charge arg order/kwarg, make busy/reset optional

Author: ladyada

adafruit_epd/epd.py

@@ -41,18 +41,20 @@ class Adafruit_EPD:
     LIGHT = 5
 
     # pylint: disable=too-many-arguments
-    def __init__(self, width, height, rst_pin, dc_pin, busy_pin, srcs_pin, cs_pin, spi):
+    def __init__(self, width, height, spi, cs_pin, dc_pin, sramcs_pin, rst_pin, busy_pin):
         # pylint: enable=too-many-arguments
         self.width = width
         self.height = height
 
-         # Setup reset pin.
+        # Setup reset pin.
         self._rst = rst_pin
-        self._rst.direction = digitalio.Direction.OUTPUT
+        if rst_pin:
+            self._rst.direction = digitalio.Direction.OUTPUT
 
-         # Setup busy pin.
+        # Setup busy pin.
         self._busy = busy_pin
-        self._busy.direction = digitalio.Direction.INPUT
+        if busy_pin:
+            self._busy.direction = digitalio.Direction.INPUT
 
         # Setup dc pin.
         self._dc = dc_pin
@@ -66,7 +68,7 @@ def __init__(self, width, height, rst_pin, dc_pin, busy_pin, srcs_pin, cs_pin, s
 
         self.spi_device = spi
 
-        self.sram = mcp_sram.Adafruit_MCP_SRAM(srcs_pin, spi)
+        self.sram = mcp_sram.Adafruit_MCP_SRAM(sramcs_pin, spi)
 
         if self._rst:
             self._rst.value = False

adafruit_epd/il0373.py

@@ -31,8 +31,8 @@
 from adafruit_epd.epd import Adafruit_EPD
 from adafruit_epd.mcp_sram import Adafruit_MCP_SRAM
 
-IL0373_PANEL_SETTING = const(0x00)
 IL0373_POWER_SETTING = const(0x01)
+IL0373_PANEL_SETTING = const(0x00)
 IL0373_POWER_OFF = const(0x02)
 IL0373_POWER_OFF_SEQUENCE = const(0x03)
 IL0373_POWER_ON = const(0x04)
@@ -59,9 +59,9 @@
 class Adafruit_IL0373(Adafruit_EPD):
     """driver class for Adafruit IL0373 ePaper display breakouts"""
     # pylint: disable=too-many-arguments
-    def __init__(self, width, height, rst_pin, dc_pin, busy_pin, srcs_pin, cs_pin, spi):
-        super(Adafruit_IL0373, self).__init__(width, height, rst_pin, dc_pin, busy_pin,
-                                              srcs_pin, cs_pin, spi)
+    def __init__(self, width, height, spi, *, cs_pin, dc_pin, sramcs_pin, rst_pin, busy_pin):
+        super(Adafruit_IL0373, self).__init__(width, height, spi, cs_pin, dc_pin,
+                                              sramcs_pin, rst_pin, busy_pin)
 
         self.bw_bufsize = int(width * height / 8)
         self.red_bufsize = int(width * height / 8)
@@ -81,8 +81,11 @@ def update(self):
         """update the display"""
         self.command(IL0373_DISPLAY_REFRESH)
 
-        while self._busy.value is False:
-            pass
+        if self._busy:
+            while self._busy.value is False:
+                pass
+        else:
+            time.sleep(15)   # wait 15 seconds
 
         self.command(IL0373_CDI, bytearray([0x17]))
         self.command(IL0373_VCM_DC_SETTING, bytearray([0x00]))
@@ -93,9 +96,11 @@ def power_up(self):
         """power up the display"""
         self.command(IL0373_POWER_ON)
 
-        while self._busy.value is False:
-            pass
-
+        if self._busy:
+            while self._busy.value is False:
+                pass
+        else:
+            time.sleep(3)   # wait a bit
         time.sleep(.2)
 
         self.command(IL0373_PANEL_SETTING, bytearray([0xCF]))
@@ -221,7 +226,6 @@ def draw_pixel(self, x, y, color):
 
     def fill(self, color):
         """fill the screen with the passed color"""
-        print("ffffil")
         red_fill = 0xFF
         black_fill = 0xFF
         if color == Adafruit_EPD.BLACK:

examples/epd_simpletest.py

@@ -16,7 +16,7 @@
 display = Adafruit_IL0373(152, 152, rst, dc, busy, srcs, ecs, spi)
 
 # clear the buffer
-display.clear_buffer()
+display.fill(Adafruit_EPD.WHITE)
 
 r_width = 5
 r_pos = display.height
@@ -25,9 +25,10 @@
 while r_pos > display.height/2:
     if r_pos < display.height - 50:
         color = Adafruit_EPD.RED
-    display.rect(display.width - r_pos, display.height - r_pos,
+    display.rect(display.width - r_pos,
+                 display.height - r_pos,
                  display.width - 2*(display.width - r_pos),
-                 display.height - 2*(display.height - r_pos), color)
+                 display.height - 2*(display.height - r_pos),
+                 color)
     r_pos = r_pos - r_width
-
 display.display()