USBD_StorageRd

Description

Read data from the storage medium.

Files

usbd_storage.h / usbd_storage.c

Prototype

void  USBD_StorageRd (USBD_STORAGE_LUN  *p_storage_lun,
                      CPU_INT32U         blk_addr,
                      CPU_INT32U         nbr_blks,
                      CPU_INT08U        *p_data_buf,
                      USBD_ERR          *p_err);

Arguments

p_storage_lun

Pointer to the logical unit storage structure.

blk_addr

Logical Block Address (LBA) of read block start.

nbr_blks

Number of logical blocks to read.

p_data_buf

Pointer to buffer in which data will be stored.

p_err

Pointer to variable that will receive the return error code from this function.

USBD_ERR_NONE

USBD_ERR_SCSI_MEDIUM_NOT_PRESENT

Returned Value

None.

Callers

Mass Storage Class.

Notes / Warnings

None.