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The ECSD_LowLevel_IsCardPresent function checks if a card is inserted into the SD Card holder.
BOOL ECSD_LowLevel_IsCardPresent(void);
Return value
TRUE if a card is detected in the slot, FALSE if not.
If you are communicating with an SD Card that is fixed to the system, always return TRUE. Note: You should never call this function directly. The API documentation is present to allow you to write your own low level driver optimized for your hardware.