Good Morning, I'm fully new at those things so I don't have a clue if here is the best place to post such a question. I've an old Canon scanner LiDE something that wasn't working anymore so I took it apart. My idea currently is to be able to control the stepper motor of the scanner using a special USB driver. Among the things I've read so far, I've been able to create a driver. I know that I've to call a usb_control_msg() function and to pass on parameters to the device. (RequestType, Request, Value, Index), I also managed to find out the datasheet of the LM9832 chipset that sleeps in my scanner. On the specs of that chipset, I've information available in that sense: Register Listing: Address Function DDDDDDDD Value (example) 07, Command register, 000, Idle (stops motor) What I don't know is how to convert my "register" 07 into a RequestType, Request and Value/Index. Currently, I've been trying several combinations but I always get a -32 return value. Can someone point me in the right direction, please ? Thanks a lot in advance, Nick -- Nicolas Wälti Software Engineer Linux 2.6.28-15-generic #52-Ubuntu SMP Wed Sep 9 10:48:52 UTC 2009 11:26:04 up 7 days, 15:51, 4 users, load average: 0.04, 0.10, 0.13 You will inherit millions of dollars.
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