+++ /dev/null
-# SPDX-FileCopyrightText: 2020 Melissa LeBlanc-Williams for Adafruit Industries
-#
-# SPDX-License-Identifier: MIT
-
-"""
-`paralleldisplay`
-================================================================================
-
-paralleldisplay for Blinka
-
-**Software and Dependencies:**
-
-* Adafruit Blinka:
- https://github.com/adafruit/Adafruit_Blinka/releases
-
-* Author(s): Melissa LeBlanc-Williams
-
-"""
-
-from typing import Optional
-import microcontroller
-from circuitpython_typing import ReadableBuffer
-
-__version__ = "0.0.0+auto.0"
-__repo__ = "https://github.com/adafruit/Adafruit_Blinka_displayio.git"
-
-
-class ParallelBus:
- """Manage updating a display over 8-bit parallel bus in the background while Python code
- runs. This protocol may be refered to as 8080-I Series Parallel Interface in datasheets.
- It doesn't handle display initialization.
- """
-
- def __init__(
- self,
- *,
- data0: microcontroller.Pin,
- command: microcontroller.Pin,
- chip_select: microcontroller.Pin,
- write: microcontroller.Pin,
- read: Optional[microcontroller.Pin],
- reset: Optional[microcontroller.Pin] = None,
- frequency: int = 30000000,
- ):
- # pylint: disable=unnecessary-pass
- """Create a ParallelBus object associated with the given pins. The
- bus is inferred from data0 by implying the next 7 additional pins on a given GPIO
- port.
-
- The parallel bus and pins are then in use by the display until
- displayio.release_displays() is called even after a reload. (It does this so
- CircuitPython can use the display after your code is done.) So, the first time you
- initialize a display bus in code.py you should call
- :py:func`displayio.release_displays` first, otherwise it will error after the first
- code.py run.
- """
- pass
-
- def reset(self) -> None:
- """Performs a hardware reset via the reset pin. Raises an exception if called when
- no reset pin is available.
- """
- raise NotImplementedError("ParallelBus reset has not been implemented yet")
-
- def send(self, command: int, data: ReadableBuffer) -> None:
- """Sends the given command value followed by the full set of data. Display state,
- such as vertical scroll, set via ``send`` may or may not be reset once the code is
- done.
- """
- raise NotImplementedError("ParallelBus send has not been implemented yet")
-
- def _send(
- self,
- _data_type: int,
- _chip_select: int,
- _data: ReadableBuffer,
- ) -> None:
- pass
-
- def _free(self) -> bool:
- """Attempt to free the bus and return False if busy"""
-
- def _begin_transaction(self) -> bool:
- pass
-
- def _end_transaction(self) -> None:
- pass