standardize Clear() function

RaspberryPi_JetsonNano/python/examples/epd_2in7_V2_test.py

@@ -23,7 +23,7 @@ try:
     '''2Gray(Black and white) display'''
     logging.info("init and Clear")
     epd.init()
-    epd.clear()
+    epd.Clear()
     font24 = ImageFont.truetype(os.path.join(picdir, 'Font.ttc'), 24)
     font18 = ImageFont.truetype(os.path.join(picdir, 'Font.ttc'), 18)
     font35 = ImageFont.truetype(os.path.join(picdir, 'Font.ttc'), 35)
@@ -145,7 +145,7 @@ try:
     time.sleep(2)
 
     logging.info("Clear...")
-    epd.clear()
+    epd.Clear()
     logging.info("Goto Sleep...")
     epd.sleep()
         

RaspberryPi_JetsonNano/python/lib/waveshare_epd/epd2in7_V2.py

@@ -324,7 +324,7 @@ class EPD:
                         buf[int((newx + (newy * self.width))/4)] = ((pixels[x, y-3]&0xc0) | (pixels[x, y-2]&0xc0)>>2 | (pixels[x, y-1]&0xc0)>>4 | (pixels[x, y]&0xc0)>>6) 
         return buf
     
-    def clear(self):
+    def Clear(self):
         if(self.width % 8 == 0):
             Width = self.width // 8
         else: