UM1635 datasheet(18/42 Pages) STMICROELECTRONICS

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API specification

UM1635

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DocID024604 Rev 2

Return values

Troubleshooting

Comments

The contents pointed by pFailLoc, pFailData and pFailSource are updated only when there

is a mismatch between the source and destination regions.

Assumptions

It assumes that the Flash block is initialized using the ‘FlashInit()’ API.

2.6.6

CheckSum()

Description

This function performs a 32-bit sum over the specified Flash memory range without carry,

which provides a rapid method for checking data integrity.

Prototype

UINT32 CheckSum (PSSD_CONFIG pSSDConfig,

UINT32 dest,

UINT32 size,

UINT32 *pSum,

void (*CallBack)(void));

Table 19. Return values for ProgramVerify()

Type

Description

Possible values

UINT32

Successful completion or error value.

C90FL_OK

C90FL_ERROR_ALIGNMENT

C90FL_ERROR_RANGE

C90FL_ERROR_VERIFY

Table 20. Troubleshooting for ProgramVerify()

Returned error bits

Description

Solution

C90FL_ERROR_ALIGNMENT

This error indicates that

dest/size/source isn’t properly

aligned

Check if dest and size are aligned on double

word (64-bit) boundary. Check if source is

aligned on word boundary

C90FL_ERROR_RANGE

The area specified by dest and

size is out of the valid C90FL2

address range.

Check dest and dest+size, both should fall in

the same C90FL2 address ranges, i.e. both in

main array or both in shadow row

C90FL_ERROR_VERIFY

The content in C90FL2 and

source data mismatch.

Check the correct source and destination

addresses, erase the block and reprogram

data into Flash.

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