2026-05-04 13:22:56 -04:00
1 changed files with 21 additions and 1 deletions
@@ -646,7 +646,27 @@ class MiniMateProtocol:
            frames_data.append(rsp)
            if stop_after_metadata and b"Project:" in rsp.data:
-                log.debug("5A A5[%d] metadata found — stopping early", chunk_num)
+                # Download exactly one more chunk after finding metadata — this is
                # what Blastware does.  The extra chunk contains the tail ADC data
                # and primes the device to return a valid footer in the termination
                # response.  Without it, termination returns an empty ack with no
                # footer bytes (confirmed 2026-04-23 from HxD comparison).
                log.debug("5A A5[%d] metadata found — fetching one more chunk then stopping", chunk_num)
                chunk_num += 1
                counter = chunk_num * _BULK_COUNTER_STEP
                params = bulk_waveform_params(key4, counter)
                self._send(build_5a_frame(_BULK_CHUNK_OFFSET, params))
                try:
                    extra = self._recv_one(expected_sub=rsp_sub, timeout=10.0)
                    log.debug("5A A5[%d] extra chunk page_key=0x%04X data_len=%d",
                              chunk_num, extra.page_key, len(extra.data))
                    if extra.page_key == 0x0000:
                        if include_terminator:
                            frames_data.append(extra)
                        return frames_data
                    frames_data.append(extra)
                except TimeoutError:
                    log.debug("5A extra chunk timed out — end of stream")
                break
        else:
            log.warning(