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UM1620

API specification

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));

Arguments

Return values

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

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