Softdevice assertion failed!

[razvan1t]

I am writing some code for a customer using the nrf52840.

The Softdevice asserts immediately after a call to nrf_fstorage_write().

The write address is OK, alignment is OK, size is multiple of 4. 

nrf_fstorage_erase() works perfectly. 

nrf_fstorage_write() returns success. I never get the callback. I get

app: SOFTDEVICE: ASSERTION FAILED

Looking for a fix.

Regards,

Raz

UPDATE: I just figured out that if I write 3600 bytes in one call to nrf_fstorage_write() it works. If I write 4096 it crashes. I should be able to write 4096 since I have this

#define NRF_FSTORAGE_SD_MAX_WRITE_SIZE 4096

[tesc]

Hi,

There seems to be an error with writing long chunks to flash using the SoftDevice API. Can you try reducing the NRF_FSTORAGE_SD_MAX_WRITE_SIZE value, at least down to 3600 (which you have confirmed to be working)?

When writing longer chunks of data than NRF_FSTORAGE_SD_MAX_WRITE_SIZE, nrf_fstorage_write() will divide it into shorter chunks and report back through the callback when all chunks are written.

Regards,
Terje