From 2fadb3e6e289f972fdb2110e34e3d61ff2c7c73f Mon Sep 17 00:00:00 2001
From: "j.foucher" <j.foucher@polymorph.fr>
Date: Wed, 18 Feb 2026 13:49:34 +0100
Subject: [PATCH] =?UTF-8?q?Calibration=20tool=20:=20lecture=20config=20XIA?=
 =?UTF-8?q?O=20au=20d=C3=A9marrage?=
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Lit la caractéristique configChar au démarrage de la connexion BLE
pour synchroniser les seuils Python avec les valeurs sauvegardées
en flash sur le XIAO (accel, gyro, audio).

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
---
 Python/Xiao_BLE_tools/xiao_calibration_tool.py | 13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)

diff --git a/Python/Xiao_BLE_tools/xiao_calibration_tool.py b/Python/Xiao_BLE_tools/xiao_calibration_tool.py
index 917017f..015a787 100644
--- a/Python/Xiao_BLE_tools/xiao_calibration_tool.py
+++ b/Python/Xiao_BLE_tools/xiao_calibration_tool.py
@@ -142,7 +142,18 @@ async def ble_loop():
                 await client.start_notify(DEBUG_CHAR_UUID, debug_callback)
                 await client.start_notify(SHOT_CHAR_UUID,  shot_callback)
                 ble_status = f"✅ {display_name}  ({addr})"
-                # À la connexion : envoyer config + activer debug FULL automatiquement
+                # À la connexion : lire la config sauvegardée dans le XIAO (flash)
+                try:
+                    raw = await client.read_gatt_char(CONFIG_CHAR_UUID)
+                    if len(raw) >= 22:
+                        vals = struct.unpack_from('<ffH', raw, 0)
+                        thresholds["accel"] = round(vals[0], 1)
+                        thresholds["gyro"]  = round(vals[1], 1)
+                        thresholds["audio"] = int(vals[2])
+                        print(f"📥 Config lue depuis XIAO → Accel:{thresholds['accel']:.1f}G  Gyro:{thresholds['gyro']:.0f}°/s  Audio:{thresholds['audio']}")
+                except Exception as ex:
+                    print(f"⚠️  Lecture config XIAO impossible: {ex}")
+                # Envoyer debug FULL (sans écraser les seuils du XIAO)
                 try:
                     payload = build_config_payload(include_debug=True)
                     await client.write_gatt_char(CONFIG_CHAR_UUID, payload, response=True)