An attempt to reverse engineer the USB protocol used to control the Vidar Dosimetry Pro scanner, in order to be able to control it directly from the BFD-9000 tool to acquire images.
It seems like the Vidar Scanner operates over USB, but the protocol used is SCSI. Since these scanners have been around for a while, it is very likely they were once SCSI, and then they moved to the USB at a hardware level, and kept the SCSI software, which makes sense.
This is how i collected packet to perform the Vidar Info operation.
- Download drivers from Vidar
- Install on Windows 10 or earlier, or in compatibility mode.
- Install Wireshark and USBpcap.
- Wireshark might require you to copy the USBpcapCMD file into its extcap directory. Follow instructions, they are pretty simple.
- Connect Scanner, turn on, and start the Vidar Info app.
- Start Wireshark, and select the USB interface. Then tool around with Wireshark, until you find how to disable capturing from all devices and selecting the Vidar Scanner only.
- Start capturing packets.
- Start the Vidar Info app.
- Wait until it returns data from the scanner.
The Vidar Scanner has a Vidar Info
C code in vidar_c. Tried to see if it was easier in C, but i don't think it is.