nrf52832, SDK 15.3
The average current consumption is 9.53uA in my system with SPIM. After I init another SPIS, the current consumption goes up to 478uA. CS pin keeps high. From product specification, it only consume 1uA. Do I miss something?
You missed the running HF clock.
In order to meet the CS to CLK timing of 1µs, the high frequency clock (HFINT or HFCLK) must be kept running once SPIS was enabled.