NRF58122 using SPI with softdevice cannot sleep

Question

I have a code using S110 with nrf51822 
 And I have a timer to trigger a SPI master get some data from module 
 It successful get the data from module (SPI) but the nrf51822 continuous costing around 5mA. (seem not sleep) 
 If I disable the SPI part, it be come normal. 
 Am i need to disable SPI while not in use? and How?

John · Accepted Answer

Yes, the SPI requires the high frequency clock and therefore will burn power even when not in use but enabled. I am using the nrf_drv_spi_uninit function in my SPI driver. But you could probably call nrf_spi_disable yourself, or even access the peripheral register directly using 
 p_spi->ENABLE = (SPI_ENABLE_ENABLE_Disabled << SPI_ENABLE_ENABLE_Pos);

NRF58122 using SPI with softdevice cannot sleep

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