UM1635 datasheet(31/42 Pages) STMICROELECTRONICS

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UM1635

API specification

Troubleshooting

The trouble shooting given here comprises of hardware errors and input parameter error.

Comments

The inputs lowEnabledBlocks, midEnabledBlocks and highEnabledBlocks are bit-mapped

arguments that are used to select the blocks to be evaluated in the Low/Mid/High address

spaces of main array. The selection of the blocks of the main array is determined by

setting/clearing the corresponding bit in lowEnabledBlocks, midEnabledBlocks or

highEnabledBlocks.

The bit allocations for blocks in one address space are: bit 0 is assigned to block 0, bit 1 to

block 1, etc. The following diagrams show the formats of lowEnabledBlocks,

midEnabledBlocks and highEnabledBlocks for the C90FL2 module.

For low address space valid bits are from bit 0 to bit (lowBlockNum – 1). In which,

lowBlockNum is the number of low blocks returned from FlashInit();

For middle address space valid bits are from bit 0 and bit (midBlockNum – 1). In which,

midBlockNum is the number of middle blocks returned from FlashInit();

For high address space valid bits are from bit 0 to bit (highBlockNum – 1). In which,

highBlockNum is the number of high blocks returned from FlashInit();

For example, below are bit allocations for blocks in Low/Mid/High Address Space of

SPC56ELx:

Bit Allocation for Blocks in Low Address Space:

Table 47. Troubleshooting for FlashArrayIntegrityCheck()

Returned error bits

Possible causes

Solution

C90FL_ERROR_AIC_MISMATCH

The MISR value calculated by the user

is incorrect.

Re-calculate the MISR values using

the correct Data and addrSeq.

The MISR calculated by the Hardware

is incorrect.

Hardware Error.

C90FL_ERROR_AIC_NO_BLOCK

None of the Blocks are enabled for

Array Integrity Check

Enable any of the blocks using

variables lowEnabledBlocks,

midEnabledBlocks and

highEnabledBlock.

Table 48. Bit allocation for blocks in low address space

MSB

LSB

bit 31

…

bit 10

bit 9

bit 8

…

bit 1

bit 0

reserved

…

reserved

block 9

block 8

…

block 1

block 0

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