Based on my understanding on SPI signal, CS/SS pin need to pull down to low when read/write and pull up high when the action is finished.
May I know if this feature has already written in spi_transceive_dt() or if I can check it from anywhere
Because when I see from https://academy.nordicsemi.com/courses/nrf-connect-sdk-intermediate/lessons/lesson-5-serial-peripheral-interface-spi/topic/exercise-1-10/
It does not have an additional code which pull down/up the SS pin
github.com/.../main.c
