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//=============================================================================
// Filename: TIME_LAPSE.C
// Description: Time Lapse Camera Controller
//=============================================================================
// Author: Andrew Kilpatrick
// Company: Invisible Rival Inc.
// Revision: 1.00
// Date: 2003
//=============================================================================
//
// Description:
// The time lapse camera controller interfaces with an old and unwanted digital
// camera. It controls the power switch and shutter release on the camera, and
// can also detect if the camera is on or off.
//
// It uses the following pins on the PIC to control the camera:
//
// RA0 - power control
// RA1 - shutter release
// RA2 - camera power sense
//
// The power control and shutter release pin are normally high, and go low when
// the power or shutter should be controlled. The camera power sense looks for a
// high signal when the power is on. I connected it to an LED on the camera, which
// is on solid when the camera is on.
//
// Power sense is used to make sure that the camera is in the right state. If the
// program tries to turn the camera on, but the camera is already on, it will simply
// turn it off again. The sense pin ensures that the program knows which state the
// camera is in.
//
//
// Hardware:
// - 4MHz crystal
//
//=============================================================================

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