PWM_DRIVER usage and Testing on Fading

#!/usr/bin/python3

from time import sleep
import signal
import sys

from pwm_driver import Pwm

LED = Pwm(path="/sys/class/pwm/pwmchip0/pwm0/", enabled=False, period=100000, duty_cycle=85000)

Duty = 0
low  = 0.8 # Smallest angle (in ms)
hi   = 2.4 # Largest angle (in ms)
pos  = 1.5 # Current position, about middle ms)
step = 0.4 # Step size to next position

try:
    LED.enabled=True
    while True:
        pos += step    # Take a step
        if(pos > hi or pos < low):
            step *= -1
        Duty = LED.duty_cycle
        Duty = str(pos)
        print('pos = ' + str(pos) + ' duty_cycle = ' + Duty)
        (LED.duty_cycle)
        sleep(0.2)
except KeyboardInterrupt:
    LED.enabled=False
    pass

# Trying to fade a LED
# This is from your (@zmatt) PWM driver written a while back and some code from docs.beagleboard.org