vkataev writes: > Joe Pfeiffer wrote: > > > >My guess is actually that it won't be possible: that the interface to > >the USB controller is high-level enough that it actually isn't > >possible to send an arbitrary bit stream out the port. > > > but I am high-level too, i can do bit-shift and other required > operations to encoding into suitable byte-form
We're using "high-level" in different ways. What I mean by it is that I expect it to give you enough direct control of the hardware. (low-level is sometimes used to mean "close to the hardware" and high-level to mean "farther from the hardware"). For instance, there is simply no way to put out seven "1" bits in a row: at that point, the hardware will insert a "0"; a standard USB device on the other end will be expecting that "0", use it to keep the timing in sync, and silently remove it. USB is quite a complex protocol, and I'm expecting that the controller chip will be adding quite a bit of stuff to the bits you're sending. -- Joseph J. Pfeiffer, Jr., Ph.D. Phone -- (505) 646-1605 Department of Computer Science FAX -- (505) 646-1002 New Mexico State University http://www.cs.nmsu.edu/~pfeiffer ------------------------------------------------------- Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642 _______________________________________________ [email protected] To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-users
