X-Git-Url: https://git.ayoreis.com/hackapet/Adafruit_Blinka_Displayio.git/blobdiff_plain/a94203addedf0b7d4e5885848117b10bf6fa9fe1..7c8fcb8b324e839a65d45174da42bf9a7ab1a217:/displayio/_i2cdisplay.py diff --git a/displayio/_i2cdisplay.py b/displayio/_i2cdisplay.py index 2647659..e37eb8a 100644 --- a/displayio/_i2cdisplay.py +++ b/displayio/_i2cdisplay.py @@ -23,7 +23,7 @@ displayio for Blinka import time import busio import digitalio -import circuitpython_typing +from circuitpython_typing import ReadableBuffer from ._constants import CHIP_SELECT_UNTOUCHED, DISPLAY_COMMAND __version__ = "0.0.0+auto.0" @@ -53,6 +53,15 @@ class I2CDisplay: self._i2c = i2c_bus self._dev_addr = device_address + def __new__(cls, *args, **kwargs): + from . import ( # pylint: disable=import-outside-toplevel, cyclic-import + allocate_display_bus, + ) + + display_bus_instance = super().__new__(cls) + allocate_display_bus(display_bus_instance) + return display_bus_instance + def _release(self): self.reset() self._i2c.deinit() @@ -76,7 +85,7 @@ class I2CDisplay: while not self._i2c.try_lock(): pass - def send(self, command: int, data: circuitpython_typing.ReadableBuffer) -> None: + 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 @@ -89,10 +98,9 @@ class I2CDisplay: def _send( self, data_type: int, - chip_select: int, - data: circuitpython_typing.ReadableBuffer, + _chip_select: int, # Chip select behavior + data: ReadableBuffer, ): - # pylint: disable=unused-argument if data_type == DISPLAY_COMMAND: n = len(data) if n > 0: @@ -101,12 +109,12 @@ class I2CDisplay: command_bytes[2 * i] = 0x80 command_bytes[2 * i + 1] = data[i] - self._i2c.writeto(self._dev_addr, buffer=command_bytes, stop=True) + self._i2c.writeto(self._dev_addr, buffer=command_bytes) else: data_bytes = bytearray(len(data) + 1) data_bytes[0] = 0x40 data_bytes[1:] = data - self._i2c.writeto(self._dev_addr, buffer=data_bytes, stop=True) + self._i2c.writeto(self._dev_addr, buffer=data_bytes) def _end_transaction(self) -> None: """Release the bus after sending data."""