[Eradicatore]

Figured I would share this version. Eventually I should put it all on github, with all the png's I've made so far with quotes from Carlin, Lennon, Wilde, Ford, Berra, and others.

I added:
- low batt warning, shows a png at 7% or less and waits for charger insert
- only update from 8am to 5pm
- added logging so I could just be sure of the update timing

#!/usr/bin/python
import time;
import glob;
import random;
import subprocess;

def mainLoop ():
   fo = open("/mnt/us/extensions/quoteRotation/bin/log.txt", "a")
   fo.write("\n=== starting new rotation ===\n");

   # first make sure the screen saver is showing
   state = subprocess.check_output(['lipc-get-prop', 'com.lab126.powerd', 'state']).rstrip();
   while (state == "active"):
      subprocess.call(['lipc-set-prop', 'com.lab126.powerd', 'powerButton', '1']);
      time.sleep(1);
      state = subprocess.check_output(['lipc-get-prop', 'com.lab126.powerd', 'state']);

   last = "";

   while 1 == 1:
      # User wants to stop, so they pressed "wake" button
      state = subprocess.check_output(['lipc-get-prop', 'com.lab126.powerd', 'state']).rstrip();
      if (state ==  "active"):
          # maybe rm .lock file here?
          break;

      # Check if we should show low battery warning
      blevel = int(subprocess.check_output(['lipc-get-prop', 'com.lab126.powerd', 'battLevel']).rstrip());
      if (blevel < 8):
         subprocess.call(['eips','-f','-g','/mnt/us/extensions/quoteRotation/bin/png/lowBatt.png']);
         # Seems dangerous, but wait here for a charging event without a -s timeout.
         subprocess.check_output("lipc-wait-event com.lab126.powerd charging", shell=True)

      # 1 for charging, 0 if not 
      #cstate =  int(subprocess.check_output(['lipc-get-prop', 'com.lab126.powerd', 'isCharging']).rstrip());

      file = random.choice(glob.glob('/mnt/us/extensions/quoteRotation/bin/png/*.png'));
      # should add check for empty list of png's here
      while file == last:
          file = random.choice(glob.glob('/mnt/us/extensions/quoteRotation/bin/png/*.png'));
          
      last = file;
          
      tstring = time.strftime("%H:%M:%S")
      mstring = int(time.strftime("%M")) 
      hstring = int(time.strftime("%H")) #24Hour
                  
      # want to sleep from 5pm to 8am
      if (hstring < 8):
         sleepTimeMin = (60 - mstring) + ((7 - hstring) * 60)
      elif (hstring > 16):
         sleepTimeMin = ((60 - mstring) + ((23 - hstring) * 60)) + (8 * 60)
      else:
         sleepTimeMin = 60
         
      fo.write ("{}: sleep for {} minutes => screensaver path: {}\n".format(tstring,sleepTimeMin,file));
      fo.flush();
                     
      subprocess.call(['eips','-f','-g',file]);
      sleepForMin(sleepTimeMin);
                                                                      

def getCurrTimeInSec ():
   "This function returns current time in seconds"
   return int(subprocess.check_output(['date','+%s']).rstrip())

def sleepForMin (mins):
   "this function will use the RTC to wake back up after so many minutes"
   endTime = str(getCurrTimeInSec() + (mins * 60)); 
   
   # disable/reset current alarm
   subprocess.call("echo 0 > /sys/class/rtc/rtc0/wakealarm", shell=True)
   
   # set new alarm
   subprocess.call("echo {} > /sys/class/rtc/rtc0/wakealarm".format(endTime), shell=True)
   
   alarmContents = (subprocess.check_output(['cat','/sys/class/rtc/rtc0/wakealarm']).rstrip())
   
   if (endTime == alarmContents):
      while getCurrTimeInSec() < int(endTime):
         remainingWait = int(endTime) - getCurrTimeInSec()
         if (remainingWait > 0):
            # wait for device to suspend or to resume - this covers the sleep period during which the
            # time counting does not work reliably
            subprocess.check_output("lipc-wait-event -s {} com.lab126.powerd resuming || true".format(str(remainingWait)), shell=True)
   else:
      print "failed compare"

   # not sure whether this is required
   #subprocess.check_output("lipc-set-prop com.lab126.powerd -i deferSuspend 1", shell=True)
   return

mainLoop()