I didn't use an external 32.768 crystal, the internal NRF_SDH_CLOCK_LF_SRC 0 I used。
NRF_SDH_CLOCK_LF_SRC 0
NRF_SDH_CLOCK_LF_RC_CTIV 16
NRF_SDH_CLOCK_LF_RC_TEMP_CTIV 2
NRF_SDH_CLOCK_LF_ACCURACY 1
When I don't start broadcasting, there is a 2 ms interval spike in current, as shown in the graph below
When I enable the broadcast its current is normal as shown in the figure below
