Added debugging and loop

python/server.py

@@ -3,6 +3,7 @@
 from flask import Flask, request
 import threading
 import serial
+import time
 
 app = Flask(__name__)
 
@@ -17,6 +18,8 @@ def update():
   with globals()['lock']:
     globals()['data'] = grid_string
 
+  print("data updated to: " + grid_string)
+
   return grid_string
 
 def prepare_grid(grid):
@@ -35,10 +38,12 @@ def prepare_grid(grid):
 
 def serial_func():
   with serial.Serial('/dev/ttyACM0', 9600, timeout=1) as ser:
-    with globals()['lock']:
-      if globals()['data'] != '':
-        serial.write(bytes(globals()['data'], 'ascii'))
-        globals()['data'] = ''
+    while True:
+      with globals()['lock']:
+        if globals()['data'] != '':
+          serial.write(bytes(globals()['data'], 'ascii'))
+          globals()['data'] = ''
+      time.sleep(0.1)
 
 serial_thread = threading.Thread(target=serial_func)
 serial_thread.start()