Jimmy
5094c7bcee
Bring the five-panel hex portal online with a browser 3D/schematic preview, Pi SPI backends, and renamed multi-panel Pico UDP firmware. Co-authored-by: Cursor <cursoragent@cursor.com>
70 lines
2.0 KiB
Python
70 lines
2.0 KiB
Python
#!/usr/bin/env python3
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"""Raise spidev bufsiz so full WS2812 SPI frames fit (405 LEDs ≈ 10 KiB)."""
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from __future__ import annotations
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import argparse
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import subprocess
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import sys
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from pathlib import Path
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from leds.backends.spi import _DEFAULT_BUFSIZ, spidev_bufsize
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MODPROBE_D = Path("/etc/modprobe.d/spidev-bufsiz.conf")
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MARKER = "# portal spidev bufsiz"
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def main() -> int:
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parser = argparse.ArgumentParser(
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description="Configure spidev bufsiz for long WS2812 SPI strips"
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)
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parser.add_argument(
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"--bufsiz",
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type=int,
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default=_DEFAULT_BUFSIZ,
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help=f"Kernel SPI buffer size (default {_DEFAULT_BUFSIZ})",
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)
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parser.add_argument(
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"--install",
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action="store_true",
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help="Write /etc/modprobe.d/spidev-bufsiz.conf and reload spidev (sudo)",
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)
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args = parser.parse_args()
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current = spidev_bufsize()
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print(f"spidev bufsiz: {current}")
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print(f"405 LEDs need ~9762 bytes per frame.\n")
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line = f"options spidev bufsiz={args.bufsiz}"
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print("Add to /etc/modprobe.d/spidev-bufsiz.conf:\n")
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print(f"{MARKER}")
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print(line)
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print("\nThen reload:\n sudo modprobe -r spidev && sudo modprobe spidev")
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if not args.install:
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return 0
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try:
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existing = MODPROBE_D.read_text() if MODPROBE_D.exists() else ""
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if MARKER in existing:
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print(f"\n{MODPROBE_D} already configured.")
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else:
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MODPROBE_D.write_text(f"{MARKER}\n{line}\n")
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print(f"\nWrote {MODPROBE_D}.")
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subprocess.run(["modprobe", "-r", "spidev"], check=False)
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subprocess.run(["modprobe", "spidev", f"bufsiz={args.bufsiz}"], check=True)
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print(f"Reloaded spidev (bufsiz={spidev_bufsize()}).")
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except OSError as exc:
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print(f"Error: {exc}", file=sys.stderr)
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print("Re-run with sudo.", file=sys.stderr)
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return 1
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except subprocess.CalledProcessError as exc:
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print(f"modprobe failed: {exc}", file=sys.stderr)
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return 1
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return 0
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if __name__ == "__main__":
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raise SystemExit(main())
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