Pyboard-specific filesystem synchronization behaviour

diff --git a/python/upload_pyboard_watch.py b/python/upload_pyboard_watch.py
new file mode 100755 (executable)
index 0000000..54dd72e
--- /dev/null
+++ b/python/upload_pyboard_watch.py
@@ -0,0 +1,62 @@
+#!/usr/bin/python3
+# Verified on Ubuntu with dependencies...
+# pip3 install watchdog
+# sudo apt install rsync
+import time
+import subprocess
+from watchdog.observers import Observer
+
+# the rsync command intended to selectively upload from the local repo to a feather m0 express
+command = (
+    'rsync '
+    '--recursive --verbose --progress '
+    '--prune-empty-dirs --inplace --times --archive --whole-file '
+    # prefer unittest.py source code
+    '--exclude="/unittest.mpy" '
+    # don't upload upload https://www.youtube.com/watch?v=iEwW6D0sht0
+    '--exclude="upload_*_watch.py" '
+    # recurse in search
+    '--include="*/" '
+    # filter for python source files and micropython bytecode files
+    '--include="*.py" '
+    '--include="*.mpy" '
+    # exclude everything else
+    '--exclude="*" '
+    # rsync from folder
+    './ '
+    # rsync to folder
+    '/media/cefn/PYBFLASH '
+)
+
+syncing = False
+
+def sync():
+    """Synchronizes from git repo to Feather filesystem"""
+    global syncing
+    syncing = True
+    subprocess.run(command, shell=True)
+    syncing = False
+
+class ChangeEventHandler:
+    """handler for future filesystem events"""
+    def dispatch(self, event):
+        if not syncing:
+            sync()
+
+if __name__ == "__main__":
+    sync()
+    handler=ChangeEventHandler() 
+    
+    # set up filesystem monitoring
+    observer = Observer()
+    observer.schedule(handler, ".", recursive=True)
+    observer.start()
+    
+    # await CTRL+C
+    try:
+        while True:
+            time.sleep(1)
+    except KeyboardInterrupt:
+        observer.stop()
+    # join daemon thread to shutdown interpreter
+    observer.join()