from ctypes import c_int, c_ubyte, c_void_p, POINTER, string_at, create_string_buffer, c_char_p, c_int, byref #imports allowing the use of our library
import time
import platform
from datetime import datetime

#platform specific imports:
if (platform.system() == 'Windows'):
	#Windows
	from ctypes import windll, WINFUNCTYPE
	lib = windll.LoadLibrary('TelldusCore.dll') #import our library
else:
	#Linux
	from ctypes import cdll, CFUNCTYPE
	lib = cdll.LoadLibrary('libtelldus-core.so.2') #import our library

TELLSTICK_TEMPERATURE = 1;
TELLSTICK_HUMIDITY = 2;

#function to be called when a sensor event occurs		
def callbackfunction(protocol, model, id, dataType, value, timestamp, callbackId, context):
	
	print "Sensor:", string_at(protocol), string_at(model), "id:", id
	if(dataType == TELLSTICK_TEMPERATURE):
		print "Temperature:", string_at(value), "C,", datetime.fromtimestamp(timestamp)
	elif(dataType == TELLSTICK_HUMIDITY):
		print "Humidity:", string_at(value), "%,", datetime.fromtimestamp(timestamp)
	print ""


if (platform.system() == 'Windows'):
	CMPFUNC = WINFUNCTYPE(c_void_p, POINTER(c_ubyte), POINTER(c_ubyte), c_int, c_int, POINTER(c_ubyte), c_int, c_int, c_void_p) #first is return type
else:
	CMPFUNC = CFUNCTYPE(c_void_p, POINTER(c_ubyte), POINTER(c_ubyte), c_int, c_int, POINTER(c_ubyte), c_int, c_int, c_void_p)

cmp_func = CMPFUNC(callbackfunction)

lib.tdInit()
callbackid = lib.tdRegisterSensorEvent(cmp_func, 0)

print "Waiting for events..."
try:
	while(1):
		time.sleep(0.5) #don't exit
except KeyboardInterrupt:
	print "Exiting"
	lib.tdUnregisterCallback(callbackid)
	lib.tdClose()