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ssd1681: Fix OverflowError for displays larger than 255x255.

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Need to explicitly truncate to just the low-order byte; otherwise, creating these bytearrays results in `OverflowError: value must fit in 1 byte(s)`.
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Anson Mansfield 2025-06-02 10:11:18 -04:00 committed by GitHub
parent 6219e0623f
commit 298eeb6c9d
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GPG key ID: B5690EEEBB952194
1 changed files with 3 additions and 3 deletions
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6
adafruit_epd/ssd1681.py
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@ -143,7 +143,7 @@ class Adafruit_SSD1681(Adafruit_EPD):
# driver output control
self.command(
_SSD1681_DRIVER_CONTROL,
bytearray([self._width - 1, (self._width - 1) >> 8, 0x00]),
bytearray([(self._width - 1) & 0xFF, (self._width - 1) >> 8, 0x00]),
)
# data entry mode
self.command(_SSD1681_DATA_MODE, bytearray([0x03]))
@ -152,7 +152,7 @@ class Adafruit_SSD1681(Adafruit_EPD):
# Set ram Y start/end postion
self.command(
_SSD1681_SET_RAMYPOS,
bytearray([0, 0, self._height - 1, (self._height - 1) >> 8]),
bytearray([0, 0, (self._height - 1) & 0xFF, (self._height - 1) >> 8]),
)
# Set border waveform
self.command(_SSD1681_WRITE_BORDER, bytearray([0x05]))
@ -190,4 +190,4 @@ class Adafruit_SSD1681(Adafruit_EPD):
# Set RAM X address counter
self.command(_SSD1681_SET_RAMXCOUNT, bytearray([x]))
# Set RAM Y address counter
self.command(_SSD1681_SET_RAMYCOUNT, bytearray([y, y >> 8]))
self.command(_SSD1681_SET_RAMYCOUNT, bytearray([y & 0xFF, y >> 8]))