Re:usb host STATE_NO_DEVICE 1GB
Hi "LMI Paul"
Thanks for taking an interest. Once I found out that Sandisk Cruzers work at 1GB (supposedly they adhere to the standard very well) my immediate problem was solved, so this issue has moved back a burner or two.
Regardless, the little adapter that started the thread says "Kingston" on the outside and has a 1GB PNY uSD card inserted. On the backside you can faintly see the markings "FCR-MMR, 30996-001.A00LF", and "060508 5V China".
I dumped the descriptors using USBView on an XP PC:
Device Descriptor:
bcdUSB: 0x0200
bDeviceClass: 0x00
bDeviceSubClass: 0x00
bDeviceProtocol: 0x00
bMaxPacketSize0: 0x40 (64)
idVendor: 0x090C (Feiya Technology Corporation)
idProduct: 0x6200
bcdDevice: 0x0100
iManufacturer: 0x01
0x0409: "Silicon Motion, Inc."
iProduct: 0x02
0x0409: "Generic USB2.0 card "
iSerialNumber: 0x03
0x0409: "12345678901234567890"
bNumConfigurations: 0x01
ConnectionStatus: DeviceConnected
Current Config Value: 0x01
Device Bus Speed: High
Device Address: 0x03
Open Pipes: 2
Endpoint Descriptor:
bEndpointAddress: 0x81 IN
Transfer Type: Bulk
wMaxPacketSize: 0x0200 (512)
bInterval: 0xFF
Endpoint Descriptor:
bEndpointAddress: 0x02 OUT
Transfer Type: Bulk
wMaxPacketSize: 0x0200 (512)
bInterval: 0xFF
Configuration Descriptor:
wTotalLength: 0x0020
bNumInterfaces: 0x01
bConfigurationValue: 0x01
iConfiguration: 0x00
bmAttributes: 0x80 (Bus Powered )
MaxPower: 0xFA (500 mA)
Interface Descriptor:
bInterfaceNumber: 0x00
bAlternateSetting: 0x00
bNumEndpoints: 0x02
bInterfaceClass: 0x08
bInterfaceSubClass: 0x06
bInterfaceProtocol: 0x50
iInterface: 0x00
Endpoint Descriptor:
bEndpointAddress: 0x81 IN
Transfer Type: Bulk
wMaxPacketSize: 0x0200 (512)
bInterval: 0xFF
Endpoint Descriptor:
bEndpointAddress: 0x02 OUT
Transfer Type: Bulk
wMaxPacketSize: 0x0200 (512)
bInterval: 0xFF
Richard
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