-
-int sd_readSingleBlock(Sd *sd, size_t index, void *_buf, size_t len);
+void sd_setHightSpeed(Sd *sd);
+int sd_readSingleBlock(Sd *sd, size_t index, uint32_t *buf, size_t words);
+int sd_writeSingleBlock(Sd *sd, size_t index, uint32_t *buf, size_t words);