40 lines
1.4 KiB
Python
40 lines
1.4 KiB
Python
import serial
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import time
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# UART配置
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uart_port = '/dev/ttyS5' # UART端口路径
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baud_rate = 115200 # 波特率
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try:
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# 初始化串口连接
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ser = serial.Serial(uart_port, baud_rate, timeout=1)
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print("UART初始化成功，开始读取数据...")
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while True:
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# 尝试读取一行数据
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ori_data = ser.readline() # 读取一行原始数据
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print(f"原始数据: {ori_data}")
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data = ori_data.decode('utf-8').strip() # 读取一行并解码
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print(f"解码后数据: {data}, 类型: {type(data)}")
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if data: # 如果读取到数据
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try:
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num = int(data) # 尝试将读取的数据转换为整数
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print(f"接收到的数字: {num}")
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# print(f"接收到的字符串: {data}")
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battery_level = num / 4096 * 4.8 /4.2 * 100 # 计算电池电量
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print(f"电池电量: {battery_level}%")
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except ValueError: # 如果转换失败，说明不是有效的数字
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print("接收到的数据无法转换为数字")
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time.sleep(1) # 每隔一秒检查一次新数据
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except KeyboardInterrupt:
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print("程序被中断，正在关闭UART连接...")
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ser.close()
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print("UART连接已关闭。")
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except Exception as e:
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print(f"发生错误: {e}")
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if 'ser' in locals():
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ser.close() |