Added EK79686 Support

adafruit_epd/ek79686.py

@@ -0,0 +1,166 @@
+# SPDX-FileCopyrightText: 2018 Dean Miller for Adafruit Industries
+#
+# SPDX-License-Identifier: MIT
+
+"""
+`adafruit_epd.EK79686` - Adafruit EK79686 - ePaper display driver
+====================================================================================
+CircuitPython driver for Adafruit EK79686 display breakouts
+* Author(s): Melissa LeBlanc-Williams
+"""
+
+import time
+from micropython import const
+import adafruit_framebuf
+from adafruit_epd.epd import Adafruit_EPD
+
+try:
+    "Needed for type annotations"
+    import typing  # pylint: disable=unused-import
+    from typing_extensions import Literal
+    from busio import SPI
+    from digitalio import DigitalInOut
+
+except ImportError:
+    pass
+
+__version__ = "0.0.0+auto.0"
+__repo__ = "https://github.com/adafruit/Adafruit_CircuitPython_EPD.git"
+
+_EK79686_PANEL_SETTING = const(0x00)
+_EK79686_POWER_SETTING = const(0x01)
+_EK79686_POWER_OFF = const(0x02)
+_EK79686_POWER_OFF_SEQUENCE = const(0x03)
+_EK79686_POWER_ON = const(0x04)
+_EK79686_POWER_ON_MEASURE = const(0x05)
+_EK79686_BOOSTER_SOFT_START = const(0x06)
+_EK79686_DEEP_SLEEP = const(0x07)
+_EK79686_DTM1 = const(0x10)
+_EK79686_DATA_STOP = const(0x11)
+_EK79686_DISPLAY_REFRESH = const(0x12)
+_EK79686_DTM2 = const(0x13)
+_EK79686_PDTM1 = const(0x14)
+_EK79686_PDTM2 = const(0x15)
+_EK79686_PDRF = const(0x16)
+_EK79686_LUT1 = const(0x20)
+_EK79686_LUTWW = const(0x21)
+_EK79686_LUTBW = const(0x22)
+_EK79686_LUTWB = const(0x23)
+_EK79686_LUTBB = const(0x24)
+_EK79686_PLL = const(0x30)
+_EK79686_CDI = const(0x50)
+_EK79686_RESOLUTION = const(0x61)
+_EK79686_VCM_DC_SETTING = const(0x82)
+
+
+class Adafruit_EK79686(Adafruit_EPD):
+    """driver class for Adafruit EK79686 ePaper display breakouts"""
+
+    # pylint: disable=too-many-arguments
+    def __init__(
+        self,
+        width: int,
+        height: int,
+        spi: SPI,
+        *,
+        cs_pin: DigitalInOut,
+        dc_pin: DigitalInOut,
+        sramcs_pin: DigitalInOut,
+        rst_pin: DigitalInOut,
+        busy_pin: DigitalInOut
+    ) -> None:
+        super().__init__(
+            width, height, spi, cs_pin, dc_pin, sramcs_pin, rst_pin, busy_pin
+        )
+
+        self._buffer1_size = int(width * height / 8)
+        self._buffer2_size = int(width * height / 8)
+
+        if sramcs_pin:
+            self._buffer1 = self.sram.get_view(0)
+            self._buffer2 = self.sram.get_view(self._buffer1_size)
+        else:
+            self._buffer1 = bytearray((width * height) // 8)
+            self._buffer2 = bytearray((width * height) // 8)
+        # since we have *two* framebuffers - one for red and one for black
+        # we dont subclass but manage manually
+        self._framebuf1 = adafruit_framebuf.FrameBuffer(
+            self._buffer1, width, height, buf_format=adafruit_framebuf.MHMSB
+        )
+        self._framebuf2 = adafruit_framebuf.FrameBuffer(
+            self._buffer2, width, height, buf_format=adafruit_framebuf.MHMSB
+        )
+        self.set_black_buffer(0, True)
+        self.set_color_buffer(1, False)
+        self._single_byte_tx = False
+
+    def begin(self, reset: bool = True) -> None:
+        """Begin communication with the display and set basic settings"""
+        if reset:
+            self.hardware_reset()
+
+        self.power_down()
+
+    def busy_wait(self) -> None:
+        """Wait for display to be done with current task, either by polling the
+        busy pin, or pausing"""
+        if self._busy:
+            while not self._busy.value:
+                time.sleep(0.01)
+        else:
+            time.sleep(0.5)
+
+    def power_up(self) -> None:
+        """Power up the display in preparation for writing RAM and updating"""
+        self.hardware_reset()
+        time.sleep(0.2)
+
+        self.command(_EK79686_PANEL_SETTING, bytearray([0x0F]))  # LUT from OTP 176x264
+        self.command(0x4D, bytearray([0xAA]))  # FITI cmd (???)
+        self.command(0x87, bytearray([0x28]))
+        self.command(0x84, bytearray([0x00]))
+        self.command(0x83, bytearray([0x05]))
+        self.command(0xA8, bytearray([0xDF]))
+        self.command(0xA9, bytearray([0x05]))
+        self.command(0xB1, bytearray([0xE8]))
+        self.command(0xAB, bytearray([0xA1]))
+        self.command(0xB9, bytearray([0x10]))
+        self.command(0x88, bytearray([0x80]))
+        self.command(0x90, bytearray([0x02]))
+        self.command(0x86, bytearray([0x15]))
+        self.command(0x91, bytearray([0x8D]))
+        self.command(0xAA, bytearray([0x0F]))
+        self.command(_EK79686_POWER_ON)
+        self.busy_wait()
+
+    def power_down(self) -> None:
+        """Power down the display - required when not actively displaying!"""
+        self.command(_EK79686_POWER_OFF, bytearray([0x17]))
+        self.busy_wait()
+
+        if self._rst:  # Only deep sleep if we can get out of it
+            self.command(_EK79686_DEEP_SLEEP, bytearray([0xA5]))
+
+    def update(self) -> None:
+        """Update the display from internal memory"""
+        self.command(_EK79686_DISPLAY_REFRESH)
+        self.busy_wait()
+        if not self._busy:
+            time.sleep(16)  # wait 16 seconds
+
+    def write_ram(self, index: Literal[0, 1]) -> int:
+        """Send the one byte command for starting the RAM write process. Returns
+        the byte read at the same time over SPI. index is the RAM buffer, can be
+        0 or 1 for tri-color displays."""
+        if index == 0:
+            return self.command(_EK79686_DTM1, end=False)
+        if index == 1:
+            return self.command(_EK79686_DTM2, end=False)
+        raise RuntimeError("RAM index must be 0 or 1")
+
+    def set_ram_address(
+        self, x: int, y: int
+    ) -> None:  # pylint: disable=unused-argument, no-self-use
+        """Set the RAM address location, not used on this chipset but required by
+        the superclass"""
+        return  # on this chip it does nothing

examples/epd_bitmap.py

@@ -13,6 +13,7 @@
 from adafruit_epd.ssd1680 import Adafruit_SSD1680  # pylint: disable=unused-import
 from adafruit_epd.ssd1681 import Adafruit_SSD1681  # pylint: disable=unused-import
 from adafruit_epd.uc8151d import Adafruit_UC8151D  # pylint: disable=unused-import
+from adafruit_epd.ek79686 import Adafruit_EK79686  # pylint: disable=unused-import
 
 
 # create the spi device and pins we will need
@@ -30,6 +31,7 @@
 # display = Adafruit_SSD1680(122, 250,        # 2.13" HD Tri-color display
 # display = Adafruit_SSD1681(200, 200,        # 1.54" HD Tri-color display
 # display = Adafruit_IL91874(176, 264,        # 2.7" Tri-color display
+# display = Adafruit_EK79686(176, 264,        # 2.7" Tri-color display
 # display = Adafruit_IL0373(152, 152,         # 1.54" Tri-color display
 # display = Adafruit_UC8151D(128, 296,        # 2.9" mono flexible display
 # display = Adafruit_IL0373(128, 296,         # 2.9" Tri-color display

examples/epd_blinka.py

@@ -18,6 +18,7 @@
 from adafruit_epd.ssd1680 import Adafruit_SSD1680  # pylint: disable=unused-import
 from adafruit_epd.ssd1681 import Adafruit_SSD1681  # pylint: disable=unused-import
 from adafruit_epd.uc8151d import Adafruit_UC8151D  # pylint: disable=unused-import
+from adafruit_epd.ek79686 import Adafruit_EK79686  # pylint: disable=unused-import
 
 # create the spi device and pins we will need
 spi = busio.SPI(board.SCK, MOSI=board.MOSI, MISO=board.MISO)
@@ -38,6 +39,7 @@
 # display = Adafruit_SSD1681(200, 200,        # 1.54" HD Tri-color display
 # display = Adafruit_SSD1675(122, 250,        # 2.13" HD mono display
 # display = Adafruit_IL91874(176, 264,        # 2.7" Tri-color display
+# display = Adafruit_EK79686(176, 264,        # 2.7" Tri-color display
 # display = Adafruit_IL0373(152, 152,         # 1.54" Tri-color display
 # display = Adafruit_UC8151D(128, 296,        # 2.9" mono flexible display
 # display = Adafruit_IL0373(128, 296,         # 2.9" Tri-color display

examples/epd_pillow_demo.py

@@ -18,6 +18,7 @@
 from adafruit_epd.ssd1680 import Adafruit_SSD1680  # pylint: disable=unused-import
 from adafruit_epd.ssd1681 import Adafruit_SSD1681  # pylint: disable=unused-import
 from adafruit_epd.uc8151d import Adafruit_UC8151D  # pylint: disable=unused-import
+from adafruit_epd.ek79686 import Adafruit_EK79686  # pylint: disable=unused-import
 
 # First define some color constants
 WHITE = (0xFF, 0xFF, 0xFF)
@@ -45,6 +46,7 @@
 # display = Adafruit_SSD1680(122, 250,        # 2.13" HD Tri-color or mono display
 # display = Adafruit_SSD1681(200, 200,        # 1.54" HD Tri-color display
 # display = Adafruit_IL91874(176, 264,        # 2.7" Tri-color display
+# display = Adafruit_EK79686(176, 264,        # 2.7" Tri-color display
 # display = Adafruit_IL0373(152, 152,         # 1.54" Tri-color display
 # display = Adafruit_UC8151D(128, 296,        # 2.9" mono flexible display
 # display = Adafruit_IL0373(128, 296,         # 2.9" Tri-color display

examples/epd_pillow_image.py

@@ -20,6 +20,7 @@
 from adafruit_epd.ssd1680 import Adafruit_SSD1680  # pylint: disable=unused-import
 from adafruit_epd.ssd1681 import Adafruit_SSD1681  # pylint: disable=unused-import
 from adafruit_epd.uc8151d import Adafruit_UC8151D  # pylint: disable=unused-import
+from adafruit_epd.ek79686 import Adafruit_EK79686  # pylint: disable=unused-import
 
 
 # create the spi device and pins we will need
@@ -36,6 +37,7 @@
 # display = Adafruit_SSD1680(122, 250,        # 2.13" HD Tri-color or mono display
 # display = Adafruit_SSD1681(200, 200,        # 1.54" HD Tri-color display
 # display = Adafruit_IL91874(176, 264,        # 2.7" Tri-color display
+# display = Adafruit_EK79686(176, 264,        # 2.7" Tri-color display
 # display = Adafruit_IL0373(152, 152,         # 1.54" Tri-color display
 # display = Adafruit_UC8151D(128, 296,        # 2.9" mono flexible display
 # display = Adafruit_IL0373(128, 296,         # 2.9" Tri-color display

examples/epd_simpletest.py

@@ -13,6 +13,7 @@
 from adafruit_epd.ssd1680 import Adafruit_SSD1680  # pylint: disable=unused-import
 from adafruit_epd.ssd1681 import Adafruit_SSD1681  # pylint: disable=unused-import
 from adafruit_epd.uc8151d import Adafruit_UC8151D  # pylint: disable=unused-import
+from adafruit_epd.ek79686 import Adafruit_EK79686  # pylint: disable=unused-import
 
 # create the spi device and pins we will need
 spi = busio.SPI(board.SCK, MOSI=board.MOSI, MISO=board.MISO)
@@ -29,6 +30,7 @@
 # display = Adafruit_SSD1680(122, 250,        # 2.13" HD Tri-color display
 # display = Adafruit_SSD1681(200, 200,        # 1.54" HD Tri-color display
 # display = Adafruit_IL91874(176, 264,        # 2.7" Tri-color display
+# display = Adafruit_EK79686(176, 264,        # 2.7" Tri-color display
 # display = Adafruit_IL0373(152, 152,         # 1.54" Tri-color display
 # display = Adafruit_UC8151D(128, 296,        # 2.9" mono flexible display
 # display = Adafruit_IL0373(128, 296,         # 2.9" Tri-color display