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关于RTC芯片BQ32000DR的上电读取问题



底层驱动已经写好,读写正常,备用的3.0V供电也有。现在出现的问题是偶尔掉电上电,读取到的RTC时间为掉电的时间,需要再读一次才是目前的真实时间,所以来请教下是不是少配置了什么寄存器。