Raspberry pi wiringpi2 pwm test

pwmtest.py

import wiringpi2 as wiringpi
import sys
import argparse
import time

parser = argparse.ArgumentParser()
# parser.add_argument('--clock', type=int, default=32)
parser.add_argument('--period', type=int, default=200)
parser.add_argument('--pulsewidth', type=int, default=15)
args = parser.parse_args()

# If using BCM GPIO numbers  
wiringpi.wiringPiSetupGpio()  
wiringpi.softPwmCreate(18, args.pulsewidth, args.period)
# wiringpi.pinMode(18, 2)      # pwm only works on GPIO port 18  
# wiringpi.pwmSetClock(args.clock)
# wiringpi.pwmSetRange(args.period)
# wiringpi.pwmWrite(18, args.pulsewidth) 
time.sleep(5.0)