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Full Discussion: Device Names on Android
Operating Systems Linux Android Device Names on Android Post 302866699 by fedora18 on Tuesday 22nd of October 2013 03:10:07 PM
Old 10-22-2013
ya..not pretty.
I am using a serial to USB converter with hardware by Prolific. It is the pl2303 one.
when i call up lsmod on my Linux laptop that runs the application fine I see a module called: usbserial pl2303
when I call up lsmod on the android I don't see it which makes sense.

I am assuming this may be the reason why #lsusb returns seeing the device but /dev/ttyUSB0 doesnt get populated upon attaching the device.

I think my plan of attack is to find out how to get that module on there......thoughts?

---------- Post updated at 03:10 PM ---------- Previous update was at 03:07 PM ----------

Rudy, the system log outputs this when my device gets attached:

Code:
D/ViewRootImpl( 1579): pckname = com.prolific.pl2303hxdsimpletest
I/USB3G   (   92): event { 'add', '/devices/platform/sw-ohci.1/usb3/3-1', 'usb', '', 189, 266 }
I/USB3G   (   92): path : '/sys/devices/platform/sw-ohci.1/usb3/3-1'
I/USB3G   (   92): VID :size 5,vid_path '/sys/devices/platform/sw-ohci.1/usb3/3-1/idVendor',VID  '067b
I/USB3G   (   92): '.
I/USB3G   (   92): PID :size 5,Pid_path '/sys/devices/platform/sw-ohci.1/usb3/3-1/idProduct',PID  '2303
I/USB3G   (   92): '.
I/USB3G   (   92): cmd=/system/bin/usb_modeswitch.sh /system/etc/usb_modeswitch.d/067b_2303 &,
I/ActivityManager(  156): START {act=android.hardware.usb.action.USB_DEVICE_ATTACHED flg=0x10000000 cmp=com.prolific.pl2303hxdsimpletest/.PL2303HXDSimpleTest (has extras)} from pid 156
D/PL2303HXD_APLog( 1579): Enter onStart
D/PL2303HXD_APLog( 1579): Leave onStart
D/PL2303HXD_APLog( 1579): Enter onResume
D/PL2303HXD_APLog( 1579): onResume:android.hardware.usb.action.USB_DEVICE_ATTACHED
D/PL2303HXD_APLog( 1579): New instance : tw.com.prolific.driver.pl2303.PL2303Driver@4107dcc8
I/PL2303HXDDriver( 1579): enumerating
I/USB3G   (   92): excute ret : 0,err:No such file or directory
I/PL2303HXDDriver( 1579): Found device: 0BDA:8179
I/PL2303HXDDriver( 1579): iSupportedDevListCnt: 5
I/PL2303HXDDriver( 1579): Found device: 067B:2303
I/PL2303HXDDriver( 1579): iSupportedDevListCnt: 5
D/PL2303HXDDriver( 1579): cmd:toolbox ls /dev/bus/usb/003/011
V/su-binary( 1905): ----su-----
V/su-binary( 1905): argv[1]=-c
V/su-binary( 1905): argv[2]=chmod 666 /dev/bus/usb/*/*
D/PL2303HXDDriver( 1579): verify: /dev/bus/usb/003/011
D/PL2303HXD_APLog( 1579): onResume:enumerate succeeded!
D/PL2303HXD_APLog( 1579): Leave onResume
D/ViewRootImpl( 1579): pckname = com.prolific.pl2303hxdsimpletest
D/PL2303HXDDriver( 1579): UARTintf index = 0
D/PL2303HXDDriver( 1579): Found UsbInterface[mId=0,mClass=255,mSubclass=0,mProtocol=0,mEndpoints=[Landroid.os.Parcelable;@4108d9f0]
D/PL2303HXDDriver( 1579): claim interface succeeded
I/PL2303HXDDriver( 1579): EP: 0x81
I/PL2303HXDDriver( 1579): EP: 0x02
I/PL2303HXDDriver( 1579): Bulk Endpoint
I/PL2303HXDDriver( 1579): EP: 0x83
I/PL2303HXDDriver( 1579): Bulk Endpoint
I/PL2303HXDDriver( 1579): setPLEndpoints succeeded
D/PL2303HXD_APLog( 1579): Enter onStop
D/PL2303HXD_APLog( 1579): Leave onStop

 

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LEARN ABOUT LINUX

usb-devices

usb-devices(1)							Linux USB Utilities						    usb-devices(1)

NAME

       usb-devices - print USB device details

SYNOPSIS

       usb-devices

DESCRIPTION

       usb-devices is a (bash) shell script that can be used to display details of USB buses in the system and the devices connected to them.

       The  output  of	the  script  is similar to the usb/devices file available either under /proc/bus (if usbfs is mounted), or under /sys/ker-
       nel/debug (if debugfs is mounted there). The script is primairily intended to be used if the file is not available.

       In contrast to the usb/devices file, this script only lists active interfaces (those marked with a "*" in the usb/devices file)	and  their
       endpoints.

       Be advised that there can be differences in the way information is sorted, as well as in the format of the output.

RETURN VALUE

       If sysfs is not mounted, a non-zero exit code is returned.

FILES

       /sys/bus/usb/devices/usb*
	      The part of the sysfs tree the script walks through to assemble the printed information.

       /proc/bus/usb/devices
	      Location where the usb/devices file can normally be found for Linux kernels before 2.6.31, if usbfs is mounted.

       /sys/kernel/debug/usb/devices
	      Location where the usb/devices file can normally be found for Linux kernel 2.6.31 and later, if debugfs is mounted.

SEE ALSO

       lsusb(8), usbview(8).

AUTHORS

       Greg Kroah-Hartman <greg@kroah.com>

       Randy Dunlap <rdunlap@xenotime.net>

       Frans Pop <elendil@planet.nl>

usbutils-001							   23 June 2009 						    usb-devices(1)
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