Reset the board removing the firmware. and all data.

[cyriactoms]

Hi 

I am using nrf52840 in my custom board. I have a gpio button which is assigned for as a factory reset button. So when i press the button the whole board needs toi be reseted removing firmware , data , configuration. How is that possible.

[Sigurd]

If you want to trigger a erase-all from FW:

NRF_NVMC->CONFIG = NVMC_CONFIG_WEN_Een;
NRF_NVMC->ERASEALL = NVMC_ERASEALL_ERASEALL_Erase;

See this page for more info:https://docs.nordicsemi.com/bundle/ps_nrf52840/page/nvmc.html#ariaid-title6

[cyriactoms]

Hi, 

Thank you for the reply

what does the function bt_mesh_reset();  do.

when i try to reset with the function i got an error

ASSERTION FAIL [err == 0] @ WEST_TOPDIR/zephyr/subsys/bluetooth/host/hci_core.c:331
command opcode 0x2042 timeout with err -11
[00:00:28.807,586] <err> os: r0/a1: 0x00000003 r1/a2: 0x00000000 r2/a3: 0x00000002
[00:00:28.807,617] <err> os: r3/a4: 0x20003038 r12/ip: 0x00000010 r14/lr: 0x00023585
[00:00:28.807,617] <err> os: xpsr: 0x41000016
[00:00:28.807,617] <err> os: Faulting instruction address (r15/pc): 0x00023590
[00:00:28.807,647] <err> os: >>> ZEPHYR FATAL ERROR 3: Kernel oops on CPU 0
[00:00:28.807,678] <err> os: Fault during interrupt handling

[00:00:28.807,708] <err> os: Current thread: 0x200057e0 (idle)
[00:00:28.918,579] <err> fatal_error: Resetting system

[Sigurd]

Please open a new case for this new question.