Hello everyone! I have question about drivers (If I'm not wrong). I'm interested about how to control devices ? For example, I have mobile phone which can be connected to my PC via USB port. How can I give commands to phone to do something ? for example play song or whatever.. Can you suggest me some books about it or where I can learn that ? or maybe fresh example if nobody knows.. Thank you.

Yes, that would be a driver.

Your phone would have to have an interface for you to be able to make it play a song, which I doubt it does, and if it does, I doubt even more that the interface isn't proprietary. (ie you probably can't use it without a crap load of crap loads of work, if at all.)

Simpler USB stuff may be a good start. Maybe you could write a flash drive driver. Here's an example of USB enumeration(finding out what is connected): http://flatassembler.net/examples/usbenum.zip

Overflowz, it is likely that you've already installed drivers for your mobile phone and these drivers include virtual COM port driver (for using the phone as GPRS modem). If it is true, start here.

Tyler
That code is really huge and hard to understand. Can you give me code in MASM if nobody has written in FASM ?
SFeLi
I don't understand what you mean Maybe first I'll try to write USB driver like Tyler said ? but I need start to understand how devices work ? I have Kingston USB Flash drive and suggest me please how to start (: Thank you.
and 1 more question, if I'll write USB driver, then what it can do ? I don't understand functionality of drivers why they exists.. ))

@Overflowz
well you could start from here :
Driver Development Part 1: Introduction to Drivers -
http://www.codeproject.com/KB/system/driverdev.aspx

or :
Kernel Mode Driver Tut -
http://www.freewebs.com/four-f/

dancho
Wow, second seems interesting! Thank you.
P.S I don't understand C/C++ so.. second one is best way hehe ))