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import sys
from Pubnub import Pubnub
from Adafruit_PWM_Servo_Driver import PWM
import time
import random
publish_key = len(sys.argv) > 1 and sys.argv[1] or 'demo-36'
subscribe_key = len(sys.argv) > 2 and sys.argv[2] or 'demo-36'
secret_key = len(sys.argv) > 3 and sys.argv[3] or 'demo-36'
cipher_key = len(sys.argv) > 4 and sys.argv[4] or ''
ssl_on = len(sys.argv) > 5 and bool(sys.argv[5]) or False
## -----------------------------------------------------------------------
## Initiate Pubnub State
## -----------------------------------------------------------------------
pubnub = Pubnub(publish_key=publish_key, subscribe_key=subscribe_key,
secret_key=secret_key, cipher_key=cipher_key, ssl_on=ssl_on)
channel = 'futureHouse'
# Asynchronous usage
def callback(message, channel):
print(message)
def error(message):
print("ERROR : " + str(message))
def connect(message):
print("CONNECTED")
def reconnect(message):
print("RECONNECTED")
def disconnect(message):
print("DISCONNECTED")
# http://www.raspberrypi.org/forums/viewtopic.php?f=37&t=32826
# Initialise the PWM device using the default address
pwm = PWM(0x40, debug=False)
ledMin = 150 # Min pulse length out of 4096
ledMax = 600 # Max pulse length out of 4096
def setServoPulse(channel, pulse):
pulseLength = 1000000 # 1,000,000 us per second
pulseLength /= 60 # 60 Hz
print "%d us per period" % pulseLength
pulseLength /= 4096 # 12 bits of resolution
print "%d us per bit" % pulseLength
pulse *= 1000
pulse /= pulseLength
pwm.setPWM(channel, 0, pulse)
pwm.setPWMFreq(60) # Set frequency to 60 Hz
while (True):
for x in range(0,6) :
# Change speed of continuous servo on channel O
pwm.setPWM(x, 0, ledMin)
time.sleep(random.uniform(0.005,0.0001))
pwm.setPWM(x, 0, ledMax)
time.sleep(random.uniform(0.005,0.0001))
pubnub.subscribe(channel, callback=callback, error=callback,
connect=connect, reconnect=reconnect, disconnect=disconnect)
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