52810 coudl't write data to flash using fstorage

RE: 52810 coudl't write data to flash using fstorage

Kenneth — Tue, 22 May 2018 09:37:05 GMT

After the erase function, can you check that the data are all FFFF... in the page you have erased? I was thinking possible that you somehow don't erase the page you expect. You could add a debug output before calling sd_flash_page_erase() to make sure that the page_number is as you expect. Also take a look at \nRF5_SDK_15.0.0_a53641a\examples\peripheral\flash_fstorage if you haven't already.

RE: 52810 coudl't write data to flash using fstorage

Alice — Thu, 17 May 2018 03:43:22 GMT

Hi Kenneth,

Yes, I know it need to take several hundred ms to execute the flash operation.

Now I set erase_finish = false; before I call nrf_fstorage_erase, then wait it erase finish:

while(!erase_finish);

printf("Clear OK\r\n");

The erase_finish would be set to true in the NRF_FSTORAGE_EVT_ERASE_RESULT event in the callback function fs_evt_handler . It has printed Clear OK debug information.I do erase and write flash in the main function.

However, it still couldn't write data successfully. Is there anywhere wrong?

RE: 52810 coudl't write data to flash using fstorage

Kenneth — Wed, 16 May 2018 19:13:30 GMT

Hi, if you are using the softdevice api to write and erase flash, then it may take several hundred ms to execute the flash operation, because the softdevice need to schedule the flash operation. So for instance after calling a flash erase operation you need to wait for flash operation success event before the flash erase operation is complete, see description here:

http://infocenter.nordicsemi.com/topic/com.nordic.infocenter.s132.api.v5.0.0/group___n_r_f___s_o_c___f_u_n_c_t_i_o_n_s.html?cp=2_3_1_1_1_2_7_2_7#ga9c93dd94a138ad8b5ed3693ea38ffb3e