91 lines
2.3 KiB
Python
91 lines
2.3 KiB
Python
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#!/usr/bin/env python3
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"""Recover K1 from J-Link halt / black screen: hardware reset + run (no RTT required)."""
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from __future__ import annotations
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import argparse
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import time
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DEFAULT_DEVICES = ("Cortex-M4", "AT32F403AC", "AT32F403A")
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def import_deps():
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try:
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import pylink # noqa: F401
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except ImportError as exc:
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raise SystemExit("Missing dependency: pip install pylink-square") from exc
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def connect_jlink(device: str):
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import pylink
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jlink = pylink.JLink()
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jlink.open()
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try:
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jlink.exec_command("HideDeviceSelection = 1")
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except Exception:
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pass
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jlink.set_tif(pylink.enums.JLinkInterfaces.SWD)
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last_error = None
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for candidate in (device, *DEFAULT_DEVICES):
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try:
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try:
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jlink.exec_command(f"Device = {candidate}")
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except Exception:
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pass
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jlink.connect(candidate)
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print(f"Connected as {candidate}")
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return jlink
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except pylink.errors.JLinkException as exc:
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last_error = exc
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jlink.close()
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raise SystemExit(f"Failed to connect J-Link: {last_error}")
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def run_go(jlink) -> None:
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try:
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jlink.reset(halt=False)
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except Exception:
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pass
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try:
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if hasattr(jlink, "restart"):
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jlink.restart()
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else:
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jlink.go()
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except Exception:
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jlink.go()
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def recover(device: str, wait_boot_s: float) -> None:
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jlink = connect_jlink(device)
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try:
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halted = jlink.halted()
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print(f"Target halted={halted}")
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print("Reset + run...")
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run_go(jlink)
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if wait_boot_s > 0:
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print(f"Waiting {wait_boot_s:.0f}s for auto boot...")
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time.sleep(wait_boot_s)
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run_go(jlink)
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print("Done. Screen should show UI; if still black, run flash_app.bat")
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finally:
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try:
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run_go(jlink)
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except Exception:
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pass
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jlink.close()
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def main() -> None:
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parser = argparse.ArgumentParser(description="Recover K1 from halt/black screen via J-Link")
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parser.add_argument("--device", default="AT32F403AC")
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parser.add_argument("--wait-boot", type=float, default=4.0)
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args = parser.parse_args()
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import_deps()
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recover(args.device, args.wait_boot)
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if __name__ == "__main__":
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main()
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