UM1635 datasheet(19/42 Pages) STMICROELECTRONICS

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UM1635

API specification

Arguments

Return values

Troubleshooting

Comments

None.

Assumptions

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

Table 21. Arguments for CheckSum()

Argument

Description

Range

pSSDConfig

Pointer to the SSD

Configuration Structure.

The values in this structure are chip-dependent. Please

refer to Section 2.3 for more details.

Dest

Destination address to be

summed in Flash memory.

Any accessible address aligned on double word boundary

in either main array or shadow row.

Size

Size, in bytes, of the Flash

region to check sum.

If size is 0 and the other parameters are all valid,

C90FL_OK is returned. Its combination with dest should

fall within either main array or shadow row.

pSum

Returns the sum value.

0x00000000 - 0xFFFFFFFF. Note that this value is only

valid when the function returns C90FL_OK.

CallBack

Address of void call back

function pointer.

Any addressable void function address. To disable it use

NULL_CALLBACK macro.

Table 22. Return values for CheckSum()

Type

Description

Possible values

UINT32

Successful completion or error value.

C90FL_OK

C90FL_ERROR_ALIGNMENT

C90FL_ERROR_RANGE

Table 23. Troubleshooting for CheckSum()

Returned Error Bits

Description

Solution

C90FL_ERROR_ALIGNMENT

This error indicates that

dest/size 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

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