I don't have a tool handy to find out the bytes that are sent and those that are read, so I'm not going further into that right now. The application writes 512 bytes to offset 25088 on the device, and it then reads 64KB from 45056. So then I used Sysinternals' Process Monitor to see what kind of interaction takes place between the Photoviewer.exe app and the drive, and it seems that it uses the block device as a two-way communication with the microcontroller. Then I used Hexviewer to take a look at all the blocks on the drive, because my second guess was that it would just expose the whole Flash memory as a single big block with a propietary format easier to read from the cheap-o flip-chip microcontroller on the board. I did however found that it sets up a "drive" under Windows, which is a bit dangerous because when I tried to open that Windows asked if I wanted to format it. I think the use of the USB Mass Storage class was pretty clever, as it doesn't require you to install a driver on any modern end-user OS. I got it to work under Windows, and it actually works like a charm. I'm not exactly a Gentoo user, but I wanted to reply to this thread because I found it while googling on the subject. I bought one in a toy shop while on a shopping spree for the holidays. I've got 2 of the paper weights the missus got them as xmas gifts any joy yet with it under linux or windows? "I thought she'd steal my heart, instead she stole my kidney,Īnd now its for sale, on the black market in Sydney" - Better Abrahamĭitto here. I installed the supplied windows software under wine, but it didn't work, the software couldn't find the device. I even tried to mount /dev/sda but that didnt work either. There are no devices under /dev/sda (eg /dev/sda8). So Device 8/1403 appears to be the usb key chain. Sd 5:0:0:0: Attached scsi removable disk sdaīus 003 Device 002: ID 045e:00db Microsoft Corp. SCSI device sda: 4096 512-byte hdwr sectors (2 MB) Type: Direct-Access ANSI SCSI revision: 00 Vendor: SITRONIX Model: MULTIMEDIA Rev: 0.09 Usb-storage: waiting for device to settle before scanning Scsi5 : SCSI emulation for USB Mass Storage devices Usb 3-2: configuration #1 chosen from 1 choice Usb 3-2: new full speed USB device using ohci_hcd and address 8 When I plug in it, dmesg gives me the following: Code: In typical fashion with crappy devices like these, linux is not supported, and it doesn't appear to behave as a typical usb storage device. So my wife got a Royal USB keychain as a gift that displays images on the keychain. Posted: Fri 5:13 am Post subject: sitronix usb keychain Gentoo Forums Forum Index Kernel & Hardware Gentoo Forums :: View topic - sitronix usb keychain
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