find . -type f -name '*.mpy' | \
xargs -n1 -I {} sh -c "echo uploading {} ...; ampy --port ${PORT} put {} {}"
cd ../
-done
\ No newline at end of file
+done
+
+# switch to adafruit_blinka source
+cd ../../src
+
+# create adafruit_blinka agnostic package for cross-platform logic
+ampy --port $PORT mkdir --exists-okay adafruit_blinka
+ampy --port $PORT mkdir --exists-okay adafruit_blinka/agnostic
+# upload agnostic.mpy for platform detection
+$MPYCROSS adafruit_blinka/agnostic/__init__.py
+ampy --port $PORT put adafruit_blinka/agnostic/__init__.mpy adafruit_blinka/agnostic/__init__.mpy
+# upload time.mpy for time logic
+$MPYCROSS adafruit_blinka/agnostic/time.py
+ampy --port $PORT put adafruit_blinka/agnostic/time.mpy adafruit_blinka/agnostic/time.mpy