On Tue, 2005-09-20 at 10:56 -0600, Jim Jensen wrote: > Greetings, > > I'm a retired software developer, somewhat new to Linux--especially > internals. I'm trying to write an application in c++ to operate the new > Meade Instruments Deep Sky Imager (DSI), which is a simple CCD camera > designed for amateur astronomy. > > Of course, Meade supplies an application that runs on Windows but I hope > to create a Linux version and post it on SourceForge, as I have done > with some other software I've written > (http://www.sourceforge.net/projects/kuery) > > I'm primarily an applications guy (running SuSe 9.3/KDE/KDevelop), and > I've hoped there might be a way I can perform raw USB i/o using open, > read, write, close from c++ using a device /dev/usb/ttyUSBxxx. > Specifically, I'm hoping I can avoid having to learn much about the > details of the usb API and use some high-level stuff instead. > > I notice several puzzling things: /proc/bus/usb/devices refers to buses, > ports and addresses, atrs, but /dev/usb/ttyUSBxx has major and minor > device numbers. Is there a correspondence of some kind? If the camera > is on bus02 port02 is there a way I can determine > which /dev/usb/ttyUSBxx to open and perform reads on? > > Can you point me to some (non low-level API) documentation on this > subject? Better yet, to some sample application code? > > Regards, > > Jim Jensen > > Did you check if the usb vendor and product id (in output lsusb -v) is already supported by libgphoto2 (uses libusb) and/or some kernel modules? -- -------- m.vr.gr. Gerard Klaver
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