get rid of clear_display/clear_buffer and replace with just fill()

Author: ladyada

adafruit_epd/epd.py

@@ -42,6 +42,7 @@ class Adafruit_EPD:
 
     # pylint: disable=too-many-arguments
     def __init__(self, width, height, rst_pin, dc_pin, busy_pin, srcs_pin, cs_pin, spi):
+        # pylint: enable=too-many-arguments
         self.width = width
         self.height = height
 
@@ -56,22 +57,18 @@ def __init__(self, width, height, rst_pin, dc_pin, busy_pin, srcs_pin, cs_pin, s
         # Setup dc pin.
         self._dc = dc_pin
         self._dc.direction = digitalio.Direction.OUTPUT
+        self._dc.value = False
 
         # Setup cs pin.
         self._cs = cs_pin
         self._cs.direction = digitalio.Direction.OUTPUT
+        self._cs.value = True
 
         self.spi_device = spi
 
         self.sram = mcp_sram.Adafruit_MCP_SRAM(srcs_pin, spi)
-        # pylint: enable=too-many-arguments
-
-    def begin(self, reset=True):
-        """Begin display and reset if desired."""
-        self._cs.value = True
-        self._dc.value = False
 
-        if reset:
+        if self._rst:
             self._rst.value = False
             time.sleep(.1)
             self._rst.value = True

adafruit_epd/il0373.py

@@ -65,8 +65,6 @@ def __init__(self, width, height, rst_pin, dc_pin, busy_pin, srcs_pin, cs_pin, s
 
         self.bw_bufsize = int(width * height / 8)
         self.red_bufsize = int(width * height / 8)
-
-        self.begin()
         # pylint: enable=too-many-arguments
 
     def begin(self, reset=True):
@@ -221,12 +219,14 @@ def draw_pixel(self, x, y, color):
         self.sram.write8(addr, current)
         return
 
-    def clear_buffer(self):
-        """clear the display buffer"""
-        self.sram.erase(0x00, self.bw_bufsize, 0xFF)
-        self.sram.erase(self.bw_bufsize, self.red_bufsize, 0xFF)
-
-    def clear_display(self):
-        """clear the entire display"""
-        self.clear_buffer()
-        self.display()
+    def fill(self, color):
+        """fill the screen with the passed color"""
+        print("ffffil")
+        red_fill = 0xFF
+        black_fill = 0xFF
+        if color == Adafruit_EPD.BLACK:
+            black_fill = 0x00
+        if color == Adafruit_EPD.RED:
+            red_fill = 0x00
+        self.sram.erase(0x00, self.bw_bufsize, black_fill)
+        self.sram.erase(self.bw_bufsize, self.red_bufsize, red_fill)