Design the software in C for a Intelligent Class room light control. Design the block diagram of the hardware based on KL25Z board.

No need for interface logic. Make necessary assumptions.

INPUTS
Motion Sensor
Override Light Control	Overrides motion sensor
Screen Down switch
Screen Up Switch
Turn ON/OFF projector input

OUTPUTS
Turn all lights ON/OFF
Turn Screen Motor On up direction or reverse direction	Screen motor stops on reaching the limit
Turn Projector power ON

Hints: If there is no motion for 5 minutes, turn all the lights off and the projector off. i.e. you need to check the motion sensor value every 5 minutes.

Assume that a Logic 1 will control the lights, motor rotation etc. The screen will stop when the end is reached. Assume that there is a Delay Library function in C. Make necessary assumptions.

• Design the block diagram of the Hardware, identify the ports etc. No interface logic is needed.
• Design Software in C. Decide on the number of bits in input port and number of bits in Output port
• Select necessary Mask bits to set DDR of Port
• Main program decides the logic
  1. Example:

If Motion sensor = 1, then Turn lights ON.

If there is no motion for 5 minutes, turn lights off

1 bit Turn Lights ON/OFF Motion Sensor Over ride Screen Motor up or down KL25z Screen Down Board Turn Projector ON or Off Screen UP Turn On/OFF Turn Screen Motor off or ON Projector 1 bit Turn Lights ON/OFF Motion Sensor Over ride Screen Motor up or down KL25z Screen Down Board Turn Projector ON or Off Screen UP Turn On/OFF Turn Screen Motor off or ON Projector