When could I write the flash???

[jimlin]

Hi,

I know the flash operation, including earse and write, should be excuted when the radio is inactive. So, I put the flash earse and write operation into the function 'ble_flash_on_radio_active_evt' and only do it when the m_radio_active == false. Is it right? It always run to app_error_handler() once the ble_flash_page_erase() called, but when it called, the radio is inactve. Is the earse time too long to prevent the radio re-start? The SDK I used is 4.4.1 while the softdevice is 5.2.1, for the sample in hand could only run on this version.How could I do this correctly under these version?

Thanks.

[Ole Morten]

First, I'd strongly recommend you to upgrade to S110 version 6.0.0. For production you'll most likely end up getting second revision chips anyway, and for these S110 version 6.0.0 is the recommended solution. For development, you can also use 6.0.0 on your first revision chip, as long as you don't go into production with this combination. As explained here, there is (at least) one known assert with this combination.

Doing a flash erase will typically take 21 ms, as specified in the PS, so you need to make sure to do it at a time the softdevice won't need to run anything for (at least) that period. If the connection (or advertising) interval is short, it may not be possible to do while in a connection (or while advertising). In that case, the only time you can do it is while disconnected.

However, if you make sure that the connection (or advertising) interval is long, there should be sufficient time to do it right after a radio event, as you say you do now. If you can't get this working, can you please upload the compelte source code your working with, so I can take a look?

[jimlin]

Thanks again for your great help :)