protocol: send 3-step data requests for full compliance config (SUB 1A)
Reverse-engineered the full Blastware 4-frame sequence for SUB 1A: A (probe): offset=0x0000, params[7]=0x64 B (data req 1): offset=0x0400, params[2]=0x00, params[7]=0x64 → bytes 0..1023 C (data req 2): offset=0x0400, params[2]=0x04, params[7]=0x64 → bytes 1024..2047 D (data req 3): offset=0x002A, params[2]=0x08, params[7]=0x64 → bytes 2048..2089 We were only sending A+D and getting 44 bytes (the last chunk). Now sends B, C, D in sequence; each E5 response has 11-byte echo header stripped, and chunks are concatenated. Devices that return all data in one frame (BE18189 style) are handled — timeouts on B/C are skipped gracefully and data from D still accumulates. Total expected: 0x0400 + 0x0400 + 0x002A = 0x082A = 2090 bytes. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
This commit is contained in:
Brian Harrison
@@ -436,67 +436,66 @@ class MiniMateProtocol:
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log.debug("read_compliance_config: 1A data request offset=0x2A params[2]=0x08")
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self._send(build_bw_frame(SUB_COMPLIANCE, 0x2A, _DATA_PARAMS))
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# ── Accumulate E5 frames ──────────────────────────────────────────────
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# BE18189 sends one large frame; BE11529 may chunk into many small ones.
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# Loop until target bytes received or inter-frame gap expires.
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_TARGET = 0x082A # 2090 bytes — known total from BW captures
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_INTER_FRAME_TIMEOUT = 2.0 # seconds; give up if no new frame within this
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config = bytearray()
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frame_count = 0
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# ── Multi-request accumulation ────────────────────────────────────────
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#
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# Full BW sequence (confirmed from raw_bw captures 3-11-26):
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#
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# Frame B: offset=0x0400 params[2]=0x00 → requests cfg bytes 0..1023
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# Frame C: offset=0x0400 params[2]=0x04 → requests cfg bytes 1024..2047
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# Frame D: offset=0x002A params[2]=0x08 → requests cfg bytes 2048..2089
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#
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# Total: 0x0400 + 0x0400 + 0x002A = 0x082A = 2090 bytes.
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#
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# The "offset" field in B and C encodes the chunk length (0x0400 = 1024),
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# not a byte offset into the config. params[2] tracks cumulative pages
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# (0x00 → 0x04 → 0x08; each page = 256 bytes → 0x04 pages = 1024 bytes).
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#
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# Each request gets its own E5 response with an 11-byte echo header.
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# Devices that send the full block in a single frame (BE18189) may return
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# the entire config from the last request alone — we handle both cases by
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# trying each step and concatenating whatever arrives.
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while len(config) < _TARGET:
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timeout = self._recv_timeout if frame_count == 0 else _INTER_FRAME_TIMEOUT
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# reset_parser=True only for the first frame; subsequent frames must not
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# discard bytes already buffered from the device's chunked response stream.
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try:
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data_rsp = self._recv_one(
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expected_sub=rsp_sub,
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timeout=timeout,
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reset_parser=(frame_count == 0),
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)
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except TimeoutError:
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if frame_count == 0:
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raise # hard fail — device never responded at all
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# Inter-frame gap expired — device finished sending
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log.warning(
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"read_compliance_config: inter-frame timeout after %d frames "
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"(%d / %d cfg bytes received)",
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frame_count, len(config), _TARGET,
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)
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break
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_DATA_PARAMS_B = bytes([0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x64, 0x00, 0x00])
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_DATA_PARAMS_C = bytes([0x00, 0x00, 0x04, 0x00, 0x00, 0x00, 0x00, 0x64, 0x00, 0x00])
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# _DATA_PARAMS_D already built above as _DATA_PARAMS
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frame_count += 1
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_STEPS = [
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("B", 0x0400, _DATA_PARAMS_B),
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("C", 0x0400, _DATA_PARAMS_C),
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("D", 0x002A, _DATA_PARAMS), # _DATA_PARAMS built above
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]
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if frame_count == 1:
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# First frame: strip 11-byte echo header (length + key echo + padding)
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chunk = data_rsp.data[11:]
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log.warning(
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"read_compliance_config: frame %d page=0x%04X "
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"data=%d cfg_chunk=%d (header stripped)",
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frame_count, data_rsp.page_key, len(data_rsp.data), len(chunk),
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)
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else:
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# Subsequent frames: log raw prefix to determine structure,
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# then strip the same 11-byte header (assumption — verify from logs).
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raw = data_rsp.data
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log.warning(
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"read_compliance_config: frame %d page=0x%04X data=%d "
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"raw[0:16]=%s",
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frame_count, data_rsp.page_key, len(raw),
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raw[:16].hex() if len(raw) >= 16 else raw.hex(),
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)
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# Strip header if frame is long enough; otherwise accumulate all
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chunk = raw[11:] if len(raw) > 11 else raw
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config = bytearray()
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config.extend(chunk)
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log.warning(
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"read_compliance_config: running total=%d / %d",
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len(config), _TARGET,
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for step_name, step_offset, step_params in _STEPS:
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log.debug(
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"read_compliance_config: sending frame %s offset=0x%04X params=%s",
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step_name, step_offset, step_params.hex(),
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)
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self._send(build_bw_frame(SUB_COMPLIANCE, step_offset, step_params))
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try:
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data_rsp = self._recv_one(expected_sub=rsp_sub)
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except TimeoutError:
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log.warning(
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"read_compliance_config: frame %s — no E5 response (timeout); "
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"device may return all data on a later request",
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step_name,
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)
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continue
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chunk = data_rsp.data[11:]
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log.warning(
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"read_compliance_config: frame %s page=0x%04X data=%d "
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"cfg_chunk=%d running_total=%d",
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step_name, data_rsp.page_key, len(data_rsp.data),
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len(chunk), len(config) + len(chunk),
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)
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config.extend(chunk)
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log.warning(
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"read_compliance_config: done — %d frame(s), %d cfg bytes total",
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frame_count, len(config),
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"read_compliance_config: done — %d cfg bytes total",
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len(config),
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)
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# Hex dump first 128 bytes for field mapping
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