fix: improve monitoring functionality with session-reset signal and payload adjustments

minimateplus/protocol.py

@@ -37,6 +37,7 @@ from .framing import (
     bulk_waveform_term_params,
     POLL_PROBE,
     POLL_DATA,
+    SESSION_RESET,
 )
 from .transport import BaseTransport
 
@@ -190,6 +191,13 @@ class MiniMateProtocol:
         log.debug("startup: draining boot string")
         self._drain_boot_string()
 
+        # Send session-reset signal (ACK+ETX) before the first POLL probe.
+        # Confirmed from 4-8-26 BW TX captures: Blastware always sends this
+        # 2-byte signal at session start.  Required to wake units that are
+        # actively monitoring — without it they don't respond to POLL over TCP.
+        log.debug("startup: session reset signal")
+        self._send(SESSION_RESET)
+
         log.debug("startup: POLL probe")
         self._send(POLL_PROBE)
         probe_rsp = self._recv_one(
@@ -200,6 +208,10 @@ class MiniMateProtocol:
             "startup: POLL probe response page_key=0x%04X", probe_rsp.page_key
         )
 
+        # Send another session-reset between probe and data (matches BW behavior).
+        log.debug("startup: session reset signal (inter-frame)")
+        self._send(SESSION_RESET)
+
         log.debug("startup: POLL data request")
         self._send(POLL_DATA)
         data_rsp = self._recv_one(