I'm using a K22FN512xxx12 device (FTFA flash controller) and I am trying to make sense of the "number" parameter in the FlashVerifySection(config, dest, number, margin, commandSeq) function. The description for the parameter in the C90TFS/FTFx Driver User Manual states: "Number of alignment unit to be verified. Refer to corresponding reference manual to get correct information of alignment constrain." [sic]
Searching through the reference manual I am not able to find the relevant information (I have no idea what I am looking for). What I do know for my K22 device:
Flash size: 512 KB
Block size: 256 KB
Sector size: 2048 B
Program size: 4 B
The example application (For a K64 device) has the following code:
/* Verify section for several sector of PFLASH */
number = FTFx_PSECTOR_SIZE/FSL_FEATURE_FLASH_PFLASH_SECTION_CMD_ADDRESS_ALIGMENT;
for(margin_read_level = 0; margin_read_level < 0x2; margin_read_level++)
ret = FlashVerifySection(&flashSSDConfig, destination, number, margin_read_level, g_FlashLaunchCommand);
if (FTFx_OK != ret)
Where 'FTFx_PSECTOR_SIZE' = 4096 (for the example K64 project) and 'FSL_FEATURE_FLASH_PFLASH_SECTION_CMD_ADDRESS_ALIGMENT' = 16 (for the example K64 project). This means number = 256 (for the example K64 project) which ... doesn't make any sense to me.
How am I supposed to calculate the number parameter for my device (MK22FN512xxx12) and what is its meaning / purpose?
Thanks for any help!