Program AVR board to change LED brightness with button press

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For this lab assignment, you must use the Timers/Counters on the AVR board.

Here are the detailed functions, which will adjust the LED brightness based on the pushbutton:

• The brightness of the LED should increase from the current brightness when the button is pressed (ON)

and decrease when the button is released (OFF)

In the main() loop, when the pushbutton is pressed, generate a PWM waveform to drive the LED so that the

ON time (duty cycle) varies from 0 to 100% in about a second so it is clearly visible and stopping at 100%

(fully ON) until the button is released
When the pushbutton is released, the duty cycle should be reduced, from the brightness at the point when

the button is released until it is completely OFF (0% duty cycle). If the button is released after achieving

100% brightness, the LED should go from Full brightness (100% duty cycle) to 0% duty cycle in about 1

second
Use a timer to generate PWM waveform having a total time cycle (Ton + Toff) of 10 millisecond.

Sample Solution

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