added new wait_for_button_press functionality (#234)

duckyinpython.py

@@ -97,6 +97,19 @@ def parseLine(line):
             led.value = False
         else:
             led.value = True
+    elif(line[0:21] == "WAIT_FOR_BUTTON_PRESS"):
+        button_pressed = False
+        # NOTE: we don't use assincio in this case because we want to block code execution
+        while not button_pressed:
+            button1.update()
+
+            button1Pushed = button1.fell
+            button1Released = button1.rose
+            button1Held = not button1.value
+
+            if(button1Pushed):
+                print("Button 1 pushed")
+                button_pressed = True
     else:
         newScriptLine = convertLine(line)
         runScriptLine(newScriptLine)