nRF52832 SPIM consume large current

[larry]

hi, i use SPIM0 transfer data, stoping SPIM0 and then disabling SPIM0 when the data is transfed,but the device consume current is 500uA, if i use SPI0 transfer data,call nrf_spi_disable(NRF_SPI0) when the data is transfed,the current is 50uA,so i think that the device SPIM0 consume current is 450uA when stoping SPIM0 and then disabling SPIM0, the current is very large.

stoping SPIM0 and then disabling SPIM0 by call the function in the following

void LCD_SPIM0_CONFIG_UNINIT(void) { nrf_spim_task_trigger(NRF_SPIM0,NRF_SPIM_TASK_STOP); nrf_spim_disable(NRF_SPIM0); }

the chip is nRF52832 , softdevice is s132_nrf52_2.0.1, SDK11.0

How to reduce power consumption when i do not need to use SPIM0 ?

best regards!

[MartinBL]

Hi,

Are you using GPIOTE by any chance? It could be related to this errata: [89] TWI: Static 400 µA current while using GPIOTE. The errata claims to only affect the TWI, but it is in fact also affecting the SPI. If you decide to try the workaround you should change the base addresses suggested in the workaround to the base address of the SPI instance you are using.