Once written, you can not write it for the second time. It will not cause an error, but is there any way?
Write the source code below.
NRF_FSTORAGE_DEF (nrf_fstorage_t fstorage) =
{
/ * Set a handler for fstorage events. * /
.evt_handler = fstorage_evt_handler,
/ * These below are the boundaries of the flash space assigned to this instance of fstorage.
* You must set these manually, even at runtime, before nrf_fstorage_init () is called.
* The function nrf5_flash_end_addr_get () can be used to retrieve the last address on the
* last page of flash available to write data. * /
.start_addr = 0x76000,
.end_addr = 0x76 FFF,
};
#define GSM_APN_SETTING_SIZE 0x40
#define GSM_APN_SETTING_OFFSET 0x11
flash_update (gsm_apn_config, GSM_APN_SETTING_SIZE, GSM_APN_SETTING_OFFSET, true);
}
void flash_update (const uint8_t * p_dest, uint32_t size, uint32_t offset, bool isString)
{
ret_code_t rc;
rc = nrf_fstorage_write (& fstorage, fstorage.start_addr + offset, p_dest, size, NULL);
APP_ERROR_CHECK (rc);
}
