nils
514983c158
Make the repo self-contained (no dependency on the parent firmware-tools/ checkout): copy in the patch/disasm/syx tools and the c2probe RP2040 C2 flash-reader/patcher firmware. - patch_usb1_to_cv.py : byte-level USB-1->CV patch (imported by roundtrip.py) - d8051.py : standalone 8051 disassembler - syx_extract.py : SysEx extractor - c2probe/ : RP2040 C2 flash reader + host scripts (c2probe.c, cdc/dump_flash/patch_c2/reflash_page/verify.py, CMake build) - RECOVERY.md : C2 flash recovery procedure - EFM8UB20_PINOUT.md : reverse-engineered QFP48 pinout + firmware pin usage - roundtrip.py : import local patch_usb1_to_cv (parent as fallback) - .gitignore : exclude c2probe/.venv, c2probe/build Verified: stock + patched round-trips still re-assemble byte-identical.
57 lines
2.0 KiB
Python
57 lines
2.0 KiB
Python
#!/usr/bin/env python3
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# verify.py -- re-read specific flash regions N times to check whether the
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# bytes are stable (real flash) or vary (C2 read errors). Also re-reads the
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# known-intact 0xE800 page as a control.
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import os, sys, time, select, termios
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DEV = os.environ.get("C2PROBE_DEV", "/dev/cu.usbmodem2101")
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sys.path.insert(0, os.path.dirname(os.path.abspath(__file__)))
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import cdc
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REGIONS = [
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("0xE800 (control, intact)", 0xE800, 256),
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("0xEDFF (big diff run)", 0xEDFF, 256),
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("0xEF00 (within diff run)", 0xEF00, 128),
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("0xF1D0 (scattered diffs)", 0xF1D0, 64),
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("0xF200 (diff)", 0xF200, 16),
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("0xF800 (6B diff @app end)", 0xF800, 16),
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("0xFC00 (gap region)", 0xFC00, 64),
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]
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N = 4
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def main():
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fd = cdc.open_port()
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cdc.drain(fd, 0.4)
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r = cdc.cmd(fd, "piinit", 12)
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print("piinit:", r)
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if r.strip() != "ok piinit":
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print("piinit failed"); return 1
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for name, addr, n in REGIONS:
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reads = []
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ok = True
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for _ in range(N):
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lc = n if n < 256 else 0
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r = cdc.cmd(fd, f"read {addr:04x} {lc}", 12).strip()
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if r.startswith("data "):
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parts = r.split()
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try:
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reads.append(bytes.fromhex(parts[3]))
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except (IndexError, ValueError):
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reads.append(None); ok = False
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else:
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reads.append(None); ok = False
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# stability check
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good = [b for b in reads if b is not None and len(b) == n]
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stable = len(set(good)) == 1 and len(good) == N
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print(f"\n{name} @0x{addr:04x} len={n}")
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if not good:
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print(" ALL READS FAILED")
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continue
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for i, b in enumerate(reads):
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tag = "ok " if (b is not None and len(b)==n) else "FAIL"
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print(f" [{i}] {tag} {b.hex() if b else ''}")
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print(f" stable={stable} distinct={len(set(good))}")
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return 0
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if __name__ == "__main__":
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sys.exit(main()) |