lint & add new chip

Author: ladyada

adafruit_epd/ssd1608.py

@@ -110,7 +110,8 @@ def power_up(self):
         self.command(_SSD1608_SW_RESET)
         self.busy_wait()
         # driver output control
-        self.command(_SSD1608_DRIVER_CONTROL, bytearray([self._width-1, (self._width-1) >> 8, 0x00]))
+        self.command(_SSD1608_DRIVER_CONTROL,
+                     bytearray([self._width-1, (self._width-1) >> 8, 0x00]))
         # Set dummy line period
         self.command(_SSD1608_WRITE_DUMMY, bytearray([0x1B]))
         # Set gate line width
@@ -120,7 +121,8 @@ def power_up(self):
         # Set ram X start/end postion
         self.command(_SSD1608_SET_RAMXPOS, bytearray([0x00, self._height//8 - 1]))
         # Set ram Y start/end postion
-        self.command(_SSD1608_SET_RAMYPOS, bytearray([0, 0, self._height - 1, (self._height - 1) >> 8]))
+        self.command(_SSD1608_SET_RAMYPOS,
+                     bytearray([0, 0, self._height - 1, (self._height - 1) >> 8]))
         # Vcom Voltage
         self.command(_SSD1608_WRITE_VCOM, bytearray([0x70]))
         # LUT

adafruit_epd/ssd1675.py

@@ -0,0 +1,176 @@
+# The MIT License (MIT)
+#
+# Copyright (c) 2018 Dean Miller for Adafruit Industries
+#
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the "Software"), to deal
+# in the Software without restriction, including without limitation the rights
+# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+#
+# The above copyright notice and this permission notice shall be included in
+# all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+# THE SOFTWARE.
+"""
+`adafruit_epd.ssd1675` - Adafruit SSD1675 - ePaper display driver
+====================================================================================
+CircuitPython driver for Adafruit SSD1675 display breakouts
+* Author(s): Dean Miller, Ladyada
+"""
+
+import time
+from micropython import const
+import adafruit_framebuf
+from adafruit_epd.epd import Adafruit_EPD
+
+_SSD1675_DRIVER_CONTROL = const(0x01)
+_SSD1675_GATE_VOLTAGE = const(0x03)
+_SSD1675_SOURCE_VOLTAGE = const(0x04)
+_SSD1675_DEEP_SLEEP = const(0x10)
+_SSD1675_DATA_MODE = const(0x11)
+_SSD1675_SW_RESET = const(0x12)
+_SSD1675_HV_READY = const(0x14)
+_SSD1675_VCI_READY = const(0x15)
+_SSD1675_TEMP_WRITE = const(0x1A)
+_SSD1675_MASTER_ACTIVATE = const(0x20)
+_SSD1675_DISP_CTRL1 = const(0x21)
+_SSD1675_DISP_CTRL2 = const(0x22)
+_SSD1675_WRITE_RAM1 = const(0x24)
+_SSD1675_WRITE_RAM2 = const(0x26)
+_SSD1675_WRITE_VCOM = const(0x2C)
+_SSD1675_READ_OTP = const(0x2D)
+_SSD1675_WRITE_LUT = const(0x32)
+_SSD1675_WRITE_DUMMY = const(0x3A)
+_SSD1675_WRITE_GATELINE = const(0x3B)
+_SSD1675_WRITE_BORDER = const(0x3C)
+_SSD1675_SET_RAMXPOS = const(0x44)
+_SSD1675_SET_RAMYPOS = const(0x45)
+_SSD1675_SET_RAMXCOUNT = const(0x4E)
+_SSD1675_SET_RAMYCOUNT = const(0x4F)
+_SSD1675_SET_ANALOGBLOCK = const(0x74)
+_SSD1675_SET_DIGITALBLOCK = const(0x7E)
+_LUT_DATA = b'\x80`@\x00\x00\x00\x00\x10` \x00\x00\x00\x00\x80`@\x00\x00\x00\x00\x10` \x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x03\x03\x00\x00\x02\t\t\x00\x00\x02\x03\x03\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x15A\xa820\n' # pylint: disable=line-too-long
+
+class Adafruit_SSD1675(Adafruit_EPD):
+    """driver class for Adafruit SSD1675 ePaper display breakouts"""
+    # pylint: disable=too-many-arguments
+    def __init__(self, width, height, spi, *, cs_pin, dc_pin, sramcs_pin, rst_pin, busy_pin):
+        super(Adafruit_SSD1675, self).__init__(width, height, spi, cs_pin, dc_pin,
+                                               sramcs_pin, rst_pin, busy_pin)
+        if width % 8 != 0:
+            width += (8 - width % 8)
+
+        self._buffer1_size = int(width * height / 8)
+        self._buffer2_size = self._buffer1_size
+
+        if sramcs_pin:
+            self._buffer1 = self.sram.get_view(0)
+            self._buffer2 = self.sram.get_view(self._buffer1_size)
+        else:
+            self._buffer1 = bytearray(self._buffer1_size)
+            self._buffer2 = bytearray(self._buffer2_size)
+        # 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(0, True)
+        # pylint: enable=too-many-arguments
+
+    def begin(self, reset=True):
+        """Begin communication with the display and set basic settings"""
+        if reset:
+            self.hardware_reset()
+        self.power_down()
+
+    def busy_wait(self):
+        """Wait for display to be done with current task, either by polling the
+        busy pin, or pausing"""
+        if self._busy:
+            while self._busy.value:
+                time.sleep(0.01)
+        else:
+            time.sleep(0.5)
+
+    def power_up(self):
+        """Power up the display in preparation for writing RAM and updating"""
+        self.hardware_reset()
+        time.sleep(0.1)
+        self.busy_wait()
+
+        self.command(_SSD1675_SW_RESET)
+        self.busy_wait()
+
+        # set analog block control
+        self.command(_SSD1675_SET_ANALOGBLOCK, bytearray([0x54]))
+        # set digital block control
+        self.command(_SSD1675_SET_DIGITALBLOCK, bytearray([0x3B]))
+
+        # driver output control
+        self.command(_SSD1675_DRIVER_CONTROL,
+                     bytearray([0xFA, 0x01, 0x00]))
+        # Data entry sequence
+        self.command(_SSD1675_DATA_MODE, bytearray([0x03]))
+        # Set ram X start/end postion
+        self.command(_SSD1675_SET_RAMXPOS, bytearray([0x00, 0x0F]))
+        # Set ram Y start/end postion
+        self.command(_SSD1675_SET_RAMYPOS, bytearray([0, 0, 0xF9, 0]))
+        # Border color
+        self.command(_SSD1675_WRITE_BORDER, bytearray([0x03]))
+        # Vcom Voltage
+        self.command(_SSD1675_WRITE_VCOM, bytearray([0x70]))
+        # Set gate voltage
+        self.command(_SSD1675_GATE_VOLTAGE, _LUT_DATA[70:71])
+        # Set gate voltage
+        self.command(_SSD1675_SOURCE_VOLTAGE, _LUT_DATA[71:74])
+        # Set dummy line period
+        self.command(_SSD1675_WRITE_DUMMY, _LUT_DATA[74:75])
+        # Set gate line width
+        self.command(_SSD1675_WRITE_GATELINE, _LUT_DATA[75:76])
+        # LUT
+        self.command(_SSD1675_WRITE_LUT, _LUT_DATA[0:70])
+
+        self.command(_SSD1675_SET_RAMXCOUNT, bytearray([0]))
+        # Set RAM Y address counter
+        self.command(_SSD1675_SET_RAMYCOUNT, bytearray([0xF9, 0]))
+
+        self.busy_wait()
+
+    def power_down(self):
+        """Power down the display - required when not actively displaying!"""
+        self.command(_SSD1675_DEEP_SLEEP, bytearray([0x01]))
+        time.sleep(0.1)
+
+    def update(self):
+        """Update the display from internal memory"""
+        self.command(_SSD1675_DISP_CTRL2, bytearray([0xC7]))
+        self.command(_SSD1675_MASTER_ACTIVATE)
+        self.busy_wait()
+        if not self._busy:
+            time.sleep(3)   # wait 3 seconds
+
+    def write_ram(self, index):
+        """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(_SSD1675_WRITE_RAM1, end=False)
+        if index == 1:
+            return self.command(_SSD1675_WRITE_RAM2, end=False)
+        raise RuntimeError("RAM index must be 0 or 1")
+
+    def set_ram_address(self, x, y): # pylint: disable=unused-argument, no-self-use
+        """Set the RAM address location, not used on this chipset but required by
+        the superclass"""
+        self.command(_SSD1675_SET_RAMXCOUNT, bytearray([x]))
+        self.command(_SSD1675_SET_RAMYCOUNT, bytearray([y, y>>8]))