micheleandCursor
cc4a03168e
Decouple the SigmaStudio RAM download from compiled-in adau1701_program.c: DRAD v1 blobs in the dsp partition with embedded fallback, POST /api/dsp/program, and host-tested blob parse/serialize helpers. Co-authored-by: Cursor <cursoragent@cursor.com>
69 lines
1.8 KiB
Python
69 lines
1.8 KiB
Python
#!/usr/bin/env python3
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"""pack_dsp_program.py — build a DRAD v1 ADAU1701 program blob for POST /api/dsp/program.
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Reads a JSON file describing SigmaStudio register writes:
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[
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{"address": 2076, "data": [0, 28]},
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{"address": 1024, "data": [0, 0, ...]}
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]
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Usage:
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python3 tools/pack_dsp_program.py writes.json -o dsp_program.bin
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"""
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from __future__ import annotations
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import argparse
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import json
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import struct
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import sys
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import zlib
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from pathlib import Path
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from typing import Any
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MAGIC = b"DRAD"
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VERSION = 1
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def crc32(data: bytes) -> int:
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return zlib.crc32(data) & 0xFFFFFFFF
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def pack_writes(writes: list[dict[str, Any]]) -> bytes:
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payload = bytearray()
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for entry in writes:
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address = int(entry["address"])
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data = bytes(int(x) & 0xFF for x in entry["data"])
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if not data:
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raise ValueError(f"empty data at address 0x{address:04X}")
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payload += struct.pack("<HH", address, len(data))
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payload += data
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header = bytearray()
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header += MAGIC
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header += struct.pack("<HH", VERSION, len(writes))
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header += struct.pack("<I", crc32(payload))
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return bytes(header + payload)
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def main() -> int:
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parser = argparse.ArgumentParser(description="Pack ADAU1701 DSP program blob")
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parser.add_argument("json_file", type=Path, help="JSON array of register writes")
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parser.add_argument("-o", "--output", type=Path, required=True, help="Output .bin")
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args = parser.parse_args()
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writes = json.loads(args.json_file.read_text(encoding="utf-8"))
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if not isinstance(writes, list) or not writes:
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print("JSON must be a non-empty array", file=sys.stderr)
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return 1
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blob = pack_writes(writes)
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args.output.write_bytes(blob)
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print(f"Wrote {len(blob)} bytes to {args.output}")
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return 0
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if __name__ == "__main__":
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raise SystemExit(main())
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