Function mpfs_hal_turn_ddr_selfrefresh_on 

pub unsafe extern "C" fn mpfs_hal_turn_ddr_selfrefresh_on()

//** The mpfs_hal_turn_ddr_selfrefresh_on(void) flushes cache and turns on self refresh. When DDR is in self refresh mode, less power is consumed by the memory. Data is retained. You can not write or read from the DDR when self-refresh is on.

@return none

Example: @code

mpfs_hal_turn_ddr_selfrefresh_on(DEFAULT_SEG_SETUP);

@endcode