27 lines
927 B
Python
27 lines
927 B
Python
# SPDX-FileCopyrightText: 2021 ladyada for Adafruit Industries
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# SPDX-License-Identifier: MIT
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# Simple seesaw test reading and writing the internal EEPROM
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# The ATtiny8xx series has a true 128 byte EEPROM, the SAMD09 mimics it in flash with 64 bytes
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# THE LAST BYTE IS USED FOR I2C ADDRESS CHANGE!
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import time
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import board
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from adafruit_seesaw import seesaw
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i2c_bus = board.I2C() # uses board.SCL and board.SDA
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# i2c_bus = board.STEMMA_I2C() # For using the built-in STEMMA QT connector on a microcontroller
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ss = seesaw.Seesaw(i2c_bus)
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value = ss.eeprom_read8(0x02) # Read from address 2
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print("Read 0x%02x from EEPROM address 0x02" % value)
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print("Incrementing value")
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ss.eeprom_write8(0x02, (value + 1) % 0xFF)
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value = ss.eeprom_read8(0x02) # Read from address 2
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print("Second read 0x%02x from EEPROM address 0x02" % value)
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while True:
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# Do not write EEPROM in a loop, it has 100k cycle life
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time.sleep(1)
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