eep

Author: ladyada

examples/seesaw_eeprom_test.py

@@ -0,0 +1,29 @@
+# SPDX-FileCopyrightText: 2021 ladyada for Adafruit Industries
+# SPDX-License-Identifier: MIT
+
+# Simple seesaw test reading and writing the internal EEPROM
+# The ATtiny8xx series has a true 128 byte EEPROM, the SAMD09 mimics it in flash with 64 bytes
+# THE LAST BYTE IS USED FOR I2C ADDRESS CHANGE!
+#
+# See the seesaw Learn Guide for wiring details:
+# https://learn.adafruit.com/adafruit-seesaw-atsamd09-breakout?view=all#circuitpython-wiring-and-test
+
+import time
+import board
+from adafruit_seesaw import seesaw
+
+i2c_bus = board.I2C()
+ss = seesaw.Seesaw(i2c_bus)
+
+val = ss.eeprom_read8(0x02)   # read from address 2
+print("Read 0x%02x from EEPROM address 0x02" % val)
+
+print("Incremening value")
+ss.eeprom_write8(0x02, val + 1)
+
+val = ss.eeprom_read8(0x02)   # read from address 2
+print("Second read 0x%02x from EEPROM address 0x02" % val)
+
+while True:
+    # Do not write EEPROM in a loop, it has 100k cycle life
+    time.sleep(1)