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A work-around for using byte-string as the data #138

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A work-around for using byte-string as the data #138

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a7c4f8b
A work-around for using byte-string as the data
EAGrahamJr Aug 2, 2024
8c3ea7e
KISS - just fix the buffer before sending.
EAGrahamJr Aug 6, 2024
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2 changes: 2 additions & 0 deletions .gitignore
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Original file line number Diff line number Diff line change
Expand Up @@ -16,3 +16,5 @@ bundles
dist
**/*.egg-info
.vscode
venv
.venv
8 changes: 7 additions & 1 deletion i2cdisplaybus/__init__.py
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Expand Up @@ -86,8 +86,14 @@ def send(self, command: int, data: ReadableBuffer) -> None:
such as vertical scroll, set via ``send`` may or may not be reset once the code is
done.
"""

# prepend the command to the data buffer
buffer = bytearray(len(data) + 1)
buffer[0] = command & 0xFF
buffer[1:] = data

self._begin_transaction()
self._send(DISPLAY_COMMAND, CHIP_SELECT_UNTOUCHED, bytes([command] + data))
self._send(DISPLAY_COMMAND, CHIP_SELECT_UNTOUCHED, buffer)
self._end_transaction()

def _send(
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