#!/usr/bin/python
# OH3NWQ 2017
# example using a character LCD connected to a Raspberry Pi Zero W

import time
from time import gmtime, localtime, strftime
import Adafruit_CharLCD as LCD
import subprocess
import os

# Your wiring is propbably different
# I got D4 and D5 lines crossed so corrected them in code

lcd_rs        = 26
lcd_en        = 19
lcd_d4        = 6
lcd_d5        = 13
lcd_d6        = 5
lcd_d7        = 11
lcd_backlight = 4

lcd_columns = 20
lcd_rows    = 4

# Initialize the LCD using the pins above.
lcd = LCD.Adafruit_CharLCD(lcd_rs, lcd_en, lcd_d4, lcd_d5, lcd_d6, lcd_d7,
                           lcd_columns, lcd_rows, lcd_backlight)

# Print a four line banner
lcd.message('Raspberry Pi Zero W\n      OH3NWQ      \n    Vesa Tervo  \n       2017')

# Show banner for 2 seconds
time.sleep(2)

lcd.clear()
while True:
   nowl = strftime("%Y-%m-%d %H:%M:%S", localtime())
   nowz = strftime("%Z", localtime())
   nowup = subprocess.check_output("uptime | sed s/.*up/up/ | sed s/,\ \ [0-9]\ user.*/\ \ \ \ \ / | sed s/\ \ /\ /", shell=True)
   nowload = subprocess.check_output("uptime | sed s/.*rage:\ //", shell=True)
   lcd.home()
   lcd.message('Time is now ('+nowz+'):\n'+nowl+'\n'+nowup+nowload.rstrip())
   #refresh every 2 seconds
   time.sleep(2)