$Id: HOWTO.logreading,v 1.1 2002/10/15 13:29:58 poeml Exp $

Alright, Spike has given you a nice log, now what to do with it!

Official primer (must read!):
	http://www.aracnet.com/~seagull/NJB/tools/spike-primer.html

Quick primer:

	CS = Command structure
	C< = Result from device to program

Your log (if you followed my steps from HOWTO.usbtracing) will start with
a few lines like:
	CS        80 06 00 01 00 00 12 00

You can ignore these, these are the USB set up packets, and these are 
handled for you automagically by libusb. 

NOTE: they are worth interpreting if you need to know which configuration and
interface to use with the camera! 

NOTE: the CL20 in digicam mode uses configuration 1 (there is only 1)
NOTE: the CL20 in digicam mode uses interface 1 (there is 0 and 1)
NOTE: CL20 interface 0 is for webcam mode

Look for the line:
		CS        c1 00 00 00 21 05 01 00	
			C<  0000:  00
			    0000:  00

To send this command using libusb:
	char * data = calloc(1, 0x10); // Safe size
	int    result;

	result = usb_control_msg( 0xC1, 0x00, 0x0000, 0x0521, data, 0x01 );
	data[0] will be the 1 byte that was returned by the device.

#TODO continue :-)