RE: SPI current consumption.

control — Wed, 19 Aug 2020 06:42:30 GMT

thanks for the fast response. I added in my project (in which SDK 10 is used) the library nrf_drv_spi from SKD 11 and the functions enable and disable of SPI communication works like a charm. It seems that SDK 10 has some bugs regarding SPI communication which reflects in higher current consumption.

RE: SPI current consumption.

Kenneth — Tue, 18 Aug 2020 11:58:08 GMT

Hi,

Can you try to uninit the SPI and then write 0 followed by 1 to the POWER register (address 0xFFC)?

Make sure the SPI is uninit (disabled) when doing this:

If TWI0 or SPI0 is used:
*(volatile uint32_t *)0x40003FFC = 0;
*(volatile uint32_t *)0x40003FFC;
*(volatile uint32_t *)0x40003FFC = 1;

If TWI1 or SPI1 is used:
*(volatile uint32_t *)0x40004FFC = 0;
*(volatile uint32_t *)0x40004FFC;
*(volatile uint32_t *)0x40004FFC = 1;

This should confirm if it's the SPI that is the problem, or if there is another mode or peripheral that is causing the current consumption.

Kenneth