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bq76PL455采集电压跳动问题

大家好,我在用bq76PL455采集电压的时候,前边基础功能配置好之后,先发采样命令WriteReg(0, 2, 0x00, 1, FRMWRT_SGL_NR); 隔100ms后再发读取采样值命令WriteReg(0, 2, 0x20, 1, FRMWRT_SGL_R);可是读回来的电压不是很稳定,有时突然就跳动30mV左右,加了滤波之后还是有这问题,请问这个问题要怎样才能避免,请大神指教,项目比较急。