m. allan noah schrieb: > 2009/2/20 Stefan Below <stefanbelow at gmx.de>: > >> Hello, >> >> i have a nice little pen scanner (C-Pen 10) and i would like to write a >> driver for this device. I have already captured some data with usbsnoop and >> converted it with the perlscript. replaying is working fine. >> My onlz problem is, that i am comming from the java world and i have zero >> experience with C. Nevertheless i will give it a try. I think it should >> quite easy, because the pen scanner has no switches etc. My first question >> is, how can i write the output i received with my generated driver into a >> file? >> > > fopen, fwrite, fclose they have man pages. > > you might also want to write a pnm header to it first, but you can do > that afterwards with a good editor like vim. > >
ok, now i have the raw data in my file, but i still have problems with the header. I have now idea how to determine the width and height... This is the only spec i found: Image resolution: approx. 400 dpi Focal tolerance: 2 mm Reading speed: 15 cm/s Character size: 5-22 pt Field of view: 7,2 x 5,5 mm how can i determine the correct header? >> Here are the log file and the "generated driver" >> > > wow, that does look simple. the only problem i see from sane side is > that it uses multiple interrupt endpoints. the sanei_usb support lib > might need some updates to support that. > > allan >
