134 lines
3.8 KiB
Python
134 lines
3.8 KiB
Python
#!/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
|
||
"""
|
||
from maix import time
|
||
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._bus = None # I2C总线
|
||
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._stop_timer = False # 用于停止定时器的标志
|
||
|
||
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 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_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
|
||
|
||
def power_off(self):
|
||
"""关闭电源板"""
|
||
try:
|
||
# 物理引脚是 A24，对应 GPIO 功能是 GPIOA24
|
||
# 注意：这里需要先在 config.PIN_MAPPINGS 中配置好 "A24": "GPIOA24"
|
||
from maix import gpio
|
||
# 输出高电平关闭
|
||
gpio.GPIO("GPIOA24", gpio.Mode.OUT).value(1)
|
||
except Exception as e:
|
||
print(f"关机失败: {e}")
|
||
|
||
def start_idle_timer(self):
|
||
self._stop_timer = False
|
||
self._last_active_time = time.time()
|
||
|
||
def stop_idle_timer(self):
|
||
self._stop_timer = True
|
||
|
||
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()
|
||
return 0
|
||
return diff
|
||
|
||
|
||
# 创建全局单例实例
|
||
hardware_manager = HardwareManager()
|
||
|
||
|