Wasting nRF51 Flash memory erase cycles

[Mihail]

Hi, In pstorage.c, function uint32_t pstorage_init(void), there a call to sd_flash_page_erase (line 846):

 // Erase swap region in case it is dirty.
  retval = sd_flash_page_erase(PSTORAGE_SWAP_ADDR / PSTORAGE_FLASH_PAGE_SIZE);

Call to pstorage_init is made every time, processor is restarted (in case we use pstorage). Having in mind that according to Table 16 in the Product Specification which gives an endurance of 20,000 minimum write/erase cycles, is such a call wasting of resources or not?

[Stefan Birnir Sverrisson]

Hi

Thank you for your feedback. Your observation is valid. The flash swap page seems to be erased on every start-up of the chip, which in my opinion could be done better. I have suggested your fix to the SDK team.