pwmserver

#!/usr/bin/python

import vxi11server
import wiringpi
import logging
import re

OUTPIN = 18 # GPIO numbering


logger = logging.getLogger('pwmserver')
logger.setLevel(logging.DEBUG)
ch = logging.StreamHandler()
ch.setLevel(logging.DEBUG)
logger.addHandler(ch)

pwm_is_running = False

def on_receive(message):
    logger.info("received string: %s", message)
    start_pwm = re.findall(':SOUR.*:PWM ([0-9]+) ([0-9]+)', message)
    global pwm_is_running
    if start_pwm != []:
        if pwm_is_running == False:
            pwm_power = int(start_pwm[0][0])
            pwm_range = int(start_pwm[0][1])
            wiringpi.wiringPiSetupGpio()
            wiringpi.softPwmCreate(OUTPIN,pwm_power,pwm_range)
            pwm_is_running = True
	else:
            logger.warn("pwm already running")
    
    set_power = re.findall(':SOUR.*:POWER ([0-9]+)', message)
    if set_power != []:
        pwm_power = int(set_power[0]) 
        logger.debug("set power to %s", pwm_power)
        wiringpi.softPwmWrite(OUTPIN,pwm_power)


vxi11server.on_receive = on_receive

vxi11server.listen()