sync with current state

apps/strobo.py

@@ -2,24 +2,33 @@
 
 import os
 import sys
+import time
 
 
 Nx = int(sys.argv[1])
 Ny = int(sys.argv[2])
 
-param = 10
-
+p1 = 20
+p2 = 10
 try:
-    param = int(sys.argv[3])
+    param = sys.argv[3]
+    p = param.split(",")
+    p1 = int(p[0])
+    p2 = int(p[1])
 except:
     pass
 
 buffera = bytearray(b"\x00" * (3 * Nx * Ny))
 bufferb = bytearray(b"\xFF" * (3 * Nx * Ny))
+cnt = 0
 
+os.write(2,b"Usage: Parameter: \"20,10\"\n   -> updates every 20*0.01s, every 10th frame is white") 
 while True:
 
         os.write(1, buffera)
-        time.sleep(param*0.01)
-        os.write(1, bufferb)
-        time.sleep(param*0.01)
+        time.sleep(p1*0.01)
+        if cnt == p2-1:
+            cnt = 0
+            os.write(1, bufferb)
+            time.sleep(p1*0.01)
+        cnt += 1