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Fix 'out of range' issue, add mode #8

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Fix 'out of range' issue, add mode #8

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20 changes: 14 additions & 6 deletions my_lib/RTC_DS3231.py
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Original file line number Diff line number Diff line change
Expand Up @@ -7,19 +7,19 @@

#class for getting Realtime from the DS3231 in different modes.
class RTC:
w = ["FRI","SAT","SUN","MON","TUE","WED","THU"] #if you want different names for Weekdays, feel free to add.
w = ["SAT","SUN","MON","TUE","WED","THU","FRI"] #if you want different names for Weekdays, feel free to add.
#w = ["Sunday","Monday","Tuesday","Wednesday","Thursday","Friday","Saturday"]

#initialisation of RTC object. Several settings are possible but everything is optional. If you meet this standards no parameter's needed.
def __init__(self, sda_pin=16, scl_pin=17, port=0, speed=100000, address=0x68, register=0x00):
def __init__(self, sda_pin=2, scl_pin=3, port=1, speed=100000, address=0x68, register=0x00):
self.rtc_address = address #for using different i2c address
self.rtc_register = register #for using different register on device. DON'T change for DS3231
sda=machine.Pin(sda_pin) #configure the sda pin
scl=machine.Pin(scl_pin) #configure the scl pin
self.i2c=machine.I2C(port,sda=sda, scl=scl, freq=speed) #configure the i2c interface with given parameters

#function for setting the Time
def DS3231_SetTime(self, NowTime = b'\x00\x23\x12\x28\x14\x07\x21'):
def DS3231_SetTime(self, NowTime = b'\x00\x00\x40\x16\x23\x08\x22'):
# NowTime has to be in format like b'\x00\x23\x12\x28\x14\x07\x21'
# It is encoded like this sec min hour week day month year
# Then it's written to the DS3231
Expand All @@ -31,7 +31,7 @@ def bcd2bin(self, value):

#add a 0 in front of numbers smaler than 10
def pre_zero(self, value):
pre_zero = True #change to False if you don't want a "0" in fron of numbers smaler than 10
pre_zero = True #change to False if you don't want a "0" in front of numbers smaller than 10
if pre_zero:
if value < 10:
value = "0"+str(value) #from now the value is a string!
Expand All @@ -44,8 +44,8 @@ def DS3231_ReadTime(self,mode=0):
year = self.bcd2bin(buffer[6]) + 2000 #the year consists of 2 digits. Here 2000 years are added to get format like "2021"
month = self.bcd2bin(buffer[5]) #just put the month value in the month variable and convert it.
day = self.bcd2bin(buffer[4]) #same for the day value
weekday = self.w[self.bcd2bin(buffer[3])] #weekday will be converted in the weekdays name or shortform like "Sunday" or "SUN"
#weekday = self.bcd2bin(buffer[3]) #remove comment in this line if you want a number for the weekday and comment the line before.
weekday = self.w[(self.bcd2bin(buffer[3])-1)] #weekday will be converted in the weekdays name or shortform like "Sunday" or "SUN"
#weekday = self.bcd2bin(buffer[3])-1 #remove comment in this line if you want a number for the weekday and comment the line before.
hour = self.pre_zero(self.bcd2bin(buffer[2])) #convert bcd to bin and add a "0" if necessary
minute = self.pre_zero(self.bcd2bin(buffer[1])) #convert bcd to bin and add a "0" if necessary
second = self.pre_zero(self.bcd2bin(buffer[0])) #convert bcd to bin and add a "0" if necessary
Expand All @@ -54,6 +54,14 @@ def DS3231_ReadTime(self,mode=0):
if mode == 1: #mode 1 returns a formated string with time, weekday and date
time_string = str(hour) + ":" + str(minute) + ":" + str(second) + " " + weekday + " " + str(day) + "." + str(month) + "." + str(year)
return time_string
if mode == 2: #mode 2 returns a formated string with 12hr time, am/pm, weekday and month.day.year
meridian = "am"
if (hour:= int(hour)) > 12: #12 hr format.
hour -=12
meridian = "pm"
hour = self.pre_zero(hour)
time_string = str(hour) + ":" + str(minute) + ":" + str(second) + " " + meridian + " " + weekday + " " + str(month) + "." + str(day) + "." + str(year)
return time_string
#if you need different format, feel free to add

except Exception as e:
Expand Down