I have an issue with waking up SPI communication after sleep.
Befor I go to sleep I'm disabling SPI communication:
NRF_SPI0->ENABLE = 0;
NRF_SPI1->ENABLE = 0;
Handler function triggered by timer (which is responsible for wake-up) enabling SPI:
NRF_SPI0->ENABLE = 1;
NRF_SPI1->ENABLE = 1;
and send/receive data
err_code = nrf_drv_spi_transfer....
I'm getting err_code = 17 (NRF_ERROR_BUSY?) which causing reset.
When I remove commands:
NRF_SPI0->ENABLE = 0;
NRF_SPI1->ENABLE = 0;
NRF_SPI0->ENABLE = 1;
NRF_SPI1->ENABLE = 1;
SPI communication works fine, but current consumption is higher then expected during sleep
Should I disable SPI in different way?
Regards, Marcin