G'day John, On Mon, Sep 22, 2003 at 02:10:34AM -0300, John Coppens wrote: > Hi all. > > I've been bravely trying to guess how the Alaris parallel port webcam is > working, and I wanted to do some testing. After a study of Parport > documents, I have written a small proggie that reads from the ECP port > fine, and even get the manufacturers and other data from the cam. > > I do not seem to find anywhere how to use the parport calls to send (or > receive for that matter) Commands on the ECP bus. I am guessing all > transactions are done in Forward (or Reverse) Data Mode. Does anyone know > how to generate Commands (Fwd and Rev)? Short of writing manually to the > base + 0xA00 addresses? > > Thanks, > John
I'd recommend using libieee1284 for this sort of thing. It nicely encapsulates all the ECP/EPP/BIDIR/etc modes in a mostly-cross-platform way. It is my long-term ambition to add sanei_parport calls which use libieee1284, then finally get the parport backends to be portable and not all do their own crazy thing. See: http://cyberelk.net/tim/libieee1284/index.html Regards, Matthew Duggan.
