what will be the starting address of pstorage page how we can change it?

Question

i want to use this thing to store the data of 24bytes.

Petter Myhre · Accepted Answer

PSTORAGE_DATA_START_ADDR is set in pstorage_platform.h. 
 It will use the flash pages at the end if there is nothing there, like a bootloader, then it will use flash pages beneath it. It requires one swap page in addition to the pages you require. 
 #define PSTORAGE_DATA_START_ADDR ((PSTORAGE_FLASH_PAGE_END - PSTORAGE_NUM_OF_PAGES - 1) \
 * PSTORAGE_FLASH_PAGE_SIZE)
 
 PSTORAGE_FLASH_PAGE_END will normally be 256 pages. The total size of flash is 256 * 0x400 = 0x40000. 
 PSTORAGE_NUM_OF_PAGES you set according to your requirements. 
 PSTORAGE_FLASH_PAGE_SIZE is 0x400 (1024). 
 -1 is the swap page. 
 Even though you only want to store 24 bytes pstorage requires a whole flash page, this is just how flash works. 
 So with one page you get ((256 - 1 - 1) * (0x400)) = 0x3F800

what will be the starting address of pstorage page how we can change it?

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