implement clear-display script

clear_display.py

@@ -0,0 +1,12 @@
+"""
+Clears the display of any content.
+"""
+from inkycal import Inkycal
+
+print("loading Inkycal and display driver...")
+inky = Inkycal(render=True)  # Initialise Inkycal
+print("clearing display...")
+inky.calibrate(cycles=1)  # Calibrate the display
+print("clear complete...")
+
+print("finished!")

inkycal/main.py

@@ -532,14 +532,14 @@ class Inkycal:
         image = Image.fromarray(buffer)
         return image
 
-    def calibrate(self):
+    def calibrate(self, cycles=3):
         """Calibrate the E-Paper display
 
         Uses the Display class to calibrate the display with the default of 3
         cycles. After a refresh cycle, a new image is generated and shown.
         """
 
-        self.Display.calibrate()
+        self.Display.calibrate(cycles=cycles)
 
     def _calibration_check(self):
         """Calibration scheduler

inkycal/modules/inky_image.py

@@ -29,7 +29,7 @@ class Inkyimage:
         # give an OK message
         logger.info(f'{__name__} loaded')
 
-    def load(self, path):
+    def load(self, path:str) -> None:
         """loads an image from a URL or filepath.
 
         Args: