text: '''
  Created on Feb 1, 2019
  Simple Python script to activate LED on SenseHAT
  @author: Shyama Sastha Krishnamoorthy Srinivasan
  '''
  from time import sleep
  from sense_hat import SenseHat
  import threading
  
  class SenseHatLedActivator(threading.Thread):
      '''
      Initializing values to be used in the SensehatLED activation sequence
      Will be used if there are no values set by the actuator
      '''
      enableLed = False
      rateInSec = 1
      rotateDeg = 270
      sh = None
      displayMsg = None
  
      #Sets the activator to perform a specific sequence at a certain rate
      def __init__(self, rotateDeg = 270, rateInSec = 1):
          super(SenseHatLedActivator, self).__init__()
          
          if rateInSec > 0:
              self.rateInSec = rateInSec
          if rotateDeg >= 0:
              self.rotateDeg = rotateDeg
              
          self.sh = SenseHat()
          self.sh.set_rotation(self.rotateDeg)
  
      #Function to run the entire logic for switching LED on the senseHAT module 
      def run(self):
          while True:
              if self.enableLed:
                  if self.displayMsg != None:
                      self.sh.show_message(str(self.displayMsg))
                  else:
                      self.sh.show_letter(str('R'))
                  
                  sleep(self.rateInSec)
                  self.sh.clear()
              sleep(self.rateInSec)
  
      #Function to get time cycle/ intervals
      def getRateInSeconds(self):
          return self.rateInSec
  
      #To set enabler flags
      def setEnableLedFlag(self, enable):
          self.sh.clear()
          self.enableLed = enable
      
      #To display message
      def setDisplayMessage(self, msg):
          self.displayMsg = msg