}=="0x8086"

        ATTRS{subsystem_device}=="0x0036"

        ATTRS{d3cold_allowed}=="1"

     

      looking at parent device '/devices/pci0000:00':

        KERNELS=="pci0000:00"

        SUBSYSTEMS==""

        DRIVERS==""

    [root@hextek rules.d]#

Reply

  • [root@hextek rules.d]# udevadm info -a -n /dev/ttyUSB0

     

    Udevadm info starts with the device specified by the devpath and then

    walks up the chain of parent devices. It prints for every device

    found, all possible attributes in the udev rules key format.

    A rule to match, can be composed by the attributes of the device

    and the attributes from one single parent device.

     

      looking at device '/devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.5/1-1.5.2/1-1.5.2:1.0/ttyUSB0/tty/ttyUSB0':

        KERNEL=="ttyUSB0"

        SUBSYSTEM=="tty"

        DRIVER==""

     

      looking at parent device '/devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.5/1-1.5.2/1-1.5.2:1.0/ttyUSB0':

        KERNELS=="ttyUSB0"

        SUBSYSTEMS=="usb-serial"

        DRIVERS=="pl2303"

        ATTRS{port_number}=="0"

     

      looking at parent device '/devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.5/1-1.5.2/1-1.5.2:1.0':

        KERNELS=="1-1.5.2:1.0"

        SUBSYSTEMS=="usb"

        DRIVERS=="pl2303"

        ATTRS{bInterfaceClass}=="ff"

        ATTRS{bInterfaceSubClass}=="00"

        ATTRS{bInterfaceProtocol}=="00"

        ATTRS{bNumEndpoints}=="03"

        ATTRS{supports_autosuspend}=="1"

        ATTRS{bAlternateSetting}==" 0"

        ATTRS{bInterfaceNumber}=="00"

     

      looking at parent device '/devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.5/1-1.5.2':

        KERNELS=="1-1.5.2"

        SUBSYSTEMS=="usb"

        DRIVERS=="usb"

        ATTRS{bDeviceSubClass}=="00"

        ATTRS{bDeviceProtocol}=="00"

        ATTRS{devpath}=="1.5.2"

        ATTRS{idVendor}=="067b"

        ATTRS{speed}=="12"

        ATTRS{bNumInterfaces}==" 1"

        ATTRS{bConfigurationValue}=="1"

        ATTRS{bMaxPacketSize0}=="64"

        ATTRS{busnum}=="1"

        ATTRS{devnum}=="88"

        ATTRS{configuration}==""

        ATTRS{bMaxPower}=="100mA"

        ATTRS{authorized}=="1"

        ATTRS{bmAttributes}=="a0"

        ATTRS{bNumConfigurations}=="1"

        ATTRS{maxchild}=="0"

        ATTRS{bcdDevice}=="0300"

        ATTRS{avoid_reset_quirk}=="0"

        ATTRS{quirks}=="0x0"

        ATTRS{version}==" 1.10"

        ATTRS{urbnum}=="463"

        ATTRS{ltm_capable}=="no"

        ATTRS{manufacturer}=="Prolific Technology Inc."

        ATTRS{removable}=="unknown"

        ATTRS{idProduct}=="2303"

        ATTRS{bDeviceClass}=="00"

        ATTRS{product}=="USB-Serial Controller"

     

      looking at parent device '/devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.5':

        KERNELS=="1-1.5"

        SUBSYSTEMS=="usb"

        DRIVERS=="usb"

        ATTRS{bDeviceSubClass}=="00"

        ATTRS{bDeviceProtocol}=="00"

        ATTRS{devpath}=="1.5"

        ATTRS{idVendor}=="058f"

        ATTRS{speed}=="12"

        ATTRS{bNumInterfaces}==" 1"

        ATTRS{bConfigurationValue}=="1"

        ATTRS{bMaxPacketSize0}=="8"

        ATTRS{busnum}=="1"

        ATTRS{devnum}=="84"

        ATTRS{configuration}==""

        ATTRS{bMaxPower}=="100mA"

        ATTRS{authorized}=="1"

        ATTRS{bmAttributes}=="e0"

        ATTRS{bNumConfigurations}=="1"

        ATTRS{maxchild}=="4"

        ATTRS{bcdDevice}=="0312"

        ATTRS{avoid_reset_quirk}=="0"

        ATTRS{quirks}=="0x2"

        ATTRS{version}==" 1.10"

        ATTRS{urbnum}=="136"

        ATTRS{ltm_capable}=="no"

        ATTRS{manufacturer}=="ALCOR"

        ATTRS{removable}=="removable"

        ATTRS{idProduct}=="9254"

        ATTRS{bDeviceClass}=="09"

        ATTRS{product}=="Generic USB Hub"

     

      looking at parent device '/devices/pci0000:00/0000:00:1a.0/usb1/1-1':

        KERNELS=="1-1"

        SUBSYSTEMS=="usb"

        DRIVERS=="usb"

        ATTRS{bDeviceSubClass}=="00"

        ATTRS{bDeviceProtocol}=="01"

        ATTRS{devpath}=="1"

        ATTRS{idVendor}=="8087"

        ATTRS{speed}=="480"

        ATTRS{bNumInterfaces}==" 1"

        ATTRS{bConfigurationValue}=="1"

        ATTRS{bMaxPacketSize0}=="64"

        ATTRS{busnum}=="1"

        ATTRS{devnum}=="2"

        ATTRS{configuration}==""

        ATTRS{bMaxPower}=="0mA"

        ATTRS{authorized}=="1"

        ATTRS{bmAttributes}=="e0"

        ATTRS{bNumConfigurations}=="1"

        ATTRS{maxchild}=="6"

        ATTRS{bcdDevice}=="0000"

        ATTRS{avoid_reset_quirk}=="0"

        ATTRS{quirks}=="0x0"

        ATTRS{version}==" 2.00"

        ATTRS{urbnum}=="1932"

        ATTRS{ltm_capable}=="no"

        ATTRS{removable}=="fixed"

        ATTRS{idProduct}=="0020"

        ATTRS{bDeviceClass}=="09"

     

      looking at parent device '/devices/pci0000:00/0000:00:1a.0/usb1':

        KERNELS=="usb1"

        SUBSYSTEMS=="usb"

        DRIVERS=="usb"

        ATTRS{bDeviceSubClass}=="00"

        ATTRS{bDeviceProtocol}=="00"

        ATTRS{devpath}=="0"

        ATTRS{idVendor}=="1d6b"

        ATTRS{speed}=="480"

        ATTRS{bNumInterfaces}==" 1"

        ATTRS{bConfigurationValue}=="1"

        ATTRS{bMaxPacketSize0}=="64"

        ATTRS{authorized_default}=="1"

        ATTRS{busnum}=="1"

        ATTRS{devnum}=="1"

        ATTRS{configuration}==""

        ATTRS{bMaxPower}=="0mA"

        ATTRS{authorized}=="1"

        ATTRS{bmAttributes}=="e0"

        ATTRS{bNumConfigurations}=="1"

        ATTRS{maxchild}=="3"

        ATTRS{bcdDevice}=="0309"

        ATTRS{avoid_reset_quirk}=="0"

        ATTRS{quirks}=="0x0"

        ATTRS{serial}=="0000:00:1a.0"

        ATTRS{version}==" 2.00"

        ATTRS{urbnum}=="267"

        ATTRS{ltm_capable}=="no"

        ATTRS{manufacturer}=="Linux 3.9.10-100.fc17.i686 ehci_hcd"

        ATTRS{removable}=="unknown"

        ATTRS{idProduct}=="0002"

        ATTRS{bDeviceClass}=="09"

        ATTRS{product}=="EHCI Host Controller"

     

      looking at parent device '/devices/pci0000:00/0000:00:1a.0':

        KERNELS=="0000:00:1a.0"

        SUBSYSTEMS=="pci"

        DRIVERS=="ehci-pci"

        ATTRS{irq}=="16"

        ATTRS{subsystem_vendor}=="0x8086"

        ATTRS{broken_parity_status}=="0"

        ATTRS{class}=="0x0c0320"

        ATTRS{companion}==""

        ATTRS{consistent_dma_mask_bits}=="32"

        ATTRS{dma_mask_bits}=="32"

        ATTRS{local_cpus}=="ffffffff"

        ATTRS{device}=="0x3b3c"

        ATTRS{uframe_periodic_max}=="100"

        ATTRS{enable}=="1"

        ATTRS{msi_bus}==""

        ATTRS{local_cpulist}=="0-31"

        ATTRS{vendor}=="0x8086"

        ATTRS{subsystem_device}=="0x0036"

        ATTRS{d3cold_allowed}=="1"

     

      looking at parent device '/devices/pci0000:00':

        KERNELS=="pci0000:00"

        SUBSYSTEMS==""

        DRIVERS==""

    [root@hextek rules.d]#

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