#!/usr/bin/python
# DS3231

import smbus
import time
 
address = 0x68
register = 0x00
#           sec  min hour week day month year
NowTime = [0x00,0x53,0x19,0x03,0x19,0x12,0x17]
w  = ["Nedelja","Ponedeljak","Utorak","Sreda","Cetvrtak","Petak","Subota"];
# Get I2C bus
bus = smbus.SMBus(1)
def ds3231SetTime():
    bus.write_i2c_block_data(address,register,NowTime)
 
def ds3231ReadTime():
    return bus.read_i2c_block_data(address,register,19);
 
ds3231SetTime()

t = ds3231ReadTime()
t[0] = t[0]&0x7F  #sec
t[1] = t[1]&0x7F  #min
t[2] = t[2]&0x3F  #hour
t[3] = t[3]&0x07  #week
t[4] = t[4]&0x3F  #day
t[5] = t[5]&0x1F  #month
print("20%x/%x/%x %x:%x:%x  %s" %(t[6],t[5],t[4],t[2],t[1],t[0],w[t[3]-1]))
print("DS3231 Temp= %d.%dC" %(t[17],t[18]))