sd_flash_write only once

[Mohamed O.Abouzeid]

I'm attaching a function where I use the sd function :

    void edit_speed_ID(uint8_t speed)
    {		
uint32_t value;//, err_code;
value=5  * speed;
while(sd_flash_write(address,(uint32_t *) & value,1)==NRF_ERROR_BUSY);
nrf_delay_ms(1000);
pattern_ID_3();
     }

the problem is that, when I call this function for the first time, it works fine & if I try to call this function its call is done correctly but the sd_flash_write doesn't overwrite the written value for the first time even I don't change the address passed to the sd_flash_write

[Susheel Nuguru]

it does not work if you want to write to the same address second time. You must either clear the page using sd_flash_clear and write to it again, or you must use pstorage library and use the update function. Please not that there is no sd_flash_xx function to update, but pstorage is your friend in this case

[Mohamed O.Abouzeid]

how to use this functions? ?