pslab_rtc_test.py

import serial
import time
import struct
import datetime

Byte = struct.Struct("B")
NONSTANDARD_IO = Byte.pack(14)
DS1307 = Byte.pack(4)

s = serial.Serial(port='/dev/ttyUSB0', baudrate=1000000, timeout=0.1)

TT = datetime.datetime.now()

tenSeconds = '{0:04b}'.format(TT.second // 10)
norSeconds = '{0:04b}'.format(TT.second % 10)
seconds = int(tenSeconds + norSeconds, 2)

tenMinutes = '{0:04b}'.format(TT.minute // 10)
norMinutes = '{0:04b}'.format(TT.minute % 10)
minutes = int(tenMinutes + norMinutes, 2)

tenHours = '{0:02b}'.format(TT.hour // 10)
norHours = '{0:04b}'.format(TT.hour % 10)
hour = int('01' + tenHours + norHours, 2)

day = int('{0:08b}'.format(TT.weekday()), 2)

tenDate = '{0:04b}'.format(TT.day // 10)
norDate = '{0:04b}'.format(TT.day % 10)
date = int(tenDate + norDate, 2)

tenMonth = '{0:04b}'.format(TT.month // 10)
norMonth = '{0:04b}'.format(TT.month % 10)
month = int(tenMonth + norMonth, 2)

year = int(str(TT.year)[2:])
tenYear = '{0:04b}'.format(year // 10)
norYear = '{0:04b}'.format(year % 10)
year = int(tenYear + norYear, 2)

seconds = Byte.pack(seconds)
minutes = Byte.pack(minutes)
hour = Byte.pack(hour)
day = Byte.pack(day)
date = Byte.pack(date)
month = Byte.pack(month)
year = Byte.pack(year)
control = Byte.pack(0)

readTime = True

s.write(NONSTANDARD_IO);
s.write(DS1307);

if (readTime):
	s.write(Byte.pack(0));
	toRead = 7
	nArr = []
	while(1):
		A = list(s.read(1))
		if (A):
			nArr.append(A[0])
			toRead = toRead - 1
			if (toRead == 0):
				break
		time.sleep(0.05)

	ss = '{0:08b}'.format(int(nArr[0]))
	mm = '{0:08b}'.format(int(nArr[1]))
	hh = '{0:08b}'.format(int(nArr[2]))
	dd = '{0:08b}'.format(int(nArr[3]))
	dt = '{0:08b}'.format(int(nArr[4]))
	mo = '{0:08b}'.format(int(nArr[5]))
	ye = '{0:08b}'.format(int(nArr[6]))
	
	second = int(ss[:4], 2) * 10 + int(ss[4:], 2)
	minute = int(mm[:4], 2) * 10 + int(mm[4:], 2)
	hour = int(hh[2:4], 2) * 10 + int(hh[4:], 2)
	day = int(dd[5:], 2)
	date = int(dt[2:4], 2) * 10 + int(dt[4:], 2)
	month = int(mo[3], 2) * 10 + int(mo[4:], 2)
	year = 2000 + int(ye[:4], 2) * 10 + int(ye[4:], 2)
	Week = ['Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday', 'Saturday', 'Sunday']
	currentTime = str(year) + '-'+ str("{:02.0f}".format(month)) + '-' + str("{:02.0f}".format(date)) + ' | ' + str("{:02.0f}".format(hour)) + ':' + str("{:02.0f}".format(minute)) + ':' + str("{:02.0f}".format(second)) + ' -- [' + Week[day] + ']'
	print(currentTime) 
	
else:
	s.write(Byte.pack(1));
	s.write(seconds)
	s.write(minutes)
	s.write(hour)
	s.write(day)
	s.write(date)
	s.write(month)
	s.write(year)
	s.write(control)