#!/usr/bin/python

from Adafruit_CharLCDPlate import Adafruit_CharLCDPlate
from subprocess import *
from time import sleep, strftime
from datetime import datetime

lcd = Adafruit_CharLCDPlate()

cmd = "ip addr show wlan0 | grep inet | awk '{print $2}' | cut -d/ -f1"

lcd.begin(16,1)

def run_cmd(cmd):
    p = Popen(cmd, shell=True, stdout=PIPE)
    output = p.communicate()[0]
    return output

# Here is a nice function returning the colors you want
def change_color(color):

    if (color == 0):
        return 'lcd.RED'

    elif (color == 1):
        return 'lcd.YELLOW'

    elif (color == 2):
        return 'lcd.GREEN'

    elif (color == 3):
        return 'lcd.TEAL'

    elif (color == 4):
        return 'lcd.BLUE'

    elif (color == 5):
        return 'lcd.VIOLET'

color = 0

while 1:

    # Here I get the current time for the entire loop
    current_time = datetime.now()

    # If we've reach the time HH:MM:00, then the backlight is changed
    if (current_time.strftime('%S') == '00') :
        lcd.backlight(change_color(color))
        color = (color + 1) % 6

    # Otherwise, we just display the time
    lcd.clear()
    ipaddr = run_cmd(cmd)
    lcd.message(current_time.strftime('%b %d %l:%M:%S %p\n'))
    lcd.message('IP %s' % ( ipaddr ) )
    sleep(1)