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import webiopi
webiopi.setDebug()
GPIO = webiopi.GPIO
ICMP_DEVICE = "icmp0"
GAS_PORT = 0
SLEEP = 1
class State(object):
def __init__(self, name, checks, expr, func):
self.name = name
self.checks = checks
self.cur = 0
self.expr = expr
self.func = func
def set(self, duration):
if not self.expr(duration):
self.cur = 0
return
if (self.cur >= self.checks):
return
self.cur += 1
if (self.cur == self.checks):
webiopi.debug("ICMP script - State(%s) triggered" % (self.name))
self.func()
def __str__(self):
return "State(%s) %d/%d" % (self.name, self.cur, self.checks)
online = State('Online', 2, lambda x: x > 0 and x < 300,
lambda: GPIO.digitalWrite(GAS_PORT, GPIO.LOW))
offline = State('Offline', 30, lambda x: not online.expr(x),
lambda: GPIO.digitalWrite(GAS_PORT, GPIO.HIGH))
STATES = [ online, offline ]
def setup():
webiopi.debug("ICMP script - setup")
GPIO.setFunction(GAS_PORT, GPIO.OUT)
GPIO.digitalWrite(GAS_PORT, GPIO.HIGH)
def loop():
icmp0 = webiopi.deviceInstance(ICMP_DEVICE)
if icmp0 is None:
webiopi.sleep(SLEEP)
return
duration = icmp0.getMilliseconds()
webiopi.debug("ICMP script - %s: %dms" % (ICMP_DEVICE, duration))
for s in STATES:
s.set(duration)
webiopi.debug("ICMP script - %s" % (s))
webiopi.sleep(SLEEP)
def destroy():
webiopi.debug("ICMP script - destroy")
GPIO.setFunction(GAS_PORT, GPIO.OUT)
GPIO.digitalWrite(GAS_PORT, GPIO.HIGH)
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