1  # Basic Example to read and write from AT24MACx02 EEPROM Devices
 2  
 3  # Written by FACTS Engineering
 4  # Copyright (c) 2023 FACTS Engineering, LLC
 5  # Licensed under the MIT license.
 6  
 7  #
 8  
 9  import board
10  import busio
11  import at24mac_eeprom
12  
13  # Create EEPROM Object
14  i2c = busio.I2C(board.ATMAC_SCL, board.ATMAC_SDA)
15  # i2c = busio.I2C(board.SCL, board.SDA) # For external I2C devices
16  eeprom = at24mac_eeprom.AT24MAC(i2c)
17  
18  # Address lines default to 0b100. They can be specified if needed.
19  # eeprom = at24mac_eeprom.AT24MAC(i2c, 0b101)
20  
21  # Print out MAC address and serial number
22  print(eeprom.mac)  # Format for use with Wiznet5k
23  print([hex(val) for val in eeprom.mac])  # Readable format
24  print(eeprom.serial_number)
25  print()
26  
27  # Write and read to address 0 using the device object like an array
28  eeprom[0] = 76
29  print(eeprom[0])
30  print()
31  
32  # Write and read to address 100 using array slices
33  eeprom[100] = [6, 7, 8, 9, 10]
34  print([val for val in eeprom[100:105]])
35  print()
36  
37  while True:
38      pass