testSDL_DS3231.py

#!/usr/bin/env python
#
# Test SDL_DS3231
# John C. Shovic, SwitchDoc Labs
# 08/03/2014
#
#

# imports

import sys
import time
import datetime
import random 
import SDL_DS3231

# Main Program

print ""
print "Test SDL_DS3231 Version 1.0 - SwitchDoc Labs"
print ""
print ""
print "Program Started at:"+ time.strftime("%Y-%m-%d %H:%M:%S")
print ""

filename = time.strftime("%Y-%m-%d%H:%M:%SRTCTest") + ".txt"
starttime = datetime.datetime.utcnow()

ds3231 = SDL_DS3231.SDL_DS3231(1, 0x68)
#comment out the next line after the clock has been initialized
ds3231.write_now()

# Main Loop - sleeps 10 seconds, then reads and prints values of all clocks
# Also reads two bytes of EEPROM and writes the next value to the two bytes 

# do the AT24C32 eeprom

print "----------------- "
print "----------------- "
print " Test the AT24C32 EEPROM"
print "----------------- "
print "writing first 10 addresses with random data"
for x in range(0,10):
	value = random.randint(0,255)
	print "address = %i writing value=%i" % (x, value) 	
	ds3231.write_AT24C32_byte(x, value)
print "----------------- "

print "reading first 10 addresses"
for x in range(0,10):
	print "address = %i value = %i" %(x, ds3231.read_AT24C32_byte(x)) 
print "----------------- "
print "----------------- "


while True:




	#
	currenttime = datetime.datetime.utcnow()

	deltatime = currenttime - starttime
 
	print ""
	print "Raspberry Pi=\t" + time.strftime("%Y-%m-%d %H:%M:%S")
	
	print "DS3231=\t\t%s" % ds3231.read_datetime()

	print "DS3231 Temp=", ds3231.getTemp()
	time.sleep(10.0)