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BQSTUDIO软件用IIC接口读取寄存器的值不对？

user4429053
Intellectual 810 points
Other Parts Discussed in Thread: BQ34Z100EVM

如图，在软件界面上用IIC读取08寄存器中的电压信息，结果各种现象，有不成功的，有返回1F FF的，也有返回7FFF的，  值怎么都不对呢？

  • 0
    TI__Guru*** 130456 points

    按照bq34z100EVM Wide Range Impedance Track Enabled Battery Fuel Gauge 文件上举的例子在读一次试试， 

    Read SBData Voltage (0x08)
    – Start Register = 0x08
    – Number of Bytes to Read = 2
    – Press the Read button
    – Date returned =8C 3C, which a byte swapped
    – 0x3C8C = 15500mV, when converted to decimal

    如果读出来还是不对，看一下电池的registers页面是否正常或者电池的I2C通讯是否正常。