UM10462 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2016. All rights reserved.
User manual Rev. 5.5 — 21 December 2016 219 of 523
NXP Semiconductors
UM10462
Chapter 10: LPC11U3x/2x/1x USB on-chip drivers
MSC_Verify
ErrorCode_t(* USBD_MSC_INIT_PARAM::MSC_Verify)(uint32_t offset, uint8_t buf[], uint32_t length)
MSC Verify callback function.
This function is provided by the application software. This function gets called when host
sends a verify command. The callback function should compare the buffer with the
destination memory at the requested offset and
Parameters:
1. offset = Destination start address.
2. buf = Buffer containing the data sent by the host.
3. length = Number of bytes to verify.
Returns:
Returns ErrorCode_t type to indicate success or error condition.
Return values:
1. LPC_OK = If data in the buffer matches the data at destination
2. ERR_FAILED = At least one byte is different.
MSC_GetWriteBuf
void(*void(* USBD_MSC_INIT_PARAM::MSC_GetWriteBuf)(uint32_t offset, uint8_t **buff_adr, uint32_t
length))(uint32_t offset, uint8_t **buff_adr, uint32_t length)
Optional callback function to optimize MSC_Write buffer transfer.
This function is provided by the application software. This function gets called when host
sends SCSI_WRITE10/SCSI_WRITE12 command. The callback function should update the
Parameters:
1. offset = Destination start address.
2. buf = Buffer containing the data sent by the host.
3. length = Number of bytes to write.
Returns:
Nothing.
Table 210. USBD_MSC_INIT_PARAM class structure
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