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import serial
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import struct
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# 定义电池状态常量
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BATSTATE_CHARGE_COMPLETE = 0x01
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BATSTATE_CHARGE_NOW = 0x02
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BATSTATE_CHARGE_LEARN = 0x10
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BATSTATE_DISCHAR_NOW = 0x04
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# 定义TagResult结构体对应的Python类
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class TagResult:
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def __init__(self, data):
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fmt = '<hhiHHBB4x' # 小端序（little-endian），对应INT16、INT16、INT16、UINT16、UINT16、UINT8、UINT8和4个字节的预留空间
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temp, current, volt, remaintime, capacity, cappercent, state, *_ = struct.unpack(fmt, data)
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self.temp = temp / 10 if temp > -3276.8 else float('nan') # 假设温度值需要除以10得到实际℃数
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self.current = current # mA
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self.volt = volt # mV
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self.remaintime = remaintime # 分钟
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self.capacity = capacity # mAH
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self.cappercent = cappercent # 百分比%
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self.state = state # 充放电状态
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@property
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def chargingStatus(self):
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statusString = ""
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if self.state & BATSTATE_DISCHAR_NOW:
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statusString = f"剩余使用时间约:{self.remaintime}分钟"
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if self.state & BATSTATE_CHARGE_LEARN:
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statusString += "，现在插入充电器可执行充电校准"
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elif (self.state & BATSTATE_CHARGE_NOW) or (self.state & BATSTATE_CHARGE_COMPLETE):
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if self.state & BATSTATE_CHARGE_NOW:
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statusString = "充电中"
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else:
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statusString = "充电完成"
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if self.state & BATSTATE_CHARGE_LEARN:
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statusString += "，正在执行充电校准"
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return statusString
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class BatteryManange():
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def __init__(self):
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self.port = 'COM2' # 替换为实际的串口号
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self.baudRate = 9600
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try:
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self.ser = serial.Serial(self.port, self.baudRate)
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except:
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pass
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def readBatteryInfo(self):
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command = b'\xAA\xFF\x55\xFF\x01\x80\xAA\xEE\x55\xEE'
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self.ser.write(command)
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response = self.ser.read(26)
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# 检查包头和包尾是否正确
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if not (response.startswith(b'\xAA\xFF\x55\xFF') and response.endswith(b'\xAA\xEE\x55\xEE')):
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raise ValueError("无效的包头或包尾")
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contentData = response[4:22]
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# 创建TagResult对象并解析电池信息
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result = TagResult(contentData)
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# print(result.chargingStatus)
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return result
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def close(self):
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pass
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# self.ser.close()
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