mangavalkandClaude Opus 5.5
95686a3608
- Brightness, blink, screen on/off, annunciators, cursor control, display modes, user-defined characters, code table, international charset, peripheral select, self-test, raw writes and reinit - UTF-8 text is encoded with the selected code table (tables generated from Python codecs by tools/gen_charmaps.py), falling back to accent-stripping - Settings survive reinit and the self-test - Example gains brightness select and display switch, and uses the git source on mangavalk.com Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
79 lines
2.3 KiB
Python
79 lines
2.3 KiB
Python
"""Generate components/samsung_vfd/charmaps.h from Python's code page codecs.
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Each table lists the Unicode code point shown for bytes 0x80..0xFF in one of
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the display's CG-ROM fonts (datasheet section 6), or 0 where there is none.
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CP10 (for DP86-20) has no standard codec, so it gets no table.
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Run from the repo root: python tools/gen_charmaps.py
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"""
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from pathlib import Path
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# Same order as the ESC t n argument (datasheet 5.4.18).
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TABLES = [
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("PC437", "cp437"),
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("PC850", "cp850"),
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("PC866", "cp866"),
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("PC737", "cp737"),
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("PC775", "cp775"),
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("CP10", None),
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("PC864", "cp864"),
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("PC852", "cp852"),
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]
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OUT = Path(__file__).resolve().parent.parent / "components" / "samsung_vfd" / "charmaps.h"
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def high_half(codec):
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points = []
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for b in range(0x80, 0x100):
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try:
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ch = bytes([b]).decode(codec)
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except UnicodeDecodeError:
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ch = ""
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points.append(ord(ch) if len(ch) == 1 else 0)
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return points
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def main():
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lines = [
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"// Generated by tools/gen_charmaps.py -- do not edit.",
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"#pragma once",
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"",
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"#include <cstdint>",
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"",
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"namespace esphome {",
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"namespace samsung_vfd {",
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"",
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]
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names = []
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for name, codec in TABLES:
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if codec is None:
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names.append("nullptr")
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continue
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ident = f"CHARMAP_{name}"
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names.append(ident)
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pts = high_half(codec)
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lines.append(f"// {name} ({codec}), bytes 0x80..0xFF")
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lines.append(f"static const uint16_t {ident}[128] = {{")
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for i in range(0, 128, 8):
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row = ", ".join(f"0x{p:04X}" for p in pts[i : i + 8])
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lines.append(f" {row}, // 0x{0x80 + i:02X}")
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lines.append("};")
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lines.append("")
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lines.append("// Indexed by CodeTable (the ESC t argument); nullptr = no mapping known.")
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lines.append(f"static const uint16_t *const CHARMAPS[{len(TABLES)}] = {{")
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for (name, _), ident in zip(TABLES, names):
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lines.append(f" {ident}, // {name}")
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lines.append("};")
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lines.append("")
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lines.append("} // namespace samsung_vfd")
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lines.append("} // namespace esphome")
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lines.append("")
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OUT.write_text("\n".join(lines), encoding="utf-8", newline="\n")
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print(f"wrote {OUT}")
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if __name__ == "__main__":
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main()
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