####### General Description
The project is a simple Pulse Width Modulation (PWM) generator with a variable duty cycle. The duty cycle is controlled
using two buttons: one to increase and another to decrease the duty cycle. The project is designed to operate with a 10
MHz clock as its time base.
####### Button Signals
increase_duty and decrease_duty are signals directly connected to ui_in[0] and ui_in[1], respectively.
####### Debounce Logic
The code includes debounce logic for the buttons. It uses a counter (counter_debounce) to generate a slow clock enable signal
(slow_clk_enable). This slow clock is used to sample the button states and eliminate debounce.
####### PWM Logic
The code utilizes a 4-bit counter (counter_PWM) to generate a PWM signal. The duty cycle of the PWM signal is controlled by the
DUTY_CYCLE variable, which can be increased or decreased using the debounce logic signals (duty_inc and duty_dec).
####### DFF_PWM Module
This is a simple D flip-flop used for debounce. It samples the D input when the en (enable) signal is high.
####### Button Connections
Connect two buttons to the system. These buttons are used to control the duty cycle of the PWM signal.
Connect input pin 0 to one of the buttons. This button is used to increase the duty cycle of the PWM signal. Make sure the button has a pull-down resistor connected to ensure a defined logical level when not pressed.
Connect input pin 1 to the other button. This button is used to decrease the duty cycle of the PWM signal. Just like the first button, ensure that this one also has a pull-down resistor connected.
####### Oscilloscope Connection
Connect an oscilloscope to output pin 0 of the dedicated outputs of the system. Adjust the oscilloscope settings to
measure and display the PWM signal correctly.
| # | Input | Output | Bidirectional |
|---|---|---|---|
| 0 | increase_duty | out_pwm | none |
| 1 | decrease_duty | none | none |
| 2 | none | none | none |
| 3 | none | none | none |
| 4 | none | none | none |
| 5 | none | none | none |
| 6 | none | none | none |
| 7 | none | none | none |