how do you determine what kind of media has been attached to the system?
I have Ubuntu, and when I inserted an SD-card, it notices that it is in fact an SD card. Same counts for USB sticks.
But how can I determine on low level when a new device is inserted, what kind of type it is?
There seems to be no information to be found on this at all.
edit: just to be more complete: I said it is a Linux environment, but actually it is Android in an Embedded environment. I tagged it Linux because I am indeed trying to check from command line.
The udevadm command is not available, and lsusb -vv shows:
Bus 001 Device 001: ID 1d6b:0002
Bus 001 Device 002: ID 0424:2640
Bus 001 Device 003: ID 0424:4040
Bus 002 Device 001: ID 1d6b:0001
which is very little info.
The lsusb
command lists the USB devices registered in the system.
Try lsusb -vv
for more detailed info. You can use the -s
flag to target specific device.
UPDATE: It depends on the permissions of your account, some details require higher privileges. For example here's the output for my mouse:
Bus 003 Device 003: ID 04f3:0230 Elan Microelectronics Corp.
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 1.10
bDeviceClass 0 (Defined at Interface level)
bDeviceSubClass 0
bDeviceProtocol 0
bMaxPacketSize0 8
idVendor 0x04f3 Elan Microelectronics Corp.
idProduct 0x0230
bcdDevice 24.58
iManufacturer 0
iProduct 2 USB+PS/2 Optical Mouse
iSerial 0
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 34
bNumInterfaces 1
bConfigurationValue 1
iConfiguration 0
bmAttributes 0xa0
(Bus Powered)
Remote Wakeup
MaxPower 100mA
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 1
bInterfaceClass 3 Human Interface Device
bInterfaceSubClass 1 Boot Interface Subclass
bInterfaceProtocol 2 Mouse
iInterface 0
HID Device Descriptor:
bLength 9
bDescriptorType 33
bcdHID 1.11
bCountryCode 0 Not supported
bNumDescriptors 1
bDescriptorType 34 Report
wDescriptorLength 52
Report Descriptors:
** UNAVAILABLE **
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 3
Transfer Type Interrupt
Synch Type None
Usage Type Data
wMaxPacketSize 0x0004 1x 4 bytes
bInterval 10
Device Status: 0x0000