AT24C32 Python code

AT24C32_eeprom.py

import smbus
import time
EEPROMbus = smbus.SMBus(1)
Device_Address = 0x50 #note EEPROM address may be 0X56
'''
Check your EEPROM address using: sudo i2cdetect -y 1

  AT24C32 Code
  datasheet: atmel.com/Images/doc0336.pdf
  '''
def set_current_AT24C32_address(EEPROM_Memory_Address):
    a1 = int(EEPROM_Memory_Address/256)
    a0 = int(EEPROM_Memory_Address % 256)

    EEPROMbus.write_i2c_block_data(Device_Address, a1, [a0])
    return;

def read_AT24C32_byte(EEPROM_Memory_Address):

    set_current_AT24C32_address(EEPROM_Memory_Address)
    return EEPROMbus.read_byte(Device_Address);

def write_AT24C32_block(EEPROM_Address, value):
    a1 = int(EEPROM_Address/256)
    a0 = int(EEPROM_Address % 256)

    EEPROMbus.write_i2c_block_data(Device_Address, a1, [a0, value])
    time.sleep(0.20)
    return;

def write_AT24C32_byte(EEPROM_Memory_Address, value):
    EEPROMbus.write_byte_data(Device_Address, EEPROM_Memory_Address, value)
    time.sleep(0.20)
    return;


#example of storing string values into the EEPROM
sString = "Bad Boys Race O 2222ur Young Girls Over Victory Garden Walls Get Started Now"
byteArray = bytearray()
byteArray.extend(sString.encode())

iStartingAddress = 0 #next starting address
iEndingAddress = 0

'''
write

'''
for byteVal in byteArray:
    write_AT24C32_block(iEndingAddress, byteVal)
    iEndingAddress = iEndingAddress + 1

print ("Ending Address, used as starting address of next data: " +  str(iEndingAddress))

'''
read

'''
sString = ""
sTemp = b""
for iX in range(iStartingAddress, iEndingAddress):
    sTemp = bytes([read_AT24C32_byte(iX)]) #note the [ ]
    sString = sString + sTemp.decode('utf-8')
        
print(sString)

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