92 lines
2.7 KiB
Python
92 lines
2.7 KiB
Python
# SPDX-FileCopyrightText: 2017 Scott Shawcroft, written for Adafruit Industries
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# SPDX-FileCopyrightText: Copyright (c) 2025 Scott Shawcroft for Adafruit Industries
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#
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# SPDX-License-Identifier: MIT
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"""
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`adafruit_uc8179`
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================================================================================
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CircuitPython `displayio` driver for UC8179-based ePaper displays
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* Author(s): Scott Shawcroft
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Implementation Notes
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--------------------
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**Hardware:**
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.. todo:: Add links to any specific hardware product page(s), or category page(s).
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Use unordered list & hyperlink rST inline format: "* `Link Text <url>`_"
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**Software and Dependencies:**
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* Adafruit CircuitPython firmware for the supported boards:
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https://circuitpython.org/downloads
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* Adafruit's EPaperDisplay library: https://github.com/adafruit/Adafruit_CircuitPython_EPaperDisplay
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"""
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import displayio
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try:
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from epaperdisplay import EPaperDisplay
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except ImportError:
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from adafruit_epaperdisplay import EPaperDisplay
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__version__ = "0.0.0+auto.0"
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__repo__ = "https://github.com/adafruit/Adafruit_CircuitPython_UC8179.git"
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_START_SEQUENCE = (
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b"\x01\x04\x07\x07\x3f\x3f" # POWERSETTING: VGH=20V, VGL=-20V, VDH=15V, VDL=-15V
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b"\x04\x00" # POWERON
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b"\x00\x01\x03" # PANELSETTING
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b"\x61\x04\x00\x00\x00\x00" # TRES: resolution
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b"\x15\x01\x00" # DUALSPI: single SPI
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b"\x50\x02\x10\x07" # WRITE_VCOM
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b"\x60\x01\x22" # TCON
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)
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_STOP_SEQUENCE = b"\x02\x00" # POWEROFF
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class UC8179(EPaperDisplay):
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"""UC8179 ePaper display driver"""
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def __init__(self, bus, **kwargs):
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width = kwargs.get("width", 800)
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height = kwargs.get("height", 600)
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# Adjust height to be divisible by 8
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width = (width + 7) // 8 * 8
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start_sequence = bytearray(_START_SEQUENCE)
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start_sequence[13] = width >> 8
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start_sequence[14] = width & 0xFF
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start_sequence[15] = height >> 8
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start_sequence[16] = height & 0xFF
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if "highlight_color" in kwargs:
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color_ram_command = 0x13
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black_ram_command = 0x10
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panel_setting = 0x03
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else:
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color_ram_command = None
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black_ram_command = 0x13
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panel_setting = 0x13
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start_sequence[10] = panel_setting
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super().__init__(
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bus,
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start_sequence,
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_STOP_SEQUENCE,
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**kwargs,
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ram_width=800,
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ram_height=600,
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busy_state=False,
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write_black_ram_command=black_ram_command,
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write_color_ram_command=color_ram_command,
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refresh_display_command=0x12,
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refresh_time=16,
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always_toggle_chip_select=True
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)
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