1  from board import SCL, SDA
 2  from busio import I2C
 3  from adafruit_bus_device.i2c_device import I2CDevice
 4  from adafruit_register.i2c_bit import RWBit
 5  
 6  DEVICE_ADDRESS = 0x68  # device address of DS3231 board
 7  A_DEVICE_REGISTER = 0x0E  # control register on the DS3231 board
 8  
 9  
10  class DeviceControl:  # pylint: disable-msg=too-few-public-methods
11      def __init__(self, i2c):
12          self.i2c_device = i2c  # self.i2c_device required by RWBit class
13  
14      flag1 = RWBit(A_DEVICE_REGISTER, 0)  # bit 0 of the control register
15      flag2 = RWBit(A_DEVICE_REGISTER, 1)  # bit 1
16      flag3 = RWBit(A_DEVICE_REGISTER, 7)  # bit 7
17  
18  
19  # The follow is for I2C communications
20  comm_port = I2C(SCL, SDA)
21  device = I2CDevice(comm_port, DEVICE_ADDRESS)
22  flags = DeviceControl(device)
23  
24  # set the bits in the device
25  flags.flag1 = False
26  flags.flag2 = True
27  flags.flag3 = False
28  # display the device values for the bits
29  print("flag1: {}; flag2: {}; flag3: {}".format(flags.flag1, flags.flag2, flags.flag3))
30  
31  # toggle the bits
32  flags.flag1 = not flags.flag1
33  flags.flag2 = not flags.flag2
34  flags.flag3 = not flags.flag3
35  # display the device values for the bits
36  print("flag1: {}; flag2: {}; flag3: {}".format(flags.flag1, flags.flag2, flags.flag3))