Well, put the message as a Python comment. It will be coloured green. Replace 'code' with 'Python code'. Attract the attention to that word Python. Even upper case it. I don't know... 
How about this post? He uses the python tags for the first two code snippets but when the big one comes it is a plain text.
How about this post? He uses the python tags for the first two code snippets but when the big one comes it is a plain text.
(Apr-05-2017, 04:59 AM)gray Wrote: i want to set time & date by ds1307 IC...I added rtc-ds1307 to /etc/modules my program is
[
from RTC_DS1307 import RTC rtc = RTC() rtc.setDate(seconds = 0, minutes = 47, hours = 9, dow = 3, day = 8, month = 6, year = 16) print ("Date set to:", rtc.getDateStr())][/python]
'setDate' is a function in 'RTC_DS1307.py' that gets value of 'second', 'minute','hour',... and then puts every one of these values in itself register by '_write' function & 'write_byte_data' command i considered a seperate register for 'second','minute',...by defining a hex value for every register. now, my problem is i get the following error..please helpppp
[
Traceback (most recent call last): File "/home/pi/start/time/set-get.py", line 5, in <module> day = 8, month = 6, year = 16) File "/home/pi/start/time/RTC_DS1307.py", line 124, in setDate self._write(self._REG_SECONDS, intToBcd(seconds)) File "/home/pi/start/time/RTC_DS1307.py", line 54, in _write self._bus.write_byte_data(self._addr, register, data) OSError: [Errno 16] Device or resource busy'RTC_DS1307.py' is as following
# RTC_DS1307.py
# Code inspired from GitHub: sorz/DS1307.py
import smbus
def bcdToInt(bcd):
'''
Converts byte interpreted as two digit bcd to integer
(e.g. 88 = b01011000->bcd0101'1000 = 58)
'''
out = 0
for d in (bcd >> 4, bcd):
for p in (1, 2, 4 ,8):
if d & 1:
out += p
d >>= 1
out *= 10
return out // 10
def intToBcd(n):
'''
Converts integer 0..99 to byte interpreted in two digit bcd format.
(e.g. 58 = bcd0101'1000->b01011000 = 88)
'''
bcd = 0
for i in (n // 10, n % 10):
for p in (8, 4, 2, 1):
if i >= p:
bcd += 1
i -= p
bcd <<= 1
return bcd >> 1
class RTC():
_REG_SECONDS = 0x00
_REG_MINUTES = 0x01
_REG_HOURS = 0x02
_REG_DOW = 0x03
_REG_DAY = 0x04
_REG_MONTH = 0x05
_REG_YEAR = 0x06
_REG_CONTROL = 0x07
def __init__(self, type = 1, addr = 0x68):
'''
Creates a Real Time Clock abstraction using given SMBus type and I2C address
@param type: 0 for RPi model A, 1 for higher versions (default: 1)
@param addr: I2C address (default: 0x68)
'''
self._bus = smbus.SMBus(type)
self._addr = addr
def _write(self, register, data):
self._bus.write_byte_data(self._addr, register, data)
def _read(self, data):
returndata = self._bus.read_byte_data(self._addr, data)
return returndata
def getSeconds(self):
'''
Returns current seconds.
@return: seconds of current date/time (0..59)
'''
return bcdToInt(self._read(self._REG_SECONDS))
def getMinutes(self):
'''
Returns current minutes.
@return: minutes of current date/time (0..59)
'''
return bcdToInt(self._read(self._REG_MINUTES))
def getHours(self):
'''
Returns current hours.
@return: hours of current date/time (0..23)
'''
d = self._read(self._REG_HOURS)
if (d == 0x64):
d = 0x40
return bcdToInt(d & 0x3F)
def getDow(self):
'''
Returns current day of week.
@return: day number of current date/time (1..7, 1 for Monday)
'''
return bcdToInt(self._read(self._REG_DOW))
def getDay(self):
'''
Returns current day of month.
@return: day of current date/time (1..31)
'''
return bcdToInt(self._read(self._REG_DAY))
def getMonth(self):
'''
Returns current month.
@return: month of current date/time (1..12)
'''
return bcdToInt(self._read(self._REG_MONTH))
def getYear(self):
'''
Returns current year.
@return: year of current date/time (0..99)
'''
return bcdToInt(self._read(self._REG_YEAR))
def setDate(self, seconds = None, minutes = None, hours = None, dow = None,
day = None, month = None, year = None):
'''
Sets the current date/time.
Range: seconds [0,59], minutes [0,59], hours [0,23],
day_of_week [1,7], day [1-31], month [1-12], year [0-99].
If a parameter is None (default), the current value is unchanged
'''
if seconds is not None:
if seconds < 0 or seconds > 59:
raise ValueError('Seconds is out of range [0,59].')
self._write(self._REG_SECONDS, intToBcd(seconds))
if minutes is not None:
if minutes < 0 or minutes > 59:
raise ValueError('Minutes is out of range [0,59].')
self._write(self._REG_MINUTES, intToBcd(minutes))
if hours is not None:
if hours < 0 or hours > 23:
raise ValueError('Hours is out of range [0,23].')
self._write(self._REG_HOURS, intToBcd(hours))
if year is not None:
if year < 0 or year > 99:
raise ValueError('Years is out of range [0,99].')
self._write(self._REG_YEAR, intToBcd(year))
if month is not None:
if month < 1 or month > 12:
raise ValueError('Month is out of range [1,12].')
self._write(self._REG_MONTH, intToBcd(month))
if day is not None:
if day < 1 or day > 31:
raise ValueError('Day is out of range [1,31].')
self._write(self._REG_DAY, intToBcd(day))
if dow is not None:
if dow < 1 or dow > 7:
raise ValueError('Day Of Week is out of range [1,7].')
self._write(self._REG_DOW, intToBcd(dow))
def getDate(self):
'''
Returns the current date/time.
@return: date/time in a tuple with order
(year, month, day, dow, hours, minutes, seconds)
'''
return (self.getYear(), self.getMonth(), self.getDay(),
self.getDow(), self.getHours(), self.getMinutes(),
self.getSeconds())
def getDateStr(self):
'''
Returns the current date/time.
@return: date/time in a string with format
year-month-day hours:minutes:seconds
'''
return "20%02d-%02d-%02d %02d:%02d:%02d" %(self.getYear(), self.getMonth(), self.getDay(), self.getHours(), self.getMinutes(), self.getSeconds())
]