修复不关机补充

hardware.py

@@ -29,7 +29,7 @@ class HardwareManager:
         self._adc_obj = None             # ADC对象
         self._at_client = None            # AT客户端
 
-        self._last_active_time = 0       # 用于记录用户的最后一次活跃的时间
+        self._last_active_ticks = None   # 上次活跃时刻（ticks_ms，单调递增，不受校时影响）
         self._stop_timer = False         # 用于停止定时器的标志
 
         self._initialized = True
@@ -111,7 +111,7 @@ class HardwareManager:
 
     def start_idle_timer(self):
         self._stop_timer = False
-        self._last_active_time = time.time()
+        self._last_active_ticks = time.ticks_ms()
 
     def stop_idle_timer(self):
         self._stop_timer = True
@@ -119,12 +119,13 @@ class HardwareManager:
     def get_idle_time_in_sec(self):
         if self._stop_timer:
             return 0
-        diff = time.time() - self._last_active_time
-        if diff < 0:
-            # 时间可能被重置了，重新计时
-            self._last_active_time = time.time()
+        if self._last_active_ticks is None:
             return 0
-        return diff
+        diff_ms = time.ticks_diff(time.ticks_ms(), self._last_active_ticks)
+        if diff_ms < 0:
+            self._last_active_ticks = time.ticks_ms()
+            return 0
+        return diff_ms / 1000.0
 
 
 # 创建全局单例实例