minimateplus/blastware_file.py

@@ -686,24 +686,19 @@ def write_blastware_file(
             # Probe frame: always process regardless of classification.
             # It holds the STRT record; probe_skip positions us past it.
             skip = probe_skip
-        elif ftype == "probe_or_strt":
-            # Real duplicate probe frames should be skipped (very rare).
-            log.warning(
-                "write_blastware_file: frame %d classified as probe_or_strt — skipping",
-                fi,
-            )
-            continue
         else:
-            # Waveform chunks, metadata/compliance frames, and unknown frames are all
-            # included.  The A5 stream is collected with stop_after_metadata=True +
-            # extra_chunks_after_metadata=1, so body_frames contains:
-            #   [0] probe frame
-            #   [1..N] waveform ADC chunks
-            #   [N+1] first compliance frame (contains "Project:", "Client:", etc.)
-            #   [N+2] second compliance frame (continuation of compliance block)
-            # All of these contribute to the body; the 26-byte footer is separated out
-            # at the end.  Do NOT gate on metadata classification here — the compliance
-            # block spans 2 frames and skipping frame N+2 produces a truncated file.
+            # ALL subsequent frames are included unconditionally — no filtering on
+            # frame type.  In the A5 stream, frame 0 is always the probe response;
+            # frames 1+ are always data (waveform chunks, compliance config, or
+            # compliance continuation).  Classification is for logging only.
+            #
+            # DO NOT gate on classify_frame() here:
+            #   - "probe_or_strt" at fi>0 is always a false positive — ADC binary
+            #     data can coincidentally contain b"STRT\xff\xfe" (confirmed from
+            #     live capture: frames 1 and 5 matched on event key=01110000).
+            #   - "metadata" frames must be included (compliance config body).
+            #   - The compliance block spans 2 frames; skipping either produces a
+            #     truncated file that Blastware rejects.
             skip = 13 if fi == 1 else 12
 
         all_bytes.extend(_frame_body_bytes(frame, skip))