#!/usr/bin/python

tempfile = "/sys/devices/platform/i2c-9191/9191-0290/temp2_input"
pwmfile = "/sys/devices/platform/i2c-9191/9191-0290/pwm2"

minspeed = 120
maxspeed = 185
currspeed = 150

def setspeed():
  global currspeed
  if currspeed > maxspeed:
    currspeed = maxspeed
    return
  if currspeed < minspeed:
    currspeed = minspeed
    return
  print "changing speed to", currspeed
  os.system("echo " + str(currspeed) + " > " + pwmfile)

from time import *
import os

os.system("echo 8 > /sys/devices/platform/i2c-9191/9191-0290/fan2_div")
setspeed()

while True:
  temp = int( open(tempfile).readline())/1000.0
  print temp
  if(temp > 50):
    currspeed += 1
    setspeed()
  if(temp < 45):
    currspeed -= 1
    setspeed()
  if(temp > 60):
    os.system("echo 255 > " + pwmfile)
    
  
  sleep(2)