Fix blocking input

rpi/lcd-screen/main.py

@@ -1,5 +1,6 @@
-#import lcd
-import time
+from grove_rgb_lcd import *
+import sys
+import select
 
 whiteTime = 5 * 60
 blackTime = 5 * 60
@@ -18,21 +19,21 @@ def update_timer(white_total_time, black_total_time):
     black_minutes = compute_minutes(black_total_time)
     black_seconds = compute_seconds(black_total_time)
 
-    print(f"W {white_minutes:02d}:{white_seconds:02d} || B {black_minutes:02d}:{black_seconds:02d}")
-    #lcd.setText(f"W {white_minutes:02d}:{white_seconds:02d} || B {black_minutes:02d}:{black_seconds:02d}")
+    setText(f"W {white_minutes:02d}:{white_seconds:02d} || B {black_minutes:02d}:{black_seconds:02d}")
 
 if __name__ == "__main__":
-
+    setRGB(255, 255, 255)
     while whiteTime > 0 and blackTime > 0:
         currentTime = 0
         if current == "white":
-            current = "black"
             whiteTime -= 1
         else:
-            current = "white"
             blackTime -= 1
 
         update_timer(whiteTime, blackTime)
-        time.sleep(1)
 
-    #lcd.setText("Time up!")
+        rlist, _, _ = select.select([sys.stdin], [], [], 1)
+
+        if rlist:
+            sys.stdin.readline()  # consume Enter
+            current = "black" if current == "white" else "white"