Updates

mipi_test_interactive.py

@@ -29,6 +29,10 @@ from datetime import datetime
 from pathlib import Path
 
 import math
+import os
+import struct
+import tempfile
+import wave
 
 import anthropic
 import vxi11
@@ -37,8 +41,7 @@ from dotenv import load_dotenv
 import ai_mgmt
 import rigol_scope
 from csv_preprocessor import (analyze_lp_file, LPMetrics,
-                               HS_BURST_AMPLITUDE_MIN_MV, FLICKER_LP_LOW_MAX_NS,
-                               analyze_int_file)
+                               HS_BURST_AMPLITUDE_MIN_MV, FLICKER_LP_LOW_MAX_NS)
 
 load_dotenv(Path(__file__).parent / ".env")
 
@@ -565,6 +568,7 @@ def _configure_for_lp():
     scope.write(":TRIGger:EDGE:SOURce CHANnel3")
     scope.write(":TRIGger:EDGE:SLOPe NEGative")
     scope.write(f":TRIGger:EDGE:LEVel {LP_TRIG_LEVEL:.3f}")
+    scope.write(":TRIGger:SWEep NORMal")  # must wait for real LP-11→LP-01 edge, not auto-fire on HS
     time.sleep(0.1)
 
 
@@ -653,19 +657,6 @@ def _fetch_registers(ts: str, iteration: int) -> None:
 
 
 
-def _analyze_int_file(ts: str, iteration: int) -> None:
-    """Print IRQ pin summary and alert if the SN65DSI83 asserted the IRQ line."""
-    path = DATA_DIR / f"{ts}_int_{iteration:04d}.csv"
-    if not path.exists():
-        return
-    try:
-        m = analyze_int_file(path)
-        print(m.summary())
-        if m.int_asserted:
-            print(f"\n  *** IRQ ASSERTED: SN65DSI83 flagged a bridge error at "
-                  f"capture {iteration:04d} — check CSR 0xE5 for error bits ***\n")
-    except Exception as e:
-        print(f"  INT ANALYSIS ERROR: {e}")
 
 
 def dual_capture(iteration: int) -> str:
@@ -699,12 +690,6 @@ def dual_capture(iteration: int) -> str:
             print(f"  SAVED: {v18_path.name}  ({n} samples)")
         else:
             print("  RIGOL CH1: waveform read failed — check connection and probe.")
-        int_path = DATA_DIR / f"{ts}_int_{iteration:04d}.csv"
-        n_int = rigol_scope.read_int_csv(int_path)
-        if n_int:
-            print(f"  SAVED: {int_path.name}  ({n_int} samples)")
-        else:
-            print("  RIGOL CH2: IRQ read failed.")
     _restore_hs_config()
     try:
         requests.put(URL, json={"state": "on"}, timeout=1)
@@ -856,6 +841,56 @@ def _append_flicker_log(ts: str, iteration: int, m: LPMetrics) -> None:
         ])
 
 
+def _play_alarm() -> None:
+    """Play three short beeps using a generated WAV tone."""
+    sample_rate = 44100
+    freq        = 880
+    duration    = 0.35
+    n_samples   = int(sample_rate * duration)
+    samples     = [int(32767 * math.sin(2 * math.pi * freq * i / sample_rate))
+                   for i in range(n_samples)]
+    packed      = struct.pack(f"<{n_samples}h", *samples)
+
+    tmp = None
+    try:
+        fd, tmp = tempfile.mkstemp(suffix=".wav")
+        os.close(fd)
+        with wave.open(tmp, "w") as w:
+            w.setnchannels(1)
+            w.setsampwidth(2)
+            w.setframerate(sample_rate)
+            w.writeframes(packed)
+
+        # os.system inherits the full shell environment (XDG_RUNTIME_DIR, PULSE_SERVER, etc.)
+        played = False
+        for cmd in (f"aplay -q {tmp}", f"pw-play {tmp}", f"paplay {tmp}"):
+            if os.system(f"{cmd} 2>/dev/null") == 0:
+                played = True
+                for _ in range(2):
+                    time.sleep(0.2)
+                    os.system(f"{cmd} 2>/dev/null")
+                break
+
+        if not played:
+            try:
+                with open("/dev/tty", "w") as tty:
+                    for _ in range(5):
+                        tty.write("\a")
+                        tty.flush()
+                        time.sleep(0.3)
+            except Exception:
+                print("\a" * 5, end="", flush=True)
+
+    except Exception:
+        print("\a" * 5, end="", flush=True)
+    finally:
+        if tmp:
+            try:
+                os.unlink(tmp)
+            except Exception:
+                pass
+
+
 def _analyze_lp_files(
     ts: str, iteration: int
 ) -> tuple[list[str], list[LPMetrics]]:
@@ -1340,9 +1375,6 @@ def run_interactive_test() -> None:
             except Exception as e:
                 print(f"  TRANSFER ERROR: {e}")
 
-            # ── IRQ pin analysis ───────────────────────────────────────────
-            _analyze_int_file(ts, iteration)
-
             # ── Rule-based LP analysis ─────────────────────────────────────
             lp_summaries, suspects = _analyze_lp_files(ts, iteration)
 
@@ -1365,11 +1397,7 @@ def run_interactive_test() -> None:
 
             if claude_flicker:
                 # ── Keep display ON — ask operator ─────────────────────────
-                # Play alarm sound once to alert the operator
-                subprocess.run(
-                    ["pw-play", "/usr/share/sounds/freedesktop/stereo/alarm-clock-elapsed.oga"],
-                    check=False,
-                )
+                _play_alarm()
                 print("\n" + "=" * 64)
                 print("  CLAUDE SUSPECTS FLICKER — OBSERVE THE DISPLAY NOW")
                 print("=" * 64)