971 Simple PWM Module
971 : Simple PWM Module
- Author: Tobi McKellar
- Description: PWM for LED control.
- GitHub repository
- Clock: 0 Hz
How it works
A basic PWM controller. ui[5:0] control the reference. When ui[6] is low, this reference is used to set the PWM duty cycle. when ui[6] is high, functionality changes from manual reference to a triangular reference generated internally. In this mode, ui[5:0] control the frequency of the triangular reference. ui[7] enables pwm output when high. PWM is output on uo[7].
How to test
Set ui[7] to high. Measure the output on uo[7]. FLip the other input switches and see what happens!
External hardware
None, but an LED and resistor would be nice.
IO
| # | Input | Output | Bidirectional |
|---|---|---|---|
| 0 | Manual mode PWM reference control | PWM output | |
| 1 | Manual mode PWM reference control | ||
| 2 | Manual mode PWM reference control | ||
| 3 | Manual mode PWM reference control | ||
| 4 | Manual mode PWM reference control | ||
| 5 | Manual mode PWM reference control | ||
| 6 | Toggle PWM breathe or manual mode | ||
| 7 | Enable PWM output |