How to reset the nrf52840 dk board using software in zephyr i am using nrf mesh light sample code

RE: How to reset the nrf52840 dk board using software in zephyr i am using nrf mesh light sample code

Susheel Nuguru — Fri, 17 Oct 2025 22:24:13 GMT

[quote user=""]and if i give s v on command the slave is receving and led is turn on but no reply. can you say what is the root cause and how power disconnect and connect then this issue is fixed , what is the problem and how to solve it ?[/quote]

Since this is your main issue, you need to see which state the slave is. Since all the slave devices are also nRF54840 DK, debugging should not be an issue. Enable logs on those devices and add as much logs as you can to understand the state of the slave device.

Here it says that doing. a mesh reset will need you to reprovision the device into the network. I hope you are doing that?

RE: How to reset the nrf52840 dk board using software in zephyr i am using nrf mesh light sample code

sibi — Fri, 17 Oct 2025 08:06:51 GMT

i changed the reset function with delay but stil the issue come after 2nd reset

// reboot function

void factory_reset_work_handler(struct k_work *work)

{

print_uart("Factory reset started...\n");

// Reset Bluetooth Mesh provisioning

bt_mesh_reset();

k_sleep(K_MSEC(2000));

print_uart("Mesh provisioning reset\r\n");

// Delete all stored settings (flash/NVS)

int ret = settings_delete("");

k_sleep(K_MSEC(2000));

if (ret) {

print_uart("Failed to delete settings: %d\n", ret);

} else {

print_uart("All settings deleted.\n");

}

k_sleep(K_MSEC(2000));

print_uart("Rebooting device...\n");

//sys_reboot(SYS_REBOOT_COLD);

sys_reboot(SYS_REBOOT_WARM);

}

can you give sample code that reset the nrf mesh ?

RE: How to reset the nrf52840 dk board using software in zephyr i am using nrf mesh light sample code

Susheel Nuguru — Fri, 17 Oct 2025 07:53:51 GMT

Te problem might be that you are doing sys_reboot right after mesh reset and settings delete, not giving any time for any flash operations to complete if any.
try to make sure that settings is finished with all the activities and add a delay of 100 ms between that and system reset. Something like below

static void do_factory_reset(void)
{
    bt_mesh_reset();
    settings_delete("whatever you want to delete");

    settings_save();

    /* Small delay to allow flash backend to finish erase/write operations */
    k_sleep(K_MSEC(100));

    sys_reboot(SYS_REBOOT_COLD);
}