refine the code to different part

hardware.py

@@ -0,0 +1,119 @@
+#!/usr/bin/env python3
+# -*- coding: utf-8 -*-
+"""
+硬件管理器模块
+提供硬件对象的统一管理和访问
+"""
+import threading
+import config
+from at_client import ATClient
+
+
+class HardwareManager:
+    """硬件管理器（单例）"""
+    _instance = None
+    
+    def __new__(cls):
+        if cls._instance is None:
+            cls._instance = super(HardwareManager, cls).__new__(cls)
+            cls._instance._initialized = False
+        return cls._instance
+    
+    def __init__(self):
+        if self._initialized:
+            return
+        
+        # 私有硬件对象
+        self._uart4g = None              # 4G模块UART
+        self._distance_serial = None     # 激光测距串口
+        self._bus = None                 # I2C总线
+        self._adc_obj = None             # ADC对象
+        self._at_client = None            # AT客户端
+        
+        self._initialized = True
+    
+    # ==================== 硬件访问（只读属性）====================
+    
+    @property
+    def uart4g(self):
+        """4G模块UART（只读）"""
+        return self._uart4g
+    
+    @property
+    def distance_serial(self):
+        """激光测距串口（只读）"""
+        return self._distance_serial
+    
+    @property
+    def bus(self):
+        """I2C总线（只读）"""
+        return self._bus
+    
+    @property
+    def adc_obj(self):
+        """ADC对象（只读）"""
+        return self._adc_obj
+    
+    @property
+    def at_client(self):
+        """AT客户端（只读）"""
+        return self._at_client
+    
+    # ==================== 初始化方法 ====================
+    
+    def init_uart4g(self, device=None, baudrate=None):
+        """初始化4G模块UART"""
+        from maix import uart
+        if device is None:
+            device = config.UART4G_DEVICE
+        if baudrate is None:
+            baudrate = config.UART4G_BAUDRATE
+        self._uart4g = uart.UART(device, baudrate)
+        return self._uart4g
+    
+    def init_distance_serial(self, device=None, baudrate=None):
+        """初始化激光测距串口（激光控制）"""
+        from maix import uart
+        if device is None:
+            device = config.DISTANCE_SERIAL_DEVICE
+        if baudrate is None:
+            baudrate = config.DISTANCE_SERIAL_BAUDRATE
+        
+        print(f"[HW] 初始化激光串口: device={device}, baudrate={baudrate}")
+        self._distance_serial = uart.UART(device, baudrate)
+        print(f"[HW] 激光串口初始化完成: {self._distance_serial}")
+        return self._distance_serial
+    
+    def init_bus(self, bus_num=None):
+        """初始化I2C总线"""
+        from maix import i2c
+        if bus_num is None:
+            bus_num = config.I2C_BUS_NUM
+        self._bus = i2c.I2C(bus_num, i2c.Mode.MASTER)
+        return self._bus
+    
+    def init_adc(self, channel=None, res_bit=None):
+        """初始化ADC"""
+        from maix.peripheral import adc
+        if channel is None:
+            channel = config.ADC_CHANNEL
+        if res_bit is None:
+            res_bit = adc.RES_BIT_12
+        self._adc_obj = adc.ADC(channel, res_bit)
+        return self._adc_obj
+    
+    def init_at_client(self, uart_obj=None):
+        """初始化AT客户端"""
+        if uart_obj is None:
+            if self._uart4g is None:
+                raise ValueError("uart4g must be initialized before at_client")
+            uart_obj = self._uart4g
+        self._at_client = ATClient(uart_obj)
+        self._at_client.start()
+        return self._at_client
+
+
+# 创建全局单例实例
+hardware_manager = HardwareManager()
+
+