ADE9000 考虑Fast RMS½ 采集数据，提高响应速度。但目前读到的AIRMSONE为0。 读取AIRMS是可以读取数据的。请帮看下是否需要设置哪些寄存器参数才可读取？
手册里面提到的寄存器有尝试设置，但无果：
Fast RMS½ Measurement
RMS½ is an rms measurement performed over one line cycle,
updated every half cycle. This measurement is provided for
voltage and current on all phases plus the neutral current. All
the half cycle rms measurements are performed over the same
time interval and update at the same time, as indicated by the
RMSONERDY bit in the STATUS0 register. The results are
stored in the AIRMSONE, BIRMSONE, CIRMSONE,
NIRMSONE, AVRMSONE, BVRMSONE, and CVRMSONE
registers. The xRMSONE register reading with full-scale inputs
is 52,702,092d.
It is recommended to select the data before the high-pass filter
for the fast rms measurement by setting the RMS_SRC_SEL bit
in the CONFIG0 register.
The LP_SEL bits in the ZX_LP_SEL register select which line
period measurement sets the number of samples used in the
rms½ measurement. Alternatively, set the UPERIOD_SEL bit in
the CONFIG2 register to set desired period in the USER_PERIOD
register for line period measurement. An offset correction
register is available for improved performance with small input
signal levels, xRMSONEOS.
